(Loss) Income before income tax and share of income on equity method investments

(5,765)

146,915

13,419

(25,415)

Income tax expense

(5,136)

(92)

(Loss) Income before share of income on equity method investments

141,779

13,327

(25,415)

Share of income on equity method investments

3,471

370

Net (loss) income attributable to Momo Inc.

145,250

13,697

(25,415)

Deemed dividend to preferred shareholders

(57,663)

Net (loss) income attributable to ordinary shareholders

$ 145,250

$ 13,697

$ (83,078)

Net (loss) income per share attributable to ordinary shareholders

Basic

$ 0.38

$ 0.04

$ (0.97)

Diluted

$ 0.36

$ 0.03

$ (0.97)

Weighted average shares used in calculating net (loss) income per ordinary share

Basic

377,335,923

342,646,282

85,293,775

Diluted

407,041,165

^[1]

401,396,548

^[2]

85,293,775

[1]	For the year 2016, an incremental weighted average number of 7,155,060 nonvested restricted shares and an incremental weighted average number of 22,550,182 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included
[2]	For the year 2015, an incremental weighted average number of 35,759,066 nonvested restricted shares and an incremental weighted average number of 22,991,200 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included.

Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based compensation	$ 31,706	$ 17,382	$ 6,638
Cost Of Revenues [Member]
Share-based compensation	2,785	915	155
Research And Development [Member]
Share-based compensation	5,646	3,502	674
Sales And Marketing [Member]
Share-based compensation	5,880	3,780	736
General And Administrative [Member]
Share-based compensation	$ 17,395	$ 9,185	$ 5,073

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net (loss) income attributable to Momo Inc.	$ 145,250	$ 13,697	$ (25,415)
Other comprehensive loss, net of tax:
Foreign currency translation adjustment	(11,642)	(3,499)	(1,185)
Comprehensive (loss) income attributable to Momo Inc.	$ 133,608	$ 10,198	$ (26,600)

Consolidated Statements of Changes in (Deficit) Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Subscription Receivable [Member]	(Accumulated Deficit)/ Retained Earning [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2013	$ (22,860)	$ 15	$ 1,710		$ (15)	$ (24,728)	$ 158
Balance, Shares at Dec. 31, 2013		147,000,000
Net Income (loss)	(25,415)					(25,415)
Share-based compensation	6,638		6,638
Repurchase of ordinary shares	(64,494)			$ (64,494)
Repurchase of ordinary shares, Shares		(15,651,589)
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units	286,651	$ 5	286,646
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units		45,688,888
Conversion of participating convertible redeemable preferred shares to ordinary shares	318,704	$ 20	318,684
Conversion of participating convertible redeemable preferred shares to ordinary shares, Shares		200,718,811
Deemed dividend to preferred shareholders	(57,663)					(57,663)
Subscription Receivable	15				$ 15
Foreign currency translation adjustment	(1,185)						(1,185)
Balance at Dec. 31, 2014	440,391	$ 40	613,678	(64,494)		(107,806)	(1,027)
Balance, Shares at Dec. 31, 2014		377,756,110
Net Income (loss)	13,697					13,697
Share-based compensation	17,382		17,382
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units	$ 415	$ 1	414
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units	5,995,293	5,995,293
Foreign currency translation adjustment	$ (3,499)						(3,499)
Balance at Dec. 31, 2015	468,386	$ 41	631,474	(64,494)		(94,109)	(4,526)
Balance, Shares at Dec. 31, 2015		383,751,403
Net Income (loss)	145,250					145,250
Share-based compensation	31,706		31,706
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units	$ 319	$ 1	318
Issuance of ordinary shares in connection with exercise of options and vesting of restricted share units	5,197,032	5,197,032
Foreign currency translation adjustment	$ (11,642)						(11,642)
Balance at Dec. 31, 2016	$ 634,019	$ 42	$ 663,498	$ (64,494)		$ 51,141	$ (16,168)
Balance, Shares at Dec. 31, 2016		388,948,435

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net (loss) income	$ 145,250	$ 13,697	$ (25,415)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities
Depreciation of property and equipment	8,404	6,646	2,805
Share-based compensation	31,706	17,382	6,638
Share of income on equity method investments	(3,471)	(370)
Impairment loss on long-term investments	5,765
Loss on disposal of property and equipment	15	5	64
Changes in operating assets and liabilities
Accounts receivable	(22,978)	(8,538)	(5,205)
Prepaid expenses and other current assets	(15,634)	(11,247)	(7,489)
Amount due from related parties	1,037	(1,218)	198
Rental deposits	(304)	38	(797)
Accounts payable	32,019	5,274	4,494
Income tax payable	3,946
Deferred revenue	15,546	12,996	12,825
Accrued expenses and other current liabilities	15,456	20,671	5,949
Deferred tax assets, current	(73)
Amount due to related parties	1,642	88
Deferred tax assets, non-current	(211)
Other non-current liabilities	196	1,828
Net cash (used in) provided by operating activities	218,311	57,252	(5,933)
Cash flows from investing activities
Purchase of property and equipment	(7,026)	(13,521)	(8,740)
Proceeds from disposal of property and equipment	63
Payment for long term investments	(14,542)	(17,859)	(809)
Prepayment for long term investments	(2,635)	(2,000)
Purchase of term deposits	(509,612)	(450,000)
Cash received on maturity of term deposits	415,404	150,000
Net cash used in investing activities	(118,348)	(333,380)	(9,549)
Cash flows from financing activities
Proceeds from issuance of convertible redeemable participating preferred shares			211,750
Repurchase of convertible redeemable participating preferred shares			(30,750)
Proceeds from issuance of ordinary shares			291,012
Payment for IPO costs		(2,634)	(1,727)
Capital contribution from shareholders			15
Repurchase of ordinary shares			(58,044)
Deferred payment of purchase of property and equipment	(319)
Proceeds from exercise of share options	333	401
Net cash provided by (used in) financing activities	14	(2,233)	412,256
Effect of exchange rate on cash and cash equivalents	(11,882)	(3,138)	(1,180)
Net increase (decrease) in cash and cash equivalents	88,095	(281,499)	395,594
Cash and cash equivalents at the beginning of year	169,469	450,968	55,374
Cash and cash equivalents at the end of year	257,564	169,469	450,968
Non-cash investing and financing activities
Payable for purchase of property and equipment	623	765	1,105
Payable for deferred IPO cost			2,634
Payable for repurchase of ordinary shares	$ 6,450	$ 6,450	$ 6,450

Organization and Principal Activities

12 Months Ended

Dec. 31, 2016

Text Block [Abstract]

Organization and Principal Activities

1.	ORGANIZATION AND PRINCIPAL ACTIVITIES

Momo Inc. (the “Company”, formerly known as Momo Technology Company Limited) is the holding company for a group of companies, which is incorporated in the British Virgin Islands (“BVI”) on November 23, 2011. In July 2014, the Company was redomiciled in the Cayman Islands (“Cayman”) as an exempted company registered under the laws of the Cayman Islands, and was renamed Momo Inc. The Company, its subsidiaries, its consolidated variable interest entity (“VIE”) and VIE’s subsidiaries (collectively the “Group”) are principally engaged in providing mobile-based social networking services. The Group started its operation in July 2011. The Group started its monetization in the third quarter of 2013, by offering a platform for live video services, value-added service, mobile games and mobile marketing services.

As of December 31, 2016, details of the Company’s subsidiaries, VIE and VIE’s subsidiaries are as follows:

Date of
incorporation

Place of
incorporation

Percentage
of economic
ownership

Subsidiaries

Momo Technology HK Company Limited (“Momo HK”)

December 5, 2011

Hong Kong

100

Beijing Momo Information Technology Co., Ltd. (“Beijing Momo IT”)

March 9, 2012

PRC

100

Momo Technology Overseas Holding Company Limited (“Momo BVI”)

March 5, 2014

BVI

100

Momo Information Technologies Corp. (“Momo US”)

March 7, 2014

100

VIE

Beijing Momo Technology Co., Ltd. (“Beijing Momo”)

July 7, 2011

PRC

N/A

VIE’s subsidiaries

Chengdu Momo Technology Co., Ltd. (“Chengdu Momo”)

May 9, 2013

PRC

N/A

Shanghai Momo Technology Co., Ltd. (“Shanghai Momo”)

January 19, 2015

PRC

N/A

Chengdu Biyou Technology Co., Ltd. (“Chengdu Biyou”)

October 16, 2015

PRC

N/A

Tianjin Heer Technology co., ltd (“Tianjin Heer”)

March 7, 2016

PRC

N/A

Momo Pictures Co., Ltd.

November 11, 2016

PRC

N/A

QOOL Media (Tianjin) Co., Ltd

November 16, 2016

PRC

N/A

*	These entities are controlled by the Company pursuant to the contractual arrangements disclosed below.

The Company was established on November 23, 2011 with share capital of $15, which was 65% owned by Mr. Yan Tang, 20% owned by Mr. Yong Li, 8% owned by Mr. Xiaoliang Lei, and 7% owned by Mr. Zhiwei Li, (Yan Tang, Yong Li, Xiaoliang Lei and Zhiwei Li are collectively referred to as “Founders”) as a vehicle for the group reorganization.

The Group commenced its business in China in July 2011 through Beijing Momo which has subsequently become the Group’s VIE through the contractual arrangements described below in “the VIE arrangements”.

Beijing Momo was established by the Founders in Beijing, the People’s Republic of China (“PRC”), as a limited liability company on July 7, 2011, which was 65% owned by Mr. Yan Tang, 20% owned by Mr. Yong Li, 8% owned by Mr. Xiaoliang Lei, and 7% owned by Mr. Zhiwei Li. Beijing Momo and its subsidiaries principally engaged in the provision of substantially all of the Group’s services in the PRC.

The Company owns 100% of the equity interests in Momo HK, an intermediate holding company incorporated in Hong Kong on December 5, 2011, which owns 100% of the equity interests in Beijing Momo IT, a wholly foreign-owned enterprise (“WFOE”), incorporated in the PRC by the Company on March 9, 2012.

The Company entered into a group reorganization by way of entering into a series of contractual arrangements between its WFOE, VIE and the Company on April 18, 2012. Immediately after the reorganization, the Founders controlled the Company, WFOE and Beijing Momo; therefore, the reorganization was accounted for as a transaction among entities under common control. Accordingly, the accompanying audited consolidated financial statements have been prepared by using historical cost basis and include the assets, liabilities, revenue, expenses and cash flows that were directly attributable to Beijing Momo for all periods presented.

In December 2014, the Company completed its IPO and a concurrent private placement, upon which the Company’s ordinary shares were divided into Class A ordinary shares and Class B ordinary shares. Holders of Class A ordinary shares are entitled to one vote per share, while holders of Class B ordinary shares are entitled to ten votes per share. Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof, while Class A ordinary shares are not convertible to Class B ordinary shares under any circumstances. The Company newly issued 45,688,888 Class A ordinary shares, consist of (i) 36,800,000 Class A ordinary shares offered through the IPO, and (ii) 8,888,888 Class A ordinary shares issued in connection with the concurrent private placement. All of the Company’s Series A, Series B, Series C and Series D shares were automatically converted upon IPO into 200,718,811 Class A ordinary shares.

The VIE arrangements

PRC regulations currently limit direct foreign ownership of business entities providing value-added telecommunications services, advertising services and internet services in the PRC where certain licenses are required for the provision of such services. To comply with these PRC regulations, Beijing Momo IT and Beijing Momo’s shareholders entered into various contractual arrangements whereby the shareholders’ claim to the economic benefits of Beijing Momo and their ability to control the activities of Beijing Momo were transferred to Beijing Momo IT.

The Group provides substantially all of its services in China through Beijing Momo, Chengdu Momo and Tianjin Heer, which hold the operating licenses and approvals to enable the Group to provide such mobile internet content services in the PRC. The equity interests of Beijing Momo are legally held by certain employees and shareholders of the Company (“Nominee Shareholders”).

The Company obtained control over Beijing Momo through Beijing Momo IT on April 18, 2012 by entering into a series of contractual arrangements between Beijing Momo IT, Beijing Momo and its Nominee Shareholders that enable the Company to (1) have power to direct the activities that most significantly affects the economic performance of the VIE, and (2) receive the economic benefits of the VIE that could be significant to the VIE. Accordingly, the Company is considered the primary beneficiary of the VIE and has consolidated the VIE’s financial results of operations, assets and liabilities in the Company’s consolidated financial statements. In making the conclusion that the Company is the primary beneficiary of the VIE, the Company’s rights under the Power of Attorney also provide the Company’s abilities to direct the activities that most significantly impact the VIE’s economic performance. The Company also believes that this ability to exercise control ensures that the VIE will continue to execute and renew the Exclusive Technology Consulting and Management Services Agreement and pay service fees to the Company. By charging service fees in whatever amounts the Company deems fit, and by ensuring that the Exclusive Technology Consulting and Management Services Agreement is executed and renewed indefinitely, the Company has the rights to receive substantially all of the economic benefits from the VIE.

To further strengthen the Company’s corporate structure, the Group amended its Power of Attorney, Exclusive Call Option Agreement and Equity Interest Pledge Agreement with the Nominee Shareholders and also entered into the Spousal Consent Letters with the Nominee Shareholders in April 2014, and amended the Exclusive Cooperation Agreements and Supplemental Agreements in August 2014. There was no substantial change to the term and condition of the VIE agreements and the change had no impact on to the Company’s VIE consolidation. The following is a summary of the contractual agreements that the Company, through Beijing Momo IT, entered into with Beijing Momo and its Nominee Shareholders, as amended and entered into on April 18, 2014 and August 31, 2014:

Agreements that provide the Company effective control over the VIE:

(1)

Power of Attorney

Pursuant to the Power of Attorney, the Nominee Shareholders of Beijing Momo each irrevocably appointed Beijing Momo IT as the attorney-in-fact to act on their behalf on all matters pertaining to Beijing Momo and to exercise all of their rights as a shareholder of Beijing Momo, including but not limited to convene, attend and vote on their behalf at shareholders’ meetings, designate and appoint directors and senior management members. Beijing Momo IT may authorize or assign its rights under this appointment to a person as approved by its board of directors at its sole discretion. Each power of attorney will remain in force until the shareholder ceases to hold any equity interest in Beijing Momo. The Company believes the Powers of Attorney can demonstrate the power of its PRC subsidiary (Beijing Momo IT) to direct how the VIE should conduct its daily operations.

(2)

Exclusive Call Option Agreement

Under the Exclusive Call Option Agreement among Beijing Momo IT, Beijing Momo and Nominee Shareholders of Beijing Momo, each of the Nominee Shareholders irrevocably granted Beijing Momo IT or its designated representative(s) an exclusive option to purchase, to the extent permitted under PRC law, all or part of his, her or its equity interests in Beijing Momo at the consideration equal to the nominal price or at lowest price as permitted by PRC laws.

Beijing Momo IT or its designated representative(s) have sole discretion as to when to exercise such options, either in part or in full. Without Beijing Momo IT’s written consent, the Nominee Shareholders of Beijing Momo shall not transfer, donate, pledge, or otherwise dispose any equity interests of Beijing Momo in any way. In addition, any consideration paid by Beijing Momo IT to the Nominee Shareholders of Beijing Momo in exercising the option shall be transferred back to Beijing Momo IT or its designated representative(s). This agreement could be terminated when all the shareholders’ equity were acquired by the WFOE or its designated representative(s) subject to the law of People’s Republic of China.

In addition, Beijing Momo irrevocably granted Beijing Momo IT an exclusive and irrevocable option to purchase any or all of the assets owned by Beijing Momo at the lowest price permitted under PRC law. Without Beijing Momo IT’s prior written consent, Beijing Momo and its Nominee Shareholders will not sell, transfer, mortgage or otherwise dispose of Beijing Momo’s material assets, legal or beneficial interests or revenues of more than RMB500,000 or allow an encumbrance on any interest in Beijing Momo.

(3)

Spousal Consent Letters

On April 18, 2014, each spouse of the married Nominee Shareholders of Beijing Momo entered into a Spousal Consent Letter, which unconditionally and irrevocably agreed that the equity interests in Beijing Momo held by and registered in the name of their spouse will be disposed of pursuant to the Equity Interest Pledge Agreement, the Exclusive Call Option Agreement, and the Power of Attorney. Each spouse agreed not to assert any rights over the equity interests in Beijing Momo held by their spouse. In addition, in the event that the spouse obtains any equity interests in Beijing Momo held by their spouse for any reason, they agreed to be bound by the contractual arrangements.

Agreements that transfer economic benefits to the Company:

(1)

Exclusive Cooperation Agreements and Supplemental Agreements

In August 2014, Beijing Momo IT entered into an Exclusive Cooperation Agreements and a Supplemental Agreement with Beijing Momo and Chengdu Momo, respectively, to supersede the Exclusive Technology Consulting and Management Services Agreements signed in April 2012 by Beijing Momo IT and Beijing Momo. In May 2016, Beijing Momo IT entered into an Exclusive Cooperation Agreement and a Supplemental Agreement with Tianjin Heer. Pursuant to the agreements, Beijing Momo IT has the exclusive right to provide, among other things, licenses, copyrights, technical and non-technical services to Beijing Momo, Chengdu Momo and Tianjin Heer and receive service fees and license fees as consideration. Beijing Momo, Chengdu Momo and Tianjin Heer will maintain a pre-determined level of operating profit and remit the excess operating profit, if any, to Beijing Momo IT as the consideration of the licenses, copyrights, technical and non-technical services provided by Beijing Momo IT. The agreements will remain effective for 10 years. At the sole discretion of Beijing Momo IT, the agreements could be renewed on applicable expirations dates, or Beijing Momo IT, Beijing Momo, Chengdu Momo and Tianjin Heer could enter into other exclusive agreements.

For the years ended December 31, 2014, 2015 and 2016, Beijing Momo IT charged Beijing Momo, Chengdu Momo and Tianjin Heer a service fee of $35,188, $112,043 and $319,018 at the WFOE’s discretion, respectively.

Since Beijing Momo IT has effectively controlled Beijing Momo through Power of Attorney, Equity Interest Pledge Agreement and Exclusive Call Option Agreement, Beijing Momo IT has the right to adjust the service fees at its sole discretion. The agreement shall remain effective for ten years. At the discretion of Beijing Momo IT, this agreement could be renewed on applicable expiration dates, or Beijing Momo IT and Beijing Momo could enter into another exclusive agreement.

(2)

Equity Interest Pledge Agreement

Under the equity interest pledge agreement among Beijing Momo IT and each of the Nominee Shareholders of Beijing Momo, the Nominee Shareholders pledged all of their equity interests in Beijing Momo to Beijing Momo IT to guarantee Beijing Momo’s and its shareholders’ payment obligations arising from the Exclusive Technology Consulting and Management Service Agreement, Business Operation Agreement and Exclusive Call Option Agreement, including but not limited to, the payments due to Beijing Momo IT for services provided.

If Beijing Momo or any of its Nominee Shareholders breaches its contractual obligations under the above agreements, Beijing Momo IT, as the pledgee, will be entitled to certain rights and entitlements, including receiving priority proceeds from the auction or sale of whole or part of the pledged equity interests of Beijing Momo in accordance with PRC legal procedures. During the term of the pledge, the shareholders of Beijing Momo shall cause Beijing Momo not to distribute any dividends and if they receive any dividends generated by the pledged equity interests, they shall transfer such received amounts to an account designated by Beijing Momo IT according to the instruction of Beijing Momo IT.

The pledge will remain binding until Beijing Momo and its Nominee Shareholders has fully performed all their obligations under the Exclusive Cooperation Agreements and Supplemental Agreements, Business Operations Agreement and Exclusive Call Option Agreement.

(3)

Business Operations Agreement

Under the Business Operations Agreement among Beijing Momo IT, Beijing Momo and the Nominee Shareholders of Beijing Momo, without the prior written consent of Beijing Momo IT or its designated representative(s), Beijing Momo shall not conduct any transaction that may substantially affect the assets, business, operation or interest of Beijing Momo IT. Beijing Momo and Nominee Shareholders shall also follow Beijing Momo IT’s instructions on management of Beijing Momo’s daily operation, finance and employee matters and appoint the nominee(s) designated by Beijing Momo IT as the director(s) and senior management members of Beijing Momo. In the event that any agreements between Beijing Momo IT and Beijing Momo terminates, Beijing Momo IT has the sole discretion to determine whether to continue any other agreements with Beijing Momo. Beijing Momo IT is entitled to any dividends or other interests declared by Beijing Momo and the shareholders of Beijing Momo have agreed to promptly transfer such dividends or other interests to Beijing Momo IT. The agreement shall remain effective for 10 years. At the discretion of Beijing Momo IT, this agreement will be renewed on applicable expiration dates, or Beijing Momo IT and Beijing Momo will enter into another exclusive agreement.

Through these contractual agreements, the Company has the ability to effectively control the VIE and is also able to receive substantially all the economic benefits of the VIE.

Risk in relation to the VIE structure

The Company believes that Beijing Momo IT and Beijing Momo’s contractual arrangements with the VIE are in compliance with PRC law and are legally enforceable. The shareholders of Beijing Momo are also shareholders of the Company and therefore have no current interest in seeking to act contrary to the contractual arrangements. However, uncertainties in the PRC legal system could limit the Company’s ability to enforce these contractual arrangements and if the shareholders of the VIE were to reduce their interest in the Company, their interests may diverge from that of the Company and that may potentially increase the risk that they would seek to act contrary to the contractual terms, for example by influencing the VIE not to pay the service fees when required to do so.

However, the Company cannot assure that when conflicts of interest arise, the shareholders will act in the best interests of the Company or that conflicts of interests will be resolved in the Company’s favor. Currently, the Company does not have existing arrangements to address potential conflicts of interest the shareholders of the VIE may encounter in their capacity as the beneficial owners and director of the VIE on the one hand, and as beneficial owners and directors or officer of the Company, on the other hand. The Company believes the shareholders of the VIE will not act contrary to any of the contractual arrangements and the Exclusive Call Option Agreement provides the Company with a mechanism to remove the shareholders as the beneficial shareholders of the VIE should they act to the detriment of the Company. The Company relies on the VIE’s shareholders, as directors and officer of the Company, to fulfill their fiduciary duties and abide by laws of the PRC and the Cayman and act in the best interest of the Company. If the Company cannot resolve any conflicts of interest or disputes between the Company and the VIE’s shareholders, the Company would have to rely on legal proceedings, which could result in disruption of its business, and there is substantial uncertainty as to the outcome of any such legal proceedings.

The Company’s ability to control the VIE also depends on the Power of Attorney. Beijing Momo IT and Beijing Momo have to vote on all matters requiring shareholder approval in the VIE. As noted above, the Company believes this power of attorney is legally enforceable but may not be as effective as direct equity ownership.

In addition, if the legal structure and contractual arrangements were found to be in violation of any existing PRC laws and regulations, the PRC government could:

•

revoke the Group’s business and operating licenses;

•

require the Group to discontinue or restrict operations;

•

restrict the Group’s right to collect revenues;

•

block the Group’s websites;

•

require the Group to restructure the operations in such a way as to compel the Group to establish a new enterprise, re-apply for the necessary licenses or relocate our businesses, staff and assets;

•

impose additional conditions or requirements with which the Group may not be able to comply; or

•

take other regulatory or enforcement actions against the Group that could be harmful to the Group’s business.

The imposition of any of these penalties may result in a material and adverse effect on the Group’s ability to conduct the Group’s business. In addition, if the imposition of any of these penalties causes the Group to lose the rights to direct the activities of the VIE or the right to receive their economic benefits, the Group would no longer be able to consolidate the VIE. The Group does not believe that any penalties imposed or actions taken by the PRC government would result in the liquidation of the Company, Beijing Momo IT, or the VIE.

The following consolidated financial statements amounts and balances of the VIE were included in the accompanying consolidated financial statements after the elimination of intercompany balances and transactions as of and for the years ended December 31:


	As of December 31,
	2015		2016
Cash and cash equivalents	$	60,526	$	36,855
Accounts receivable, net of allowance for doubtful accounts of $nil and $nil as of December 31, 2015 and 2016, respectively		14,896		36,078
Amount due from related parties		1,175		88
Prepaid expenses and other current assets		9,495		20,613
Deferred tax assets, current		—		72

Total current assets		86,092		93,706

Property and equipment, net		1,538		1,854
Rental deposits		244		325
Other non-current assets		—		2,593
Long term investments		19,318		26,541
Deferred tax assets, non-current		—		208

Total assets		107,192		125,227

Accounts payable		9,040		36,812
Deferred revenue		28,274		41,277
Accrued expenses and other current liabilities		1,954		6,632
Amounts due to related parties		—		1,510
Income tax payable		—		3,881

Total current liabilities		39,268		90,112

Total liabilities	$	39,268	$	90,112


	For the years ended December 31,
	2014			2015			2016
Net revenues	$	44,755		$	133,988		$	553,098
Net income	$	32,945		$	118,404		$	340,366
Net cash provided by operating activities	$	40,383		$	124,786		$	360,433
Net cash used in investing activities	$	(1,921	)	$	(19,435	)	$	(11,027	)
Net cash used in financing activities	$	—		$	—		$	—

The unrecognized revenue-producing assets that are held by the VIE are primarily self-developed intangible assets such as domain names, trademark and various licenses which are un-recognized at consolidated balance sheets.

The VIE contributed an aggregate of 100%, 100% and 100% of the consolidated net revenues for the years ended December 31, 2014, 2015 and 2016, respectively. As of the fiscal years ended December 31, 2015 and 2016, the VIE accounted for an aggregate of 19.8% and 16.3%, respectively, of the consolidated total assets, and 53.2% and 66.4%, respectively, of the consolidated total liabilities. The assets that were not associated with the VIE primarily consist of cash and cash equivalents, and term deposits.

There are no consolidated VIE’s assets that are collateral for the VIE’s obligations and can only be used to settle the VIE’s obligations. There are no creditors (or beneficial interest holders) of the VIE that have recourse to the general credit of the Company or any of its consolidated subsidiaries. There are no terms in any arrangements, considering both explicit arrangements and implicit variable interests, that require the Company or its subsidiaries to provide financial support to the VIE. However, if the VIE ever needs financial support, the Company or its subsidiaries may, at its option and subject to statutory limits and restrictions, provide financial support to its VIE through loans to the shareholders of the VIE or entrustment loans to the VIE. Relevant PRC laws and regulations restrict the VIE from transferring a portion of its net assets, equivalent to the balance of its statutory reserve and its share capital, to the Company in the form of loans and advances or cash dividends. Please refer to Note 18 for disclosure of restricted net assets. The Group may lose the ability to use and enjoy assets held by the VIE that are important to the operation of business if the VIE declares bankruptcy or becomes subject to a dissolution or liquidation proceeding.

Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Significant Accounting Policies

2.	SIGNIFICANT ACCOUNTING POLICIES

Basis of presentation

The consolidated financial statements of the Group have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”).

Basis of consolidation

The consolidated financial statements of the Group include the financial statements of Momo Inc., its subsidiaries, its VIE and VIE’s subsidiaries. All inter-company transactions and balances have been eliminated upon consolidation.

Use of estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and revenues, cost and expenses in the financial statements and accompanying notes. Significant accounting estimates reflected in the Group’s consolidated financial statements include revenue recognition, the useful lives and impairment of property and equipment, valuation allowance for deferred tax assets, share-based compensation and fair value of the ordinary shares and convertible redeemable participating preferred shares.

Cash and cash equivalents

Cash and cash equivalents consist of cash on hand and highly liquid investments, which are unrestricted from withdrawal or use, or which have original maturities of three months or less when purchased.

Term deposits

Term deposits consist of bank deposits with an original maturity of over three months.

Accounts receivable

Accounts receivable primarily represents the cash due from third-party application stores and other payment channels and advertising customers, net of allowance for doubtful accounts. The Group makes estimates for the allowance for doubtful accounts based upon its assessment of various factors, including the age of accounts receivable balances, credit quality of third-party application stores and other payment channels and advertising customers, current economic conditions and other factors that may affect their ability to pay. An allowance for doubtful accounts is recorded in the period in which a loss is determined to be probable. As of December 31, 2015 and 2016, the Company has determined the risk of uncollected receivable is remote.

Financial instruments

Financial instruments of the Group primarily consist of cash and cash equivalents, term deposits, accounts receivable, cost method investments, available-for-sale investments, accounts payable, deferred revenue, income tax payable, amount due from related parties and amount due to related parties.

Cash and cash equivalents are recorded at fair value based on the quoted market price in an active market. The carrying values of term deposits, accounts receivable, accounts payable, deferred revenue, income tax payable, amount due from related parties and amount due to related parties approximate their fair values due to short-term maturities. It is not practical to estimate the fair value of the Group’s cost method investments because of the lack of quoted market price and the inability to estimate fair value without incurring excessive costs. Available-for-sale investments are reported at fair value, which is discussed in Note 8.

Foreign currency risk

The Renminbi (“RMB”) is not a freely convertible currency. The State Administration for Foreign Exchange, under the authority of the People’s Bank of China, controls the conversion of RMB into foreign currencies. The value of the RMB is subject to changes in central government policies and to international economic and political developments affecting supply and demand in the China Foreign Exchange Trading System market. Cash and cash equivalents of the Group included aggregate amounts of $75,759 and $245,853 as of December 31, 2015 and 2016, respectively, which were denominated in RMB.

Concentration of credit risk

Financial instruments that potentially expose the Group to concentration of credit risk consist primarily of cash and cash equivalents, term deposits and accounts receivable. The Group places their cash with financial institutions with high-credit ratings and quality.

Third-party application stores and other payment channels accounting for 10% or more of accounts receivables are as follows:


	As of December 31,
	2015			2016
A		31	%		40	%
B		8	%		22	%
C		1	%		15	%

No user or advertising customer accounted for 10% or more of accounts receivables for the years ended December 31, 2015 and 2016, respectively.

Concentration of revenue

The following table summarizes sales generated from games that individually accounting for 10% or more of net revenues:


	For the years ended December 31,
	2014			2015			2016
Game D		14	%		2	%		less than 1	%

No user or advertising customer accounted for 10% or more of net revenues for the years ended December 31, 2014, 2015 and 2016, respectively.

Cost method investments

For investments in an investee over which the Company does not have significant influence, the Company carries the investment at cost and recognizes income as any dividends declared from distribution of investee’s earnings. The Company reviews the cost method investments for impairment whenever events or changes in circumstances indicate that the carrying value may no longer be recoverable. An impairment loss is recognized in earnings equal to the difference between the investment’s cost and its fair value at the balance sheet date of the reporting period for which the assessment is made. The fair value of the investment would then become the new cost basis of the investment.

Equity method investments

The investee company over which the Group has the ability to exercise significant influence, but does not have a controlling interest are accounted for using the equity method. Significant influence is generally considered to exist when the Group has an ownership interest in the voting stock of the investee between 20% and 50%. Other factors, such as representation in the investee’s Board of Directors, voting rights and the impact of commercial arrangements, are also considered in determining whether the equity method of accounting is appropriate. For the investment in limited partnerships, where the Group holds less than a 20% equity or voting interest, the Group’s influence over the partnership operating and financial policies is determined to be more than minor. Accordingly, the Group accounts for these investments as equity method investments.

Under the equity method of accounting, the affiliated company’s accounts are not reflected within the Group’s consolidated balance sheets and statements of operations; however, the Group’s share of the earnings or losses of the affiliated company is reflected in the caption “share income on equity method investments” in the consolidated statements of operations.

An impairment change is recorded if the carrying amount of the investment exceeds its fair value and this condition is determined to be other-than-temporary.

The Group estimates the fair value of the investee company based on comparable quoted price for similar investment in active market, if applicable, or discounted cash flow approach which requires significant judgments, including the estimation of future cash flows, which is dependent on internal forecasts, the estimation of long term growth rate of a company’s business, the estimation of the useful life over which cash flows will occur, and the determination of the weighted average cost of capital.

Available-for-sale Investments

For investments in investees’ stocks which are determined to be debt securities, the Group accounts for them as long-term available-for-sale investments when they are not classified as either trading or held-to-maturity investments.

Available-for-sale investments are reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income (loss) as a component of shareholders’ equity. Realized gains and losses and provision for decline in value judged to be other than temporary, if any, are recognized in the consolidated statements of operations.

The Group continually reviews its available-for-sale investments to determine whether a decline in fair value below the carrying value is other than temporary. The primary factors the Group considers in its determination are the length of time that the fair value of the investment is below the Group’s carrying value; the financial condition, operating performance and the prospects of the available-for-sale investee; and other specific information such as recent financing rounds. If the decline in fair value is deemed to be other than temporary, the carrying value of the available-for-sale investee is written down to fair value. The Group estimated the fair value of these investee companies based on discounted cash flow approach which requires significant judgments, including the estimation of future cash flows, which is dependent on internal forecasts, the estimation of long term growth rate of a company’s business, the estimation of the useful life over which cash flows will occur, and the determination of the weighted average cost of capital.

Property and equipment, net

Property and equipment are stated at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the following estimated useful lives:


Office equipment			3-5 years
Computer equipment			3 years
Vehicles			5 years
Leasehold improvement			Shorter of the lease term or estimated useful lives

Impairment of long-lived assets

The Group reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may no longer be recoverable. When these events occur, the Group measures impairment by comparing the carrying value of the long-lived assets to the estimated undiscounted future cash flows expected to result from the use of the assets and their eventual disposition. If the sum of the expected undiscounted cash flow is less than the carrying amount of the assets, the Group would recognize an impairment loss based on the fair value of the assets.

Fair value

Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Group considers the principal or most advantageous market in which it would transact and it considers assumptions that market participants would use when pricing the asset or liability.

Authoritative literature provides a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. An asset or liability categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement as follows:

Level 1

Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.

Level 2

Level 2 applies to assets or liabilities for which there are inputs other than quoted prices included within Level 1 that are observable for the assets or liabilities such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market data.

Level 3

Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.

Revenue recognition

The Group recognizes revenue when a persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or determinable, and collectability is reasonably assured. The Group principally derives its revenue from live video service, value-added services, mobile marketing services, mobile games and other services.

(a)

Live video service

The Group provides live video service whereby users can enjoy live performances and interact with the broadcasters for free, and have the option of purchasing in-show virtual items. Broadcasters can either host the performance on their own or join a broadcaster agency. Users purchase virtual gifts from the Group and present them simultaneously to broadcasters to show their support. The Group determines the virtual items price and generates revenue from sales of virtual gifts upon purchase. Under the arrangements with broadcasters or broadcaster agencies, the Group shares with them a portion of the revenues derived from the sales of virtual gifts. Revenues derived from the sale of virtual gifts are recorded on a gross basis as the Group has determined that it acts as the principal to fulfill all obligations related to the live video services. The portion paid to broadcasters and/or broadcaster agencies is recognized as cost of revenues.

Net revenues of $nil, $1,231 and $376,925 were recognized for live video services for the years ended December 31, 2014, 2015 and 2016, respectively.

(b)

Value-added services

Value-added services revenues include membership subscription revenue and virtual gift service revenues. Membership subscription is a service package which enables members to enjoy additional functions and privileges. The contract period for the membership subscription ranges from one month to one year. All membership subscription is nonrefundable. The Group collects membership subscription in advance and records it as deferred revenue. Revenue is recognized ratably over the contract period for the membership subscription services.

Virtual gift services was launched in 2016 to enhance users’ experience of interaction and social networking with each other. Users purchase virtual gifts and send the virtual gifts simultaneously to other users. Revenue recognized related to virtual gift services is insignificant for each of the year presented.

Net revenues of $29,756, $58,462 and $67,603 were recognized for value-added services for the years ended December 31, 2014, 2015 and 2016, respectively.

(c)

Mobile marketing

The Group provides advertising and marketing solutions to customers for promotion of their brands and conduction of effective marketing activities through its mobile application.

Display-based mobile marketing services

For display-based online advertising services such as banners and location-based advertising on the mobile applications, the Group recognizes revenue ratably over the period that the advertising is provided commencing on the date the customer’s advertisement is displayed, or on the number of times that the advertisement has been displayed for cost per thousand impressions advertising arrangements.

Performance-based mobile marketing services

The Group enables advertising customers to place link on its mobile platform on a pay-for-effectiveness basis, which is referred to as the cost for performance model. The Group charges fees to advertising customers based on the effectiveness of advertising links, which is measured by active clicks. Revenue is estimated by the Group based on its internal data, which is confirmed with respective customers, or is recognized based on a fixed unit price.

The Group’s revenue transactions are based on standard business terms and conditions, which are recognized net of agency rebates, if applicable.

Net revenues of $1,975, $38,885 and $66,339 were recognized for mobile marketing for the years ended December 31, 2014, 2015 and 2016, respectively.

(d)

Mobile games

The Group publishes both licensed mobile games developed by third-party game developers and its self-developed games to the game players through its mobile application.

Licensed mobile games

The Group generates revenue from offering services of mobile games developed by third-party game developers. All of the licensed games can be accessed and played by game players directly through the Group’s mobile game platform. The Group primarily views the game developers to be its customers and considers its responsibility under its agreements with the game developers to be promotion of the game developers’ games. The Group generally collects payments from game players in connection with the sale of in-gamecurrencies and remits certain agreed-upon percentages of the proceeds to the game developers and records revenue net of remittances. Purchases of in-game currencies are not refundable after they have been sold unless there is unused in-game currencies at the time a game is discontinued. Typically, a game will only be discontinued when the monthly revenue generated by a game becomes consistently insignificant. The Group does not currently expect to pay any material cash refunds to game players or game developers in connection with a discontinued game.

Licensed mobile games - Non-exclusive mobile games services

The Group enters into non-exclusive agreements with the game developers and offers the Group’s mobile game platform for the mobile games developed by the game developers. The Group has determined that it has no additional performance obligation to the developers or game players upon players’ completion of the corresponding in-game purchase. Therefore, revenues from the sale of in-game currencies are primarily recorded net of remittances to game developers and commission fees made to third-party application stores and other payment channels and deferred until the estimated consumption date by individual game (i.e., the estimated date in-game currencies are consumed within the game), which is typically within a short period of time ranging from zero to six days after the purchase of the in-game currencies.

Licensed mobile games - Exclusive mobile games services

The Group enters into exclusive agreements with the game developers and provides the Group’s mobile game platform for the mobile games developed by the game developers. Under the exclusive agreements, the players can access to the games only through the Group’s platform. The Group has determined that it is obligated to provide mobile games services to game players who purchased virtual items to gain an enhanced game-playing experience over an average period of player relationship. Hence, the Group believes that its performance for, and obligation to, the game developers correspond to the game developers’ services to the players. The Group does not have access to the data on the consumption details and the types of virtual items purchased by the game players. Therefore, the Group cannot estimate the economic life of the virtual item. However, the Group maintains data of when a particular player purchases the virtual items and logs into the games. The Group has adopted a policy to recognize revenues net of remittances to game developers and commission fees made to third-party application stores and other payment channels over the estimated period of player relationship on a game-by-game basis. As of December 31, 2015 and 2016, the Group operated seven and six games under exclusive arrangements and the estimated periods of the player relationship is in a range of 20 to 75 and 20 to 99 days, respectively.

Self-developed mobile game

In February 2015, the Group launched one self-developed game on its platform and started to generate revenues by in-game sales of virtual item. The Group has determined that an obligation exists to the players who purchased the virtual items to gain an enhanced game-playing experience over the playing period of the paying players, and accordingly, recognized the revenues ratably over the estimated average period of player relationship starting from the point in time when the players purchase the virtual items, and all other revenue recognition criteria are met. As of December 31, 2015 and 2016, the Group operated one and six self-developed mobile games and the estimated periods of the player relationship is 56 days and in a range of 20 to 110 days, respectively.

Revenues derived from the self-developed game are recorded on a gross basis as the Group acts as a principal to fulfill all obligations related to the mobile game operation. Commission fees paid to third-party application stores and other payment channels are recorded as cost of revenues.

Net revenues of $11,237, $31,082 and $35,453 were recognized for mobile games for the years ended December 31, 2014, 2015 and 2016, respectively.

(e)

Other service

Other service primarily includes Duobao service and paid emoticons.

Advertising barter transactions

The Group engages in barter transactions where it trades advertising resources with certain third parties for other advertising resources and goods. The Group recognizes revenues and expenses at fair value only if the fair value of the services exchanged in the transaction is determinable based on the Group’s own historical practice of receiving cash or other consideration that is readily convertible to a known amount of cash for similar advertising resources from customers unrelated to the party in the barter transaction. When the fair value of the transactions is not determinable due to the lack of the Group’s similar historical practice, the advertising barter transactions shall be recorded based on the carrying amount of the advertising surrendered which is the estimated cost to be incurred, or the fair value of the assets received. Advertising barter transactions were insignificant for all the years presented.

Deferred revenue

Deferred revenue primarily includes cash received in advance from users and advertising customers. The unused cash balances remaining in users’ and advertising customers’ accounts are recorded as a liability. Deferred revenue related to prepayments from users and advertising customers will be recognized as revenue when all of the revenue recognition criteria are met.

Cost of revenues

Cost of revenues consist of expenditures incurred in the generation of the Group’s revenues, including but not limited to revenue sharing with the broadcasters and broadcaster agencies related to live video service, commission fee paid to third-party application stores and other payment channels except for those paid related to licensed mobile games which are recorded net of revenue, bandwidth costs, salaries and benefits paid to employee, short messaging service charges and depreciation. These costs are expensed as incurred except for the direct and incremental platform commission fees to third-party application stores and other payment channels which are deferred in “Prepaid expenses and other current assets” on the consolidated balance sheets. The deferred platform commissions are recognized in the consolidated statements of operations in “Cost of revenues” in the period in which the related revenues are recognized.

Government subsidies

The Group records government subsidies as other income when received from local government authority and they are not subject to any further performance obligations or future returns. When government subsidies are received and include future performance obligations, the Group recognizes those as liabilities until the performances obligations have been met at which time, those are recognized as other income. Government subsidies recorded as other income amounted to $nil, $nil and $293 for the years ended December 31, 2014, 2015 and 2016.

Research and development expenses

Research and development expenses primarily consist of (i) salaries and benefits for research and development personnel, and (ii) office rental, general expenses and depreciation expenses associated with the research and development activities. The Group’s research and development activities primarily consist of the research and development of new features for its mobile platform and its self-developed mobile games. The Group has expensed all research and development expenses when incurred.

Value added taxes (“VAT”)

Entities that are VAT general taxpayers are allowed to offset qualified input VAT paid to suppliers against their output VAT liabilities. Net VAT balance between input VAT and output VAT is recorded in accrued expenses and other current liabilities on the consolidated balance sheets. VAT is also reported as a deduction to revenue when incurred and amounted to $5,436, $16,951 and $55,353 for the years ended December 31, 2014, 2015 and 2016, respectively.

Income taxes

Current income taxes are provided for in accordance with the laws of the relevant tax authorities. Deferred income taxes are recognized when temporary differences exist between the tax bases of assets and liabilities and their reported amounts in the consolidated financial statements. Net operating loss carry forwards and credits are applied using enacted statutory tax rates applicable to future years. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more-likely-than-not that a portion of or all of the deferred tax assets will not be realized. The components of the deferred tax assets and liabilities are individually classified as current and non-current based on their characteristics.

The impact of an uncertain income tax position on the income tax return is recognized at the largest amount that is more-likely than- not to be sustained upon audit by the relevant tax authority. An uncertain income tax position will not be recognized if it has less than a 50% likelihood of being sustained. Interest and penalties on income taxes will be classified as a component of the provisions for income taxes. The Group recognized income tax expense amounted to $nil, $92 and $5,136 for the years ended December 31, 2014, 2015 and 2016, respectively.

Foreign currency translation

The functional and reporting currency of the Company is the United States dollar (“U.S. dollar”). The financial records of the Group’s subsidiaries, VIE and VIE’s subsidiaries located in the PRC are maintained in their local currencies, the RMB, which are also the functional currencies of these entities.

Monetary assets and liabilities denominated in currencies other than the functional currency are translated into the functional currency at the rates of exchange in place at the balance sheet date. Transactions in currencies other than the functional currency during the year are converted into the functional currency at the applicable rates of exchange prevailing when the transactions occurred. Transaction gains and losses are recognized in the consolidated statement of operations.

The Group’s entities with functional currency of RMB, translate their operating results and financial positions into the U.S. dollar, the Group’s reporting currency. Assets and liabilities are translated using the exchange rates in effect on the balance sheet date. Revenues, expenses, gains and losses are translated using the average rate for the year. Translation adjustments are reported as cumulative translation adjustments and are shown as a separate component of comprehensive loss.

Operating leases

Leases where the rewards and risks of ownership of assets primarily remain with the lessor are accounted for as operating leases. Payments made under operating leases are charged to the consolidated statements of operations on a straight-line basis over the lease periods.

Advertising expenses

The Group expenses advertising expenses as incurred. Total advertising expenses incurred were $27,408, $27,793 and $55,188 for the years ended December 31, 2014, 2015 and 2016, respectively, and have been included in sales and marketing expenses in the consolidated statements of operations.

Comprehensive (loss) income

Comprehensive (loss) income includes net (loss) income, unrealized gain or loss on available-for-sale investments and foreign currency translation adjustments. Comprehensive (loss) income is reported in the consolidated statements of comprehensive (loss) income.

Share-based compensation

Share-based payment transactions with employees and executives are measured based on the grant date fair value of the equity instrument issued and recognized as compensation expense net of a forfeiture rate on a straight-line basis, over the requisite service period, with a corresponding impact reflected in additional paid-in capital.

Share awards issued to consultants are measured at fair value at the earlier of the commitment date or the date the services are completed and recognized over the period the services are provided.

The estimate of forfeiture rate will be adjusted over the requisite service period to the extent that actual forfeiture rate differs, or is expected to differ, from such estimates. Changes in estimated forfeiture rate will be recognized through a cumulative catch-up adjustment in the period of change.

Changes in the terms or conditions of share options are accounted as a modification under which the Group calculates whether there is any excess of the fair value of the modified option over the fair value of the original option immediately before its terms are modified, measured based on the share price and other pertinent factors at the modification date. For vested options, the Group recognizes incremental compensation cost in the period of the modification occurred and for unvested options, the Group recognizes, over the remaining requisite service period, the sum of the incremental compensation cost and the remaining unrecognized compensation cost for the original award on the modification date.

Earnings (loss) per share

Basic earnings (loss) per ordinary share is computed by dividing net income (loss) attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period.

The Group’s convertible redeemable participating preferred shares are participating securities as they participate in undistributed earnings on an as-if-converted basis. The Group determined that the nonvested restricted shares are participating securities as the holders of the nonvested restricted shares have a nonforfeitable right to receive dividends with all ordinary shares but the nonvested restricted shares do not have a contractual obligation to fund or otherwise absorb the Company’s losses. Accordingly, the Group uses the two-class method whereby undistributed net income is allocated on a pro rata basis to the ordinary shares, preferred shares and nonvested restricted shares to the extent that each class may share in income for the period; whereas the undistributed net loss for the period is allocated to ordinary shares only because the convertible redeemable participating preferred shares and nonvested restricted shares are not contractually obligated to share the loss.

Diluted earnings (loss) per ordinary share reflect the potential dilution that could occur if securities were exercised or converted into ordinary shares. The Group had convertible redeemable participating preferred shares, share options and restricted share units, which could potentially dilute basic earnings (loss) per share in the future. To calculate the number of shares for diluted earnings (loss) per ordinary share, the effect of the convertible redeemable participating preferred shares is computed using the as-if-converted method; the effect of the share options and restricted share units is computed using the treasury stock method.

Recent accounting pronouncements not yet adopted

In May 2014, the FASB issued, ASU 2014-09, “Revenue from Contracts with Customers (Topic 606)”. The guidance substantially converges final standards on revenue recognition between the FASB and the International Accounting Standards Board providing a framework on addressing revenue recognition issues and, upon its effective date, replaces almost all exiting revenue recognition guidance, including industry-specific guidance, in current U.S. generally accepted accounting principles.

The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps:

•

Step 1: Identify the contract (s) with a customer.

•

Step 2: Identify the performance obligations in the contract.

•

Step 3: Determine the transaction price.

•

Step 4: Allocate the transaction price to the performance obligations in the contract.

•

Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.

In August 2015, FASB issued its final standard formally amending the effective date of the new revenue recognition guidance. The amendments in this ASU are effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The new revenue guidance may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption.

The Group is in the process of evaluating the impact of adoption of this guidance on its consolidated financial statements.

In November, 2015, the FASB issued a new pronouncement ASU 2015-17 which changes how deferred taxes are classified on organizations’ balance sheets.

The ASU eliminates the current requirement for organizations to present deferred tax liabilities and assets as current and noncurrent in a classified balance sheet. Instead, organizations will be required to classify all deferred tax assets and liabilities as noncurrent.

The amendments apply to all organizations that present a classified balance sheet. For public companies, the amendments are effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted for all entities as of the beginning of an interim or annual reporting period. This ASU may be applied prospectively to all deferred tax liabilities and assets or retrospectively to all periods presented. The Group does not expect the adoption of this guidance will have a significant effect on the Group’s consolidated financial statements.

In January, 2016, the FASB issued a new pronouncement ASU 2016-01 which is intended to improve the recognition and measurement of financial instruments. The ASU affects public and private companies, not-for-profit organizations, and employee benefit plans that hold financial assets or owe financial liabilities.

The new guidance makes targeted improvements to existing U.S. GAAP by:

•

Requiring equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income;

•

Requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes;

•

Requiring separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements;

•

Eliminating the requirement to disclose the fair value of financial instruments measured at amortized cost for organizations that are not public business entities;

•

Eliminating the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; and

•

Requiring a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk (also referred to as “own credit”) when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments.

The new guidance is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The new guidance permits early adoption of the own credit provision. Adoption of the amendment must be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption, except for amendments related to equity instruments that do not have readily determinable fair values which should be applied prospectively. The Group does not expect the adoption of this guidance will have a significant effect on the Group’s consolidated financial statements.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The guidance supersedes existing guidance on accounting for leases with the main difference being that operating leases are to be recorded in the statement of financial position as right-of-use assets and lease liabilities, initially measured at the present value of the lease payments. For operating leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election not to recognize lease assets and liabilities. For public business entities, the guidance is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the guidance is permitted. In transition, entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The Group is currently evaluating the impact the adoption of ASU No. 2016-02 will have on its consolidated financial statements, but the Group expects that most existing operating lease commitments will be recognized as operating lease obligations and right-of-use assets as a result of this adoption.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718). The new guidance simplifies certain aspects related to income taxes, statement of cash flows, and forfeitures when accounting for share-based payment transactions. This new guidance was effective for the Company for the first reporting period beginning after December 15, 2016, with earlier adoption permitted. Certain of the amendments related to timing of the recognition of tax benefits and tax withholding requirements should be applied using a modified retrospective transition method. Amendments related to the presentation of the statement of cash flows should be applied retrospectively. All other provisions may be applied on a prospective or modified retrospective basis. The Group is in the process of evaluating the impact that this guidance will have on its consolidated financial statements.

Accounts Receivable, Net

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Accounts Receivable, Net

3.	ACCOUNTS RECEIVABLE, NET

Accounts receivable, net consisted of the following:


	As of December 31,
	2015		2016
Accounts receivable	$	14,896	$	36,078
Less: allowance for doubtful accounts		—		—

Accounts receivable, net	$	14,896	$	36,078

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid Expenses and Other Current Assets

12 Months Ended

Dec. 31, 2016

Prepaid Expenses and Other Current Assets

4.	PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets consisted of the following:


	As of December 31,
	2015		2016
Advance to advertisement suppliers	$	296	$	5,331
Customer advance at a third-party payment channel (i)		—		4,845
Interest receivable		5,412		4,821
Deferred platform commission cost		2,424		4,571
Input VAT (ii)		3,485		2,968
Prepaid income tax and other expenses		1,620		2,964
Game promotions fees paid on behalf of game developers		—		2,250
Advance to game developers		4,200		1,550
Others		860		3,292

	$	18,297	$	32,592

(i)

Customer advance at a third party payment channel is the cash deposited in a third party payment channel by the Group for the broadcasters to withdraw their revenue sharing.

(ii)

Input VAT mainly occurred from the purchasing of goods for other services, property and equipment and advertising activities. It is subject to verification by related tax authorities before offsetting the VAT output.

Long Term Investments

12 Months Ended

Dec. 31, 2016

Investments Schedule [Abstract]

Long Term Investments

5.	LONG TERM INVESTMENTS


	As of December 31,
	2015		2016
Equity method investments
Jingwei Chuangteng (Hangzhou) L.P. (i)	$	3,836	$	4,191
Beijing Autobot Venture Capital L.P. (ii)		4,898		6,736
Hangzhou Aqua Ventures Investment Management L.P. (iii)		7,632		9,187
Hunan Qindao Cultural Spread Ltd. (viii)		—		2,016
Others (iv)		1,060		702

Cost method investments
Zya, Inc. (v)		—		1,005
Others (vi)		1,892		829

Available-for-sale investments
Xish International Limited (vii)		—		4,386
Hunan Qindao Cultural Spread Ltd. (viii)		—		2,880

	$	19,318	$	31,932

Equity method investments

(i)

On January 9, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Jingwei Chuangteng (Hangzhou) L.P. (“Jingwei”). According to the partnership agreement, the Group committed to subscribe 4.9% partnership interest in Jingwei for $4,744. Due to Jingwei’s further rounds of financing, the Group’s partnership interest was diluted to 3.1% and 2.4% as of December 31, 2015 and 2016, respectively. Of the committed subscription amount, $3,586 had been paid as of December 31, 2016. The Group recognized its share of partnership profit in Jingwei of $366 and $633 during the year ended December 31, 2015 and 2016, respectively.

(ii)

On February 13, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Beijing Autobot Venture Capital L.P. (“Autobot”). According to the partnership agreement, the Group committed to subscribe 31.9% partnership interest in Autobot for $4,823. Autobot had further rounds of financing, of which the Group subscribed for $1,529. Due to Autobot’s further round of financing, the Group’s partnership interest was diluted to 29.7% and 26.7% as of December 31, 2015 and 2016, respectively. The committed subscription and further round of financing subscription amount, $6,352 had been paid for the year ended December 31, 2016. The Group recognized its share of partnership profit in Autobot of $274 and $771 during the year ended December 31, 2015 and 2016, respectively.

(iii)

On August 18, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Hangzhou Aqua Ventures Investment Management L.P. (“Aqua”). According to the partnership agreement, the Group committed to subscribe 42.7% partnership interest for $7,930. The committed subscription amount had been fully paid as of December 31, 2016. The Group recognized its share of partnership loss and profit in Aqua of $89 and $2,134 during the years ended December 31, 2015 and 2016, respectively.

(iv)

Others represents other equity method investments with individual carrying amount less than $1,000 as of December 31, 2015 and 2016, respectively. The Group performed an impairment analysis for these investments and recorded impairment loss of $nil, $nil and $186 during the years ended December 31, 2014, 2015 and 2016, respectively.

Cost method investments

(v)

On December 13, 2016, the Group acquired 15.6% equity interest in Zya, Inc., a Delaware corporation. The total consideration of $1,005 was paid in 2016. The Group applied cost method to account for the investment due to the lack of ability to exercise significant influence.

(vi)

During the years ended December 31, 2015 and 2016, the Group acquired certain equity interests in third-party private companies. The Group accounted for these investments under cost method because the Group ownership percentage is less than 20% and the Group determined that it does not have the ability to exercise significant influence. The Group determined the impairment on the above investments was $nil, $nil and $965 during the years ended December 31, 2014, 2015 and 2016, respectively.

Available-for-sale investments

(vii)

On January 21, 2016, the Group entered into a preferred share subscription agreement to acquire 17.3% equity of Xish International Limited (“Xish”) for a total consideration of $9,000, which had been paid as of December 31, 2016. The investment was classified as available-for-sale security as the Group determined that the preferred shares were debt securities due to the redemption option available to the investor and measured the investment subsequently at fair value. The Group recognized an impairment loss of $4,614 during the year ended December 31, 2016. Please refer to Note 8 for additional information on the fair value measurement related to the impairment loss.

(viii)

On June 8, 2016, the Group entered into a share purchase agreement to acquire 16.0% equity interest of Hunan Qindao Cultural Spread Ltd. (“Qindao”) for a total consideration of $4,441, of which $3,001 had been paid as of December 31, 2016. The investment was classified as available-for-sale security as the Group determined that the preferred shares were debt securities due to the redemption option available to the investor and measured the investment subsequently at fair value. No unrealized holding gains of $nil was reported in other comprehensive income for the year ended December 31, 2016.

On November 17, 2016, the Group entered into another share purchase agreement with two shareholders of Qindao and acquired additional 10.4% equity interests of Qindao for a total consideration of $2,429, of which $2,007 had been paid as of December 31, 2016. The Group accounted for this investment in common share using the equity method as the Group determined that it can exercise significant influence over Qindao.

Property and Equipment, Net

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

6.	PROPERTY AND EQUIPMENT, NET

Property and equipment, net consisted of the following:


	As of December 31,
	2015			2016
Computer equipment	$	20,177		$	23,763
Office equipment		3,073			4,370
Vehicles		34			31
Leasehold improvement		2,914			2,800
Less: accumulated depreciation		(10,440	)		(18,844	)
Exchange difference		501			1,812

		$16,259		$	13,932

Depreciation expenses charged to the consolidated statements of operations for the years ended December 31, 2014, 2015 and 2016 were $2,805, $6,646 and $8,404 respectively.

Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2016

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

7.	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accrued expenses and other current liabilities consisted of the following:


	As of December 31,
	2015		2016
Accrued payroll and welfare	$	7,406	$	18,982
Payable for advertisement		2,718		9,871
Other tax payables		1,517		4,694
VAT payable		550		1,919
Accrued professional services fee		1,506		1,438
Payable to employees for exercise of share options		11,297		—
Others		1,700		3,061

Total	$	26,694	$	39,965

Fair Value

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value

8.	FAIR VALUE

Measured on recurring basis

The Group measures its financial assets and liabilities including cash and cash equivalents and available-for-sale investments at fair value on a recurring basis as of December 31, 2015 and 2016. Cash and cash equivalents are classified within Level 1 of the fair value hierarchy because they are valued based on the quoted market price in an active market. Available-for-sale investments are debt securities and are measured at fair value on a recurring basis with changes in fair value recorded in unrealized holding gains and losses reported in other comprehensive income.

As of December 31, 2016, information about inputs for the fair value measurements of the Group’s assets that are measured at fair value on a recurring basis in periods subsequent to their initial recognition is as follows:


	Fair Value Measurement as of December 31,
Description	2016		Quoted Prices in Active Market for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
			(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents	$	257,564	$	257,564		—	$	—
Available-for-sale investments		7,266		—		—		7,266

Total	$	264,830	$	257,564		—	$	7,266

The Group measured the fair value of its available for sales investments using the income approach and consider those as Level 3 measurement because the Group used unobservable inputs to determine their fair values. Specifically, the Group estimates the fair value of these investments based on the discounted cash flow approach which requires significant judgments, including the estimation of future cash flows, which is dependent on internal forecasts, the estimation of long term growth rate of a company’s business, the estimation of the useful life over which cash flows will occur, and the determination of the weighted average cost of capital. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement.

Additional information about the reconciliation of the fair value measurement of available-for-sale investments using significant unobservable inputs (level 3) on a recurring basis are is as follows:


Balance as of December 31, 2015	$	—
Purchase		12,001
Other-than-temporary loss recognized		(4,614	)
Foreign exchange difference		(121	)

Balance as of December 31, 2016	$	7,266

Measured on nonrecurring basis

The Group measures its long-term investments (excluding long-term available for sale investments) at fair value on a nonrecurring basis whenever events or changes in circumstances indicate that the carrying value may not be recoverable. As of December 31, 2015 and 2016, the Group performed an impairment test on its cost and equity method investees and recorded an impairment loss of $nil and $1,151, respectively. Such impairment is considered a level 3 fair value measurement because the Group used unobservable inputs such as the respective investee’s growth rate and discount rate. The Group also measures its other non-financial assets such as property and equipment at fair value only if there were determined to be impaired on an other than temporary basis.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

9.	INCOME TAXES

Cayman

In July 2014, the Company was redomiciled in the Cayman Islands as an exempted company registered under the laws of the Cayman Islands. Under the current laws of the Cayman Islands, it is not subject to tax on either income or capital gain.

BVI

Momo BVI is a tax-exempted company incorporated in the BVI.

The United States (“US”)

Momo US is incorporated in the US and is subject to state income tax and federal income tax at different tax rates, depending upon taxable income levels. Momo US did not have taxable income and no income tax expense was provided for the year ended December 31, 2016.

Hong Kong

Momo HK was established in Hong Kong and is subject to Hong Kong Profits Tax at 16.5% on its profits of business carried on in Hong Kong.

PRC

In August 2014, Beijing Momo IT was qualified as a software enterprise. As such, Beijing Momo IT will be exempt from income taxes for two years beginning in its first profitable year which was from 2015 to 2016 followed by a tax rate of 12.5% for the succeeding three years which is from 2017 to 2019.

As of December 31, 2016, Chengdu Momo was in the process of filing the western China development enterprise status. The Group believes Chengdu Momo will most likely be qualified as western China development enterprise and accordingly be entitled to a preferential income tax rate of 15% in the year 2016. As a result, the Group applied 15% to determine the tax liabilities for Chengdu Momo.

The other entities incorporated in the PRC are subject to an enterprise income tax at a rate of 25%.

Since January 1, 2011, the relevant tax authorities of the Group’s subsidiaries have not conducted a tax examination on the Group’s PRC entities. In accordance with relevant PRC tax administration laws, tax years from 2014 to 2016 of the Group’s PRC subsidiary, VIE and VIE’s subsidiaries, remain subject to tax audits as of December 31, 2016, at the tax authority’s discretion.

Under the EIT Law and its implementation rules which became effective on January 1, 2008, dividends generated after January 1, 2008 and payable by foreign-invested enterprise in the PRC to its foreign investors who are non-resident enterprises are subject to a 10% withholding tax, unless any such foreign investor’s jurisdiction of incorporation has a tax treaty with PRC that provides for a different withholding arrangement. Under the taxation arrangement between the PRC and Hong Kong, a qualified Hong Kong tax resident which is the “beneficial owner” and directly holds 25% or more of the equity interest in a PRC resident enterprise is entitled to a reduced withholding tax rate of 5%. Cayman, where the Company is incorporated, does not have a tax treaty with PRC.

Uncertainties exist with respect to how the current income tax law in the PRC applies to the Group’s overall operations, and more specifically, with regard to tax residency status. The EIT Law includes a provision specifying that legal entities organized outside of the PRC will be considered residents for Chinese income tax purposes if the place of effective management or control is within the PRC. The implementation rules to the EIT Law provide that non-resident legal entities will be considered China residents if substantial and overall management and control over the manufacturing and business operations, personnel, accounting, properties, etc., occurs within the PRC. Despite the present uncertainties resulting from the limited PRC tax guidance on the issue, the Group does not believe that the legal entities organized outside of the PRC within the Group should be treated as residents for EIT law purposes. If the PRC tax authorities subsequently determine that the Company and its subsidiaries registered outside the PRC should be deemed resident enterprises, the Company and its subsidiaries registered outside the PRC will be subject to the PRC income taxes, at a rate of 25%.

If any entity within the Group that is outside the PRC were to be a non-resident for PRC tax purposes dividends paid to it out of profits earned after January 1, 2008 would be subject to a withholding tax at a rate of 10%, subject to reduction by an applicable tax treaty with the PRC.

Aggregate undistributed earnings of the Company’s subsidiaries located in the PRC that are available for distribution at December 31, 2016 are considered to be indefinitely reinvested and accordingly, no provision has been made for the Chinese dividend withholding taxes that would be payable upon the distribution of those amounts to any entity within the Group that is outside the PRC.

The Group does not have any present plan to pay any cash dividends on its ordinary shares in the foreseeable future. It intends to retain most of its available funds and any future earnings for use in the operation and expansion of its business. As of December 31, 2016, the Group has not declared any dividends.

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Group’s deferred tax assets and liabilities are as follows:


	As of December 31,
	2015			2016
Current deferred tax assets:
Impairment of loss on long term investments	$	—		$	72
Less: valuation allowance		—			—

Current deferred tax assets, net		—			72

Non-current deferred tax assets:
Advertising expense		2,651			—
Net operating tax losses carry-forward		2,881			2,852
Impairment of on long term investments		—			208
Less: valuation allowance		(5,532	)		(2,852	)

Non-current deferred tax assets, net	$	—		$	208

The Group considers the following factors, among other matters, when determining whether some portion or all of the deferred tax assets will more likely than not be realized: the nature, frequency and severity of losses, forecasts of future profitability, the duration of statutory carry-forward periods, the Group’s experience with tax attributes expiring unused and tax planning alternatives. The Group’s ability to realize deferred tax assets depends on its ability to generate sufficient taxable income within the carry-forward periods provided for in the tax law.

As of December 31, 2016, the tax loss carry-forward for Beijing Momo’s subsidiaries amounted to $105, which would expire on various dates between December 31, 2020 and December 31, 2021. As of December 31, 2016, the tax loss carryforward for Momo HK amounted to $178, which would be carried forward indefinitely and set off against its future taxable profits. As of December 31, 2016, the tax loss carry-forward for Momo US amounted to $7,992, which would be carried forward for twenty years. The Group does not file combined or consolidated tax returns, therefore, losses from individual subsidiaries or the VIE may not be used to offset other subsidiaries’ or VIE’s earnings within the Group. Valuation allowance is considered on each individual subsidiary and legal entity basis. Valuation allowances have been established in respect of certain deferred tax assets as it is considered more likely than not that the relevant deferred tax assets will not be realized in the foreseeable future.

Reconciliation between the expense (benefit) of income taxes computed by applying the PRC tax rate to (loss) income before income taxes and the actual provision for income taxes is as follows:


	For the years ended December 31,
	2014			2015			2016
Net (loss) income before provision for income tax	$	(25,415	)	$	13,419		$	146,915
PRC statutory tax rate		25	%		25	%		25	%
Income tax (benefit) expense at statutory tax rate		(6,354	)		3,355			36,729
Permanent differences		99			(144	)		(75	)
Change in valuation allowance		4,560			(2,315	)		(2,680	)
Effect of income tax rate difference in other jurisdictions		1,695			2,754			7,941
Effect of tax holidays and preferential tax rates		—			(3,558	)		(36,779	)

Provision for income tax	$	—		$	92		$	5,136

No significant unrecognized tax benefit was identified for the years ended December 31, 2014, 2015 and 2016. The Group did not incur any interest and penalties related to potential underpaid income tax expenses and also believed that uncertainty in income taxes did not have a significant impact on the unrecognized tax benefits within next twelve months.

Ordinary Shares

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Ordinary Shares

10.

ORDINARY SHARES

On November 23, 2011, the Company was authorized to issue a maximum 500,000,000 shares of a single class and issued 147,000,000 ordinary shares with a par value of $0.0001.

On April 12, 2012, the authorized 500,000,000 shares were divided into 446,545,450 ordinary shares and 53,454,550 preferred shares in connection with the issuance of Series A-1 and A-2 convertible redeemable participating preferred shares.

In April 2012, the Company’s four founding shareholders entered into an arrangement with the investor in conjunction with the issuance of Series A convertible redeemable participating preferred shares, whereby all of their 147,000,000 ordinary shares (“Founders’ shares”) became subject to service and transfer restrictions. Such Founders’ shares are subject to repurchase by the Company upon early termination of four years of employment of four founders from April 2012. Notwithstanding the foregoing, the Founders shall exercise all rights and privileges of a holder of ordinary shares of the Company with respect to the Founders’ shares. The Founders shall be deemed to be the holder for purposes of receiving any dividends that may be paid with respect to the Founders’ shares and for the purpose of exercising any voting rights relating to the Founders’ shares, even if some or all of Founders’ shares have not yet vested and been released from the repurchase rights. Please refer to Note 12 for disclosure of nonvested restricted shares.

On June 11, 2012, the Company decreased its authorized ordinary shares from 446,545,450 shares to 426,747,470 shares in connection with the issuance of Series A-3 convertible redeemable participating preferred shares.

On July 13, 2012, the Company decreased its authorized ordinary shares from 426,747,470 shares to 366,789,830 shares in connection with the issuance of Series B convertible redeemable participating preferred shares.

On September 12, 2012, a 10-for-1 stock split for all ordinary shares, Series A-1, A-2 and A-3 and Series B convertible redeemable participating preferred shares was approved by the shareholders. While the stock split increased the number of shares for each stockholder, the percentage of their ownership in the Company was not affected. This share split has been retrospectively reflected for all periods presented. In addition, the Company increased its authorized ordinary shares from 366,789,830 to 371,684,330 in connection with the preferred share transfer between investors.

On October 8, 2013, the Company was authorized to issue a maximum 1,000,000,000 shares, which was divided into 835,675,688 ordinary shares and 164,324,312 preferred shares in connection with the issuance of Series C convertible redeemable participating preferred shares.

On April 22, 2014, the Company was authorized to issue a maximum 1,000,000,000 shares, which was divided into 799,281,189 ordinary shares and 200,718,811 preferred shares in connection with the issuance of Series D convertible redeemable participating preferred shares.

On April 22, 2014, certain ordinary shareholders who are also the senior management of the Company donated an aggregate of 15,651,589 ordinary shares to the Company with no consideration. On the same date, the Group declared a special dividend to these shareholders at an aggregated amount of $64,494, among which $58,044 was paid in May 2014. The remaining $5,775 and $675 were recorded as amount due to related parties-current and accrued expenses and other current liabilities respectively, as of December 31, 2016. Please refer to Note 15 for disclosure of related party balances and transactions. The Company treated the whole transaction as a repurchase of ordinary shares of which the repurchase price is considerably lower than the fair value of ordinary share. All such shares were recorded as treasury stock.

On November 28, 2014, the Company was authorized to issue a maximum 1,000,000,000 ordinary shares, which was divided into 800,000,000 Class A Ordinary Shares, 100,000,000 Class B Ordinary Shares and 100,000,000 shares of such class designated as the Board may determine.

On December 16, 2014, the Company completed its IPO and a concurrent private placement upon which the Company’s ordinary shares were divided into Class A ordinary shares and Class B ordinary shares. The Company newly issued 45,688,888 Class A ordinary shares, consisting of (i) 36,800,000 Class A ordinary shares offered through IPO, and (ii) 8,888,888 Class A ordinary shares issued in connection with the concurrent private placement. All of the Company’s Series A, Series B, Series C and Series D preferred shares were automatically converted into 200,718,811 Class A ordinary shares.

In 2015 and 2016, 5,995,293 and 5,197,032 ordinary shares were issued in connection with the exercise of options and vesting of restricted share units previously granted to employees, executives and consultants under the Company’s share incentive plans (see Note 12), respectively.

As of December 31, 2016, there were 292,062,065 Class A ordinary shares and 96,886,370 Class B ordinary shares issued and outstanding, par value $0.0001 per share.

Convertible Redeemable Participating Preferred Shares

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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+ Details

Convertible Redeemable Participating Preferred Shares

12 Months Ended

Dec. 31, 2016

Text Block [Abstract]

11.

CONVERTIBLE REDEEMABLE PARTICIPATING PREFERRED SHARES

On April 12, 2012, the Group entered into the preferred share purchase agreements with a group of investors to issue an aggregate of 53,454,550 convertible redeemable participating preferred shares Series A-1 (“Series A-1”) and convertible redeemable participating preferred shares Series A-2 (“Series A-2”) to a group of investors for an aggregate consideration of $2,100.

On June 11, 2012, the Group entered into the preferred share purchase agreements with a group of investors to issue an aggregate of 19,797,980 convertible redeemable participating preferred shares Series A-3 (“Series A-3”) (Series A-1, Series A-2 and Series A-3 are collectively referred to as “Series A”) to a group of investors for a consideration of $4,000.

On July 13, 2012, the Group entered into the preferred share purchase agreements with a group of investors to issue an aggregate of 55,063,140 convertible redeemable participating preferred shares Series B (“Series B”) to a group of investors for a consideration of $18,006.

In July 2012, the Group redesignated 4,894,500 Series A-1 preferred shares held by an old investor into Series B preferred shares, and the old investor then transferred 4,894,500 Series B preferred shares to a new investor at the purchase price of $0.286 per share for a total consideration of $1,400 in cash. Also in January 2013, the Group redesignated another 10,079,373 Series A-1 preferred shares of the same old investor into Series B preferred shares, and the old investor then transferred 10,079,373 Series B preferred shares to the same new investor at the purchase price of $0.425 per share for a total consideration of $4,280 in cash. The Group did not receive any proceeds for the transfer between the old investor and the new investor, nor receive any consideration for the redesignation for the shares transferred. The Group accounted for such redesignation as an extinguishment of 4,894,500 and 10,079,373 Series A-1 preferred shares repurchased and recorded $1,361 and $2,766 as deem dividend for the years ended December 31, 2012 and 2013, respectively, based on the difference between the fair value of the consideration transferred to the new investor (i.e., fair value of Series B preferred shares) and the carrying amount of such Series A-1 preferred shares.

On October 8, 2013, the Group entered into the preferred share purchase agreements with a group of investors to issue an aggregate of 36,008,642 convertible redeemable participating preferred shares Series C (“Series C”) to a group of investors for a consideration of $45,000.

On April 22, 2014, the Group entered into the preferred share purchase agreements with a group of investors to issue an aggregate of 43,693,356 convertible redeemable participating preferred shares Series D (“Series D”) to a group of investors for a consideration of $211,750.

On April 22, 2014, the Group entered into the agreements to repurchase 7,298,857 shares of Series A-1 preferred shares from one shareholder for a consideration of $30,750, which was paid in May 2014. The repurchase amount of $30,293 is in excess of the carrying amount of such Series A-1 preferred shares as of April 22, 2014 and was considered as deemed dividend to Series A-1 preferred shareholder and recorded in the accumulated deficit. All the preferred shares repurchased were cancelled on the same date.

On December 16, 2014, Series A, Series B, Series C and Series D preferred shares had been automatically converted into 200,718,811 Class A ordinary shares after the closing of IPO.

Key terms of the preferred shares are summarized as follows:

Voting rights

Shareholders of the preferred shares are entitled to the number of votes equal to the number of ordinary shares into which such preferred shares could be converted at the record date.

Dividends

Whenever a dividend is declared by the board of directors of the Company, the preferred shares holders shall receive, in preference to any dividend on any ordinary shares a cumulative dividend in an amount equal to 8% annually of the Original Issue Price, which was defined as $0.04714, $0.13469, $0.20204, $0.327, $1.2497 and $4.84627 per share for Series A-1, A-2, A-3, B, C and D preferred shares, respectively, as adjusted for stock splits, stock dividends, etc., and shall also participate on an as converted basis with respect to any dividends payable to the ordinary shares. The sequence of dividend participating right of all series of preferred shares was as follows:

(1) Series D

(2) Series C

(3) Series B

(4) Series A-3

(5) Series A-1, A-2

Liquidation preference

In the event of any liquidation, dissolution or winding up of the Company, either voluntary or involuntary, distributions to the shareholders of the Company shall be made in the following manners:

(i)

Before any distribution or payment shall be made to the holders of any ordinary shares, Series A preferred shares, Series B preferred shares or Series C preferred shares, each holder of Series D preferred shares shall be entitled to receive an amount equal to one hundred and thirty percent (130%) of the Original Issue Price of Series D preferred shares (adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions), plus all dividends accrued and unpaid with respect thereto (as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions) per Series D preferred share then held by such holder.

(ii)

After distribution or payment in full of the amount distributable or payable pursuant to (i) and before any distribution or payment shall be made to the holders of any ordinary shares, Series A preferred shares or Series B preferred shares, each holder of Series C preferred shares shall be entitled to receive an amount equal to one hundred and thirty percent (130%) of the Original Issue Price of Series C preferred shares (adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions), plus all dividends accrued and unpaid with respect thereto (as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions) per Series C preferred share then held by such holder.

(iii)

After distribution or payment in full of the amount distributable or payable pursuant to (i) and (ii) and before any distribution or payment shall be made to the holders of any ordinary shares or Series A preferred shares, each holder of Series B preferred shares shall be entitled to receive an amount equal to one hundred percent (100%) of the Original Issue Price of Series B (adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions), plus all dividends accrued and unpaid with respect thereto (as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions) per Series B preferred share then held by such holder.

(iv)

After distribution or payment in full of the amount distributable or payable pursuant to (i), (ii) and (iii) and before any distribution or payment shall be made to the holders of any ordinary shares, Series A-1 preferred shares or Series A-2 preferred shares, each holder of Series A-3 preferred shares shall be entitled to receive an amount equal to one hundred percent (100%) of the Original Issue Price of Series A-3 (adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions), plus all dividends accrued and unpaid with respect thereto (as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions) per Series A-3 preferred share then held by such holder.

(v)

After distribution or payment in full of the amount distributable or payable pursuant to (i), (ii), (iii) and (iv) and before any distribution or payment shall be made to the holders of any ordinary shares, each holder of Series A-1 preferred shares and each holder of Series A-2 preferred shares shall be entitled to receive on a pari passu basis an amount equal to one hundred fifty percent (150%) of the Original Issue Price of Series A-1 or the Original Issue Price of Series A-2 (as the case may be) (adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions), plus all dividends accrued and unpaid with respect thereto (as adjusted for any share splits, share dividends, combinations, recapitalizations and similar transactions) per Series A-1 preferred share or Series A-2 preferred share, as the case may be, then held by such holder.

(vi)

After distribution or payment in full of the amount distributable or payable on the preferred shares pursuant to (i), (ii), (iii), (iv) and (v), the remaining assets of the Company available for distribution to shareholders shall first be used to pay any accrued but unpaid dividends on other shares and then be distributed ratably among the holders of outstanding ordinary shares and holders of preferred shares on an as-converted basis.

Redemption

At any time after (i) the fourth (4) anniversary of the closing of the Series D preferred share issuance, each holder of the then outstanding Series D preferred shares, or (ii) October 8, 2017, each holder of the then outstanding Series C preferred shares, or (iii) December 31, 2016, each holder of the then outstanding Series A preferred shares and Series B preferred shares, may require that the Company redeem all of its preferred shares.

The redemption price for each Series A-1 and Series A-2 preferred share shall be equal to a price per preferred share which is one hundred and fifty percent (150%) of the applicable Initial Purchase Price (equal to the applicable Original Issue Price), plus all declared or accrued but unpaid dividends thereon up until the date of redemption (adjusted for any share splits, share dividends, combinations, recapitalizations or similar transactions).

The redemption price for Series A-3, Series B, Series C and Series D preferred shares shall be equal to a price per share which is one hundred and twenty-five percent (125%) of the applicable Initial Purchase Price (equal to the applicable Original Issue Price), plus all declared or accrued but unpaid dividends thereon up until the date of redemption (adjusted for any share splits, share dividends, combinations, recapitalizations or similar transactions).

The Group assesses the probability of redemption and accrues proper accretion over the period from the date of issuance to the earliest redemption date of Series A-1, Series A-2, Series A-3, Series B, Series C and Series D preferred shares using the effective interest rate method.

The Group recognized $57,663, $nil and $nil as deemed dividend on Series A, Series B, Series C and Series D preferred shares accretion of redemption premium for the years ended December 31, 2014, 2015 and 2016, respectively.

Conversion

Each preferred share shall be convertible, at the option of the holder thereof, at any time after the original date of issuance, into such number of fully paid and nonassessable ordinary shares as determined by dividing the applicable Original Issue Price by then-effective conversion price.

The initial conversion ratio was one for one. The conversion price has a standard anti-dilution adjustment term for items such as stock splits and recapitalization. It also has a down-round provision, under which when the Company issues any additional shares at a price per share that is lower than the conversion price per share then in effect, the conversion price per share is adjusted down. There have been no such adjustments to the conversion price.

Each preferred share would automatically be converted into ordinary shares at the then effective conversion price, upon the closing of a Qualified IPO.

“Qualified IPO” means a firm commitment underwritten registered public offering by the Company of its ordinary Shares on the NASDAQ National Market System in the United States or Hong Kong or any other exchange in any other jurisdiction (on any combination of such exchanges and jurisdictions) acceptable to the majority preferred shareholders to the Company with aggregate offering proceeds (before deduction of fees, commissions or expenses) to the Company and selling shareholders, if any, of not less than $50,000 (or any cash proceeds of other currency of equivalent value).

The Company has determined that there was no beneficial conversion feature attributable to the various series of preferred shares because the initial conversion prices was higher than the fair value of the Company’s ordinary shares on issue date of each series shares.

Share-Based Compensation

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

12.

SHARE-BASED COMPENSATION

Share options granted by the Company

In November 2012, the Company adopted a share incentive plan (“2012 Plan”), which was amended in October 2013. The maximum aggregate number of shares which may be issued pursuant to all awards under the 2012 Plan is 44,758,220 ordinary shares.

In November, 2014, the Company adopted the 2014 share incentive plan (“2014 Plan”), pursuant to which a maximum aggregate of 14,031,194 Class A ordinary shares may be issued pursuant to all awards granted thereunder. Starting from 2017, the number of shares reserved for future issuances under the 2014 Plan will be increased by a number equal to 1.5% of the total number of outstanding shares on the last day of the immediately preceding calendar year, or such lesser number of Class A ordinary shares as determined by the Company’s board of directors, on the first day of each calendar year during the term of the 2014 Plan. With the adoption of the 2014 Plan, the Company will no longer grant any incentive shares under the 2012 Plan. The time and condition to exercise options will be determined by the Board or a committee of the Board. The term of the options may not exceed ten years from the date of the grant, except for the situation of amendment, modification and termination. Under the 2014 Plan, share options are subject to vesting schedules ranging from two to four years.

The following table summarizes the option activity for the year ended December 31, 2016:


	Number of options			Weighted average exercise price per option		Weighted average remaining contractual life (years)		Aggregated intrinsic value
Outstanding, December 31, 2015		31,084,006		$	0.0767		8.14	$	246,597

Granted		7,577,122		$	0.0002
Exercised		(5,147,032	)	$	0.0618
Forfeited/cancel		(1,907,630	)	$	0.0226

Outstanding, December 31, 2016		31,606,466		$	0.0641		7.63		288,439

Exercisable at December 31, 2016		15,313,350		$	0.0924		6.76	$	139,314

There were 15,313,350 vested options, and 15,053,681 options expected to vest as of December 31, 2016. For options expected to vest, the weighted-average exercise price was $0.0384 as of December 31, 2016 and aggregate intrinsic value was $133,569, $154,465 and $137,765 as of December 31, 2014, 2015 and 2016, respectively.

The weighted-average grant-date fair value of the share options granted during the years 2014, 2015, and 2016 was $4.9994, $5.9341 and $6.2405, respectively. Total intrinsic value of options exercised for the years ended December 31, 2014, 2015 and 2016 was $nil, $45,885 and $45,581, respectively. The total fair value of options vested during the years ended December 31, 2014, 2015 and 2016 was $1,396, $13,680 and $27,171, respectively.

In May 2015, the Company accelerated the vesting to permit immediate exercise of 235,000 outstanding employee share options granted under the 2012 Plan. The incremental cost resulting from the modification amounted to $162 for the acceleration for the year end of December 31, 2015.

In July 2016, the Company cancelled 187,500 outstanding employee share options granted under the 2014 Plan for one employee. As a result, the Company immediately recognized the unvested compensation cost attributable to the canceled award amounting to $1,532 in 2016.

The fair value of options granted was estimated on the date of grant using the binomial tree pricing model before the Company completed its IPO and the Black-Sholes pricing model after the Company completed its IPO, respectively, with the following assumptions used for grants during the applicable periods:


	Risk-free interest rate of return			Contractual term		Volatility			Dividend yield		Exercise price
2012		2.31	%		10 years		61.7	%		—	$	0.0327
2013		3.09	%		10 years		54.4	%		—	$	0.1404
2014		2.44%~3.25	%		10 years		53.7%~57.5	%		—	$	0.0002~$0.1404
2015		2.15%~2.19	%		10 years		55.3%~55.7	%		—	$	0.0002
2016		1.75%~2.70	%		10 years		52.5%~55.3	%		—	$	0.0002

(1)

Risk-free interest rate

Risk-free interest rate was estimated based on the yield to maturity of China international government bonds with a maturity period close to the expected term of the options.

(2)

Contractual term

The Company used the original contractual term.

(3)

Volatility

The volatility of the underlying ordinary shares during the life of the options was estimated based on the historical stock price volatility of comparable listed companies over a period comparable to the expected term of the options.

(4)

Dividend yield

The dividend yield was estimated by the Group based on its expected dividend policy over the expected term of the options.

(5)

Exercise price

The exercise price of the options was determined by the Group’s board of directors.

(6)

Fair value of underlying ordinary shares

Before the closing of the IPO, the estimated fair value of the ordinary shares underlying the options as of the respective grant dates was determined based on a retrospective valuation, which used management’s best estimate for projected cash flows as of each valuation date. After the closing of the IPO, the fair value of the ordinary shares is determined as the closing sales price of the Shares as quoted on the principal exchange or system.

For employee and executives share options, the Group recorded share-based compensation of $5,848, $16,026 and $28,096 during the years ended December 31, 2014, 2015 and 2016, respectively, based on the fair value on the grant dates over the requisite service period of award according to the vesting schedule for employee share option.

For non-employee share options the Group recorded share-based compensation of $437, $756 and $3,103 during the years ended December 31, 2014, 2015 and 2016, respectively, based on the fair value at the commitment date and recognized over the period the service is provided.

As of December 31, 2016, total unrecognized compensation expense relating to unvested share options was $68,656, which will be recognized over 2.74 years. The weighted-average remaining contractual term of options outstanding is 7.63 years.

Share options granted by Momo BVI

On January 3, 2015, Momo BVI, a wholly-owned subsidiary of the Group, approved Momo BVI Share Incentive Plan that provides for the issuance of not exceeding 30,000,000 share options. The option plan has a term of ten years unless earlier terminated by Momo BVI’s board of directors.

During the year ended December 31, 2015, Momo BVI granted 10,550,000 share options to its employees and executives with exercise prices ranging from $0.10 to $0.11 per share and vesting period of 4 years.

The following table summarizes the option activity for the year ended December 31, 2016:


	Number of options			Weighted average exercise price per option		Weighted average remaining contractual life (years)		Aggregated intrinsic value
Outstanding , December 31, 2015		10,200,000		$	0.1080		9.26	$	20

Granted		—			—
Exercised		—			—
Forfeited		(2,200,000	)	$	0.1055

Outstanding at end of period		8,000,000		$	0.1088		8.19	$	10

Exercisable at December 31, 2016		3,458,333		$	0.1086		8.13	$	5

There were 3,458,333 vested options, and 4,224,375 options expected to vest as of December 31, 2016. For options expected to vest, the weighted-average exercise price is $0.1089 as of December 31, 2016 and aggregate intrinsic value was $nil, $18 and $5 as of December 31, 2014, 2015 and 2016, respectively.

The weighted-average grant-date fair value of the share options granted during the years 2014, 2015, and 2016 was $nil, $0.0544, and $nil, respectively. Total intrinsic value of options exercised for the years ended December 31, 2014, 2015 and 2016 was $nil, $nil and $nil, respectively. The total fair value of options vested during the years ended December 31, 2014, 2015 and 2016 was $nil, $nil and $185, respectively.

The fair value of options granted was estimated on the date of grant using the Black-Sholes pricing model with the following assumptions used for grants during the applicable periods:

Risk-free interest
rate of return

Contractual term

Volatility

Dividend yield

Exercise price

2015

1.55%~1.82

10 years

55.3%~57.2

—

0.10~$0.11

(1)

Risk-free interest rate

Risk-free interest rate was estimated based on the yield to maturity of US government bonds with a maturity period close to the expected term of the options.

(2)

Contractual term

Momo BVI used the original contractual term.

(3)

Volatility

(4)

Dividend yield

The dividend yield was estimated by Momo BVI based on its expected dividend policy over the expected term of the options.

(5)

Exercise price

The exercise price of the options was determined by Momo BVI’s board of directors.

(6)

Fair value of underlying ordinary shares

The estimated fair value of the ordinary shares underlying the options as of the grant date was determined based on a contemporaneous valuation.

For employee and executives share options, Momo BVI recorded share-based compensation of $98 and $112 during the years ended December 31, 2015 and 2016, based on the fair value on the grant dates over the requisite service period of award according to the vesting schedule for employee share option.

As of December 31, 2016, total unrecognized compensation expense relating to unvested share options was $221, which will be recognized over 2.24 years. The weighted-average remaining contractual term of options outstanding is 8.19 years.

Non-vested restricted shares

In April 2012, the Company’s four founding shareholders entered into an arrangement with the investor in conjunction with the issuance of Series A preferred shares, whereby all of their 147,000,000 ordinary shares (“Founders’ shares”) became subject to service and transfer restrictions. Such Founders’ shares are subject to repurchase by the Company upon early termination of their four years of employment. The repurchase price is the par value of the ordinary shares. 25% of the Founders’ shares shall be vested annually. The restricted share agreements were subsequently amended on June 11, 2012 and July 18, 2012, respectively. Pursuant to the agreements, 25% of the Founders’ shares shall vest upon the closing of issuance of Series B preferred shares and the remaining 75% shall be vested monthly in equal installments over the next 36 months. This arrangement has been accounted for as a grant of restricted stock awards subject to service vesting conditions. Because the modification does not affect any of the other terms or conditions of the award, presumably the fair value before and after the modification is the same.

On May 15, 2014, the Company’s four founding shareholders entered into an agreement with the investors to renew the arrangement. The Company considered the amendment of agreement as a modification of vesting of the restricted shares. Pursuant to the agreement, the Company shall be entitled to repurchase 50% and 25% of such shares in the case that founders terminate their employments with the Company before April 17, 2015 and during the period from April 17, 2015 to April 17, 2016, respectively, at a price of US$0.0001 per share or the lowest price permitted under applicable laws. Therefore, the Company considered that 50% of the total restricted shares were vested immediately on the amendment date and 25% shall be vested annually on April 17 in the next two years ending April 17, 2016. Before the modification date, May 15, 2014, there were 131,348,411 ordinary shares, of which 45,937,500 were unvested restricted shares. As the result of modification, 19,736,705 vested ordinary shares were classified to unvested restricted shares on the modification date and the corresponding compensation costs for these unvested restricted shares were amortized over the remaining service period. Because the modification does not affect any of the other terms or conditions of the award, the fair value of the restricted shares before and after the modification is the same.

A summary of non-vested restricted share activity during the years ended December 31, 2014, 2015 and 2016 is presented below:


	Number of shares
Outstanding as of January 1, 2014		58,187,500
Granted		—
Modification		19,736,705
Vested		(20,673,449	)

Outstanding as of December 31, 2014		57,250,756
Granted		—
Forfeited		—
Vested		(28,625,378	)

Outstanding as of December 31, 2015		28,625,378
Granted		—
Forfeited		—
Vested		(28,625,378	)

Outstanding as of December 31, 2016		—

The weighted average grant date fair value of the non-vested restricted shares was $0.01 per share and the aggregated fair value was $1,470. The total fair value of non-vested restricted shares vested during the years ended December 31, 2014, 2015 and 2016 was $9, $286 and $286, respectively.

The Company recorded compensation expense of $335, $180 and $52 during the years ended December 31, 2014, 2015 and 2016, respectively, related to non-vested restricted shares.

As of December 31, 2016, total unrecognized compensation expense relating to the non-vested restricted shares was $nil.

Restricted share units (“RSUs”)

On December 11, 2014, the Company granted a total of 40,001 shares of RSUs to independent directors under the 2014 Plan. The restricted share units will vest in accordance with the vesting schedule set out in the RSUs award agreement, which is 50% of the RSUs shall vest at the end of every six months since the grant date.

On May 17, 2016, the Company granted a total of 200,000 shares of RSUs to independent directors under the 2014 Plan and vesting period of 4 years, which began from December 11, 2015.

The Company will forfeit the unvested portion of the RSUs if the grantees terminate their service during the vesting period.

The fair value of these RSUs is measured on the grant date based on the market price of the ordinary share on the grant date. The following table summarizes information regarding the share units granted:


	Number of shares
Outstanding as of January 1, 2015		40,001
Granted		—
Forfeited		—
Vested		(40,001	)

Outstanding as of December 31, 2015		—
Granted		200,000
Forfeited		—
Vested		(50,000	)

Outstanding as of December 31, 2016		150,000

The weighted-average grant-date fair value of the restricted share units granted during the years 2014, 2015, and 2016 was $8.51, $nil, and $6.50, respectively. Total intrinsic value of the restricted share units exercised for the years ended December 31, 2014, 2015 and 2016 was $nil, $301 and $511, respectively. The total fair value of the restricted share units vested during the years ended December 31, 2014, 2015 and 2016 was $nil, $340 and $325, respectively. The aggregated fair value of RSUs was $340 and $1,299, respectively, for the grant date of December 11, 2014 and May 17, 2016.

The Group recorded share-based compensation of $18, $322 and $343 for RSUs for the years ended December 31, 2014, 2015 and 2016, respectively, based on the fair value on the grant dates over the requisite service period of award using the straight-line method.

As of December 1, 2016, total unrecognized compensation expense relating to unvested RSUs was $956, which will be recognized over 2.95 years. The weighted-average remaining contractual term of RSUs outstanding is 8.94 years.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Net Income (Loss) Per Share

Net Income (Loss) Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

13.

NET INCOME (LOSS) PER SHARE

For the years ended December 31, 2014, 2015 and 2016, the Group has determined that its convertible redeemable participating preferred shares are participating securities as the preferred shares participate in undistributed earnings on an as-if-converted basis. The holders of the preferred shares are entitled to receive dividends on a pro rata basis, as if their shares had been converted into ordinary shares. The Group determined that the nonvested restricted shares are participating securities as the holders of the nonvested restricted shares have a nonforfeitable right to receive dividends with all ordinary shares but the nonvested restricted shares do not have a contractual obligation to fund or otherwise absorb the Company’s losses. Accordingly, the Group uses the two-class method of computing net loss per share, for ordinary shares, nonvested restricted shares and preferred shares according to the participation rights in undistributed earnings.

The calculation of net loss per share is as follows:


	For the years ended December 31,
	2014			2015			2016
Numerator:
Net (loss) income attributable to MomoInc.	$	(25,415	)	$	13,697		$	145,250
Deemed dividend to Series A-1 and Series A-2 shares		(30,910	)		—			—
Deemed dividend to Series A-3 shares		(544	)		—			—
Deemed dividend to Series B shares		(3,116	)		—			—
Deemed dividend to Series C shares		(5,596	)		—			—
Deemed dividend to Series D shares		(17,497	)		—			—
Undistributed earnings allocated to Series A shares		—			—			—
Undistributed earnings allocated to Series B shares		—			—			—
Undistributed earnings allocated to Series C shares		—			—			—
Undistributed earnings allocated to Series D shares		—			—			—
Undistributed earnings allocated to participating nonvested restricted shares		—			(1,339	)		(3,197	)

Net (loss) income attributed to ordinary shareholders for computing net (loss) income per ordinary share-basic and diluted	$	(83,078	)	$	12,358		$	142,053


	For the years ended December 31,
	2014			2015			2016
Denominator:
Denominator for computing net (loss) income per share-basic:
Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic		85,293,775			342,646,282			377,335,923
Weighted average shares used in computing net (loss) income per participating nonvested restricted share		60,951,591			37,118,622			8,493,244
Weighted average shares used in computing net income per Series A-1 and Series A-2 share		32,176,676			—			—
Weighted average shares used in computing net income per Series A-3 Share		18,990,997			—			—
Weighted average shares used in computing net income per Series B share		67,182,243			—			—
Weighted average shares used in computing net income per Series C Share		34,540,898			—			—
Weighted average shares used in computing net income per Series D share		28,348,231			—			—

Denominator for computing net (loss) income per share-diluted:
Weighted average shares outstanding used in computing net (loss) income per ordinary share-diluted		85,293,775			401,396,548	(i)		407,041,165	(ii)

Net (loss) income per ordinary share attributable to Momo Inc. - basic	$	(0.97	)	$	0.04		$	0.38
Net income per participating nonvested restricted share	$	—		$	0.04		$	0.38
Net income per Series A-1 and Series A-2 share	$	0.96		$	—		$	—
Net income per Series A-3 share	$	0.03		$	—		$	—
Net income per Series B share	$	0.05		$	—		$	—
Net income per Series C share	$	0.16		$	—		$	—
Net income per Series D share	$	0.62		$	—		$	—

Net (loss) income per ordinary share attributable to Momo Inc. - diluted	$	(0.97	)	$	0.03		$	0.36

The following table summarizes potential ordinary shares outstanding excluded from the computation of diluted net loss or income per ordinary share for the years ended December 31, 2014, 2015 and 2016, because their effect is anti-dilutive:


	For the years ended December 31,
	2014		2015		2016
Share issuable upon exercise of share options		21,831,082		904,489		152,500
Share issuable upon exercise of RSUs		—		15,001		50,000
Share issuable upon vesting of nonvested restricted shares		60,951,591		—		—
Share issuable upon conversion of Series A-1 and Series A-2 shares		32,176,676		—		—
Share issuable upon conversion of Series A-3 shares		18,990,997		—		—
Share issuable upon conversion of Series B shares		67,182,243		—		—
Share issuable upon conversion of Series C shares		34,540,898		—		—
Share issuable upon conversion of Series D shares		28,348,231		—		—

(i)

For the year 2015, an incremental weighted average number of 35,759,066 nonvested restricted shares and an incremental weighted average number of 22,991,200 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included.

(ii)

For the year 2016, an incremental weighted average number of 7,155,060 nonvested restricted shares and an incremental weighted average number of 22,550,182 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

14.

COMMITMENTS AND CONTINGENCIES

Lease commitment

The Group leases certain office premises under non-cancellable leases. These leases expire through 2019 and are renewable upon negotiation. Rental expenses under operating leases for the years ended December 31, 2014, 2015 and 2016 were $2,995, $3,715 and $4,743, respectively.

Future minimum payments under non-cancellable operating leases as of December 31, 2016 were as follows:


2017	$	5,547
2018		2,644
2019		360
2020		296

Total	$	8,847

Investment commitments

The Group was obligated to subscribe $2,702 and $2,942 for partnership interest and equity interest of certain long-term investees under various arrangements as of December 31, 2015 and 2016, respectively.

Contingencies

On October 22, 2015, the Group was served a civil complaint by Guangzhou Tian He People’s Court in which the plaintiff claimed that Xiaoyao Xiyou, a game that the Group operated and currently operates, infringed upon the plaintiff’s copyright in works of literature and art of a game, constituting unfair competition. The plaintiff demanded that the Group to cease the infringement and pay compensation and legal costs totalling approximately $1,440. The trail was began proceeding in 2016. The next court hearing date was not determined as of December 31, 2016.

The Group believes the claim made by the plaintiff is without merit, and the Group intends to defend vigorously in the case. Although the outcome of litigation is inherently uncertain, the Group does not believe the possibility of loss is probable. The Group is unable to estimate a range of loss, if any, that could result if there would be an adverse final decision, and the Group has not accrued a liability for the matter.

Related Party Balances and Transactions

12 Months Ended

Dec. 31, 2016

Related Party Balances and Transactions

15.

RELATED PARTY BALANCES AND TRANSACTIONS


Name of the related party		Relationship with the Group
Hangzhou Alimama Technology Co., Ltd.		Affiliates of a Major Shareholder
Guangzhou UC Network Technology Co., Ltd.		Affiliates of a Major Shareholder
Guangzhou Aijiuyou Informational Technology Co., Ltd.		Affiliates of a Major Shareholder
Alibaba Cloud Computing Ltd.		Affiliates of a Major Shareholder
Taobao (China) Software Co., Ltd		Affiliates of a Major Shareholder
Zhejiang Tmall Technology Co., Ltd.		Affiliates of a Major Shareholder
Shanghai Touch Future Network Technology Co., Ltd.		Equity method investment
Hunan Qindao Cultural Spread Ltd.		Available-for-sale investment
Shanghai Xisue Network Technology Co., Ltd.		Affiliate of an available-for-sale investment

(1)

Amount due from related parties-current


	As of December 31,
	2015		2016
Hangzhou Alimama Technology Co., Ltd.	$	876	$	2
Shanghai Touch Future
Network Technology Co., Ltd.		299		—
Guangzhou UC Network Technology Co., Ltd.		—		5
Guangzhou Aijiuyou Informational
Technology Co., Ltd.		—		81

Total	$	1,175	$	88

(2)

Amount due to related parties - current


	As of December 31,
	2015		2016
Amount due to ordinary shareholders (i)	$	6,450	$	5,862
Hunan Qindao Cultural Spread Ltd.		—		1,281
Alibaba Cloud Computing Ltd.		82		629
Shanghai Touch Future Network Technology Co., Ltd.		—		229
Taobao (China) Software Co., Ltd.		—		116

Total	$	6,532	$	8,117

(i)

The amounts of $6,450 and $5,775 as of December 31, 2015 and 2016 represent the unpaid repurchase amount by the Group to its ordinary shareholders. Please refer to Note 10 for repurchase of ordinary shares.

(3)

Sales to related parties


	For the years ended December 31,
	2014		2015		2016
Shanghai Xisue Network Technology Co., Ltd. (ii)	$	—	$	—	$	922
Zhejiang Tmall Technology Co., Ltd. (ii)		—		—		820
Guangzhou Aijiuyou Informational Technology Co., Ltd. (iii)		—		—		400
Taobao (China) Software Co., Ltd. (ii)		—		—		249
Hangzhou Alimama Technology Co., Ltd. (ii)		—		6,002		42
Guangzhou UC Network Technology Co., Ltd. (iii)		—		—		9

Total	$	—	$	6,002	$	2,442

(ii)

The sales to related parties represented mobile marketing services provided.

(iii)

The sales to related parties represented mobile game revenue generated through those game operating companies.

(4)

Purchase from related parties


	For the years ended December 31,
	2014		2015		2016
Hunan Qindao Cultural Spread Ltd. (iv)	$	—	$	—	$	3,929
Alibaba Cloud Computing Ltd. (v)		—		322		3,360
Shanghai Touch future Network Technology Co., Ltd.		—		—		347
Taobao (China) Software Co., Ltd.		—		—		323

Total	$	—	$	322	$	7,959

(iv)

The purchase from Hunan Qindao Cultural Spread Ltd. is the revenue sharing with broadcaster agencies of live video service.

(v)

The purchase from Alibaba Cloud Computing Ltd. is mainly related to its cloud computing services.

Segment Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information

16.

SEGMENT INFORMATION

The Group’s chief operating decision maker has been identified as the Chief Executive Officer (“CEO”), who reviews consolidated results when making decisions about allocating resources and assessing performance of the Group. The Group’s revenue and net income are substantially derived from live video service, value-added services, mobile marketing services, mobile games and other services. The Group does not have discrete financial information of costs and expenses between various services in its internal reporting, and reports costs and expenses by nature as a whole. Therefore, the Group has one operating segment.

The table below is only presented at the revenue level with no allocations of direct or indirect cost and expenses. The Group operates in the PRC; most of the Group’s long-lived assets are located in the PRC and all services are provided in the PRC.

Components of revenues are presented in the following table:


	For the years ended December 31,
	2014		2015		2016
Live video service	$	—	$	1,231	$	376,925
Value-added service		29,756		58,462		67,603
Mobile marketing		1,975		38,885		66,339
Mobile games		11,237		31,082		35,453
Other services		1,787		4,328		6,778

Total	$	44,755	$	133,988	$	553,098

Compensation and Retirement Disclosure [Abstract]

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Employee Benefit Plan

12 Months Ended

Dec. 31, 2016

Employee Benefit Plan

17.

EMPLOYEE BENEFIT PLAN

Full time employees of the Group in the PRC participate in a government-mandated defined contribution plan pursuant to which certain pension benefits, medical care, unemployment insurance, employee housing fund and other welfare benefits are provided to employees. The Group accrues for these benefits based on certain percentages of the employees’ salaries. The total provisions for such employee benefits were $2,635, $6,487 and $9,081 for the years ended December 31, 2014, 2015 and 2016, respectively.

Statutory Reserves and Restricted Net Assets

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Statutory Reserves and Restricted Net Assets

18.

STATUTORY RESERVES AND RESTRICTED NET ASSETS

In accordance with the Regulations on Enterprises with Foreign Investment of China and their articles of association, the Group’s subsidiaries and VIE located in the PRC, being foreign invested enterprises established in the PRC, are required to provide for certain statutory reserves. These statutory reserve funds include one or more of the following: (i) a general reserve, (ii) an enterprise expansion fund or discretionary reserve fund, and (iii) a staff bonus and welfare fund. Subject to certain cumulative limits, the general reserve fund requires a minimum annual appropriation of 10% of after-tax profit (as determined under accounting principles generally accepted in China at each year-end); the other fund appropriations are at the subsidiaries’ or the affiliated PRC entities’ discretion. These statutory reserve funds can only be used for specific purposes of enterprise expansion, staff bonus and welfare, and are not distributable as cash dividends except in the event of liquidation of our subsidiaries, our affiliated PRC entities and their respective subsidiaries. The Group’s subsidiaries and VIE are required to allocate at least 10% of their after tax profits to the general reserve until such reserve has reached 50% of their respective registered capital.

Appropriations to the enterprise expansion reserve and the staff welfare and bonus reserve are to be made at the discretion of the board of directors of each of the Group’s subsidiaries.

The appropriations to these reserves by the Group’s PRC subsidiary, VIE and VIE’s subsidiaries were $nil, $553 and $17,969 for the years ended December 31, 2014, 2015 and 2016.

Relevant PRC laws and regulations restrict the WFOE, VIE and VIE’s subsidiaries from transferring a portion of their net assets, equivalent to the balance of their statutory reserves and their paid in capital, to the Company in the form of loans, advances or cash dividends. The WFOE’s accumulated profits may be distributed as dividends to the Company without the consent of a third party. The VIE and VIE’s subsidiaries’ revenues and accumulated profits may be transferred to the Company through contractual arrangements without the consent of a third party. Under applicable PRC law, loans from PRC companies to their offshore affiliated entities require governmental approval, and advances by PRC companies to their offshore affiliated entities must be supported by bona fide business transactions. The capital and statutory reserves restricted which represented the amount of net assets of the Group’s PRC subsidiary, VIE and VIE’s subsidiaries in the Group not available for distribution were $93,537, $91,008 and $108,977 as of December 31, 2014, 2015 and 2016, respectively.

Subsequent Events

12 Months Ended

Dec. 31, 2016

Subsequent Events [Abstract]

Subsequent Events

19.

SUBSEQUENT EVENTS

New acquisition

In February 2017, the Group entered into an agreement to acquire 100% equity interest of Zhejiang Digital Network Technology Co., Ltd to develop live video service business. The total cash consideration is $5,478, of which $4,760 has been paid. The acquisition was completed on March, 31, 2017. The Group is in the process of evaluating the accounting treatment on this acquisition.

Newly issued share options

In March 2017, the Company granted 2,217,004 share options to its executives with an exercise price of $0.0002 per share and 100,000 RSUs to its independent directors, with the vesting period of 4 years. The Group is in the process of finalizing the fair value assessment.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Basis of presentation

The consolidated financial statements of the Group have been prepared in accordance with the accounting principles generally accepted in the United States of America (“U.S. GAAP”).

Basis of consolidation

Use of estimates

Cash and cash equivalents

Term deposits

Term deposits consist of bank deposits with an original maturity of over three months.

Accounts receivable

Financial instruments

Foreign currency risk

Cost method investments

Available-for-sale Investments

An impairment change is recorded if the carrying amount of the investment exceeds its fair value and this condition is determined to be other-than-temporary.

Property and equipment, net

Property and equipment are stated at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the following estimated useful lives:


Office equipment			3-5 years
Computer equipment			3 years
Vehicles			5 years
Leasehold improvement			Shorter of the lease term or estimated useful lives

Impairment of long-lived assets

Fair value

Level 1

Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.

Level 2

Level 3

Level 3 applies to assets or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement of the fair value of the assets or liabilities.

Revenue recognition

(a)

Live video service

Net revenues of $nil, $1,231 and $376,925 were recognized for live video services for the years ended December 31, 2014, 2015 and 2016, respectively.

(b)

Value-added services

Net revenues of $29,756, $58,462 and $67,603 were recognized for value-added services for the years ended December 31, 2014, 2015 and 2016, respectively.

(c)

Mobile marketing

The Group provides advertising and marketing solutions to customers for promotion of their brands and conduction of effective marketing activities through its mobile application.

Display-based mobile marketing services

Performance-based mobile marketing services

The Group’s revenue transactions are based on standard business terms and conditions, which are recognized net of agency rebates, if applicable.

Net revenues of $1,975, $38,885 and $66,339 were recognized for mobile marketing for the years ended December 31, 2014, 2015 and 2016, respectively.

(d)

Mobile games

The Group publishes both licensed mobile games developed by third-party game developers and its self-developed games to the game players through its mobile application.

Licensed mobile games

Licensed mobile games - Non-exclusive mobile games services

Licensed mobile games - Exclusive mobile games services

Self-developed mobile game

Net revenues of $11,237, $31,082 and $35,453 were recognized for mobile games for the years ended December 31, 2014, 2015 and 2016, respectively.

(e)

Other service

Other service primarily includes Duobao service and paid emoticons.

Advertising barter transactions

Deferred revenue

Cost of revenues

Government subsidies

Research and development expenses

Value added taxes ("VAT")

Value added taxes (“VAT”)

Income taxes

Foreign currency translation

Operating leases

Advertising expenses

Comprehensive (loss) income

Share-based compensation

Share awards issued to consultants are measured at fair value at the earlier of the commitment date or the date the services are completed and recognized over the period the services are provided.

Earnings (loss) per share

Recent accounting pronouncements not yet adopted

•

Step 1: Identify the contract (s) with a customer.

•

Step 2: Identify the performance obligations in the contract.

•

Step 3: Determine the transaction price.

•

Step 4: Allocate the transaction price to the performance obligations in the contract.

•

Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.

The Group is in the process of evaluating the impact of adoption of this guidance on its consolidated financial statements.

In November, 2015, the FASB issued a new pronouncement ASU 2015-17 which changes how deferred taxes are classified on organizations’ balance sheets.

The new guidance makes targeted improvements to existing U.S. GAAP by:

•

Requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes;

•

Eliminating the requirement to disclose the fair value of financial instruments measured at amortized cost for organizations that are not public business entities;

•

Accounts Receivable [Member]

Concentration of credit risk and revenue

Concentration of credit risk

Third-party application stores and other payment channels accounting for 10% or more of accounts receivables are as follows:


	As of December 31,
	2015			2016
A		31	%		40	%
B		8	%		22	%
C		1	%		15	%

No user or advertising customer accounted for 10% or more of accounts receivables for the years ended December 31, 2015 and 2016, respectively.

Revenues [Member]

Concentration of credit risk and revenue

Concentration of revenue

The following table summarizes sales generated from games that individually accounting for 10% or more of net revenues:


	For the years ended December 31,
	2014			2015			2016
Game D		14	%		2	%		less than 1	%

No user or advertising customer accounted for 10% or more of net revenues for the years ended December 31, 2014, 2015 and 2016, respectively.

Organization and Principal Activities (Tables)

12 Months Ended

Dec. 31, 2016

Text Block [Abstract]

Schedule of Subsidiaries, VIE and VIE's Subsidiaries

As of December 31, 2016, details of the Company’s subsidiaries, VIE and VIE’s subsidiaries are as follows:

Date of
incorporation

Place of
incorporation

Percentage
of economic
ownership

Subsidiaries

Momo Technology HK Company Limited (“Momo HK”)

December 5, 2011

Hong Kong

100

Beijing Momo Information Technology Co., Ltd. (“Beijing Momo IT”)

March 9, 2012

PRC

100

Momo Technology Overseas Holding Company Limited (“Momo BVI”)

March 5, 2014

BVI

100

Momo Information Technologies Corp. (“Momo US”)

March 7, 2014

100

VIE

Beijing Momo Technology Co., Ltd. (“Beijing Momo”)

July 7, 2011

PRC

N/A

VIE’s subsidiaries

Chengdu Momo Technology Co., Ltd. (“Chengdu Momo”)

May 9, 2013

PRC

N/A

Shanghai Momo Technology Co., Ltd. (“Shanghai Momo”)

January 19, 2015

PRC

N/A

Chengdu Biyou Technology Co., Ltd. (“Chengdu Biyou”)

October 16, 2015

PRC

N/A

Tianjin Heer Technology co., ltd (“Tianjin Heer”)

March 7, 2016

PRC

N/A

Momo Pictures Co., Ltd.

November 11, 2016

PRC

N/A

QOOL Media (Tianjin) Co., Ltd

November 16, 2016

PRC

N/A

*	These entities are controlled by the Company pursuant to the contractual arrangements disclosed below.

Schedule of Amounts and Balances of VIE Included in Consolidated Financial Statements After Elimination of Intercompany Balances and Transactions


	As of December 31,
	2015		2016
Cash and cash equivalents	$	60,526	$	36,855
Accounts receivable, net of allowance for doubtful accounts of $nil and $nil as of December 31, 2015 and 2016, respectively		14,896		36,078
Amount due from related parties		1,175		88
Prepaid expenses and other current assets		9,495		20,613
Deferred tax assets, current		—		72

Total current assets		86,092		93,706

Property and equipment, net		1,538		1,854
Rental deposits		244		325
Other non-current assets		—		2,593
Long term investments		19,318		26,541
Deferred tax assets, non-current		—		208

Total assets		107,192		125,227

Accounts payable		9,040		36,812
Deferred revenue		28,274		41,277
Accrued expenses and other current liabilities		1,954		6,632
Amounts due to related parties		—		1,510
Income tax payable		—		3,881

Total current liabilities		39,268		90,112

Total liabilities	$	39,268	$	90,112


	For the years ended December 31,
	2014			2015			2016
Net revenues	$	44,755		$	133,988		$	553,098
Net income	$	32,945		$	118,404		$	340,366
Net cash provided by operating activities	$	40,383		$	124,786		$	360,433
Net cash used in investing activities	$	(1,921	)	$	(19,435	)	$	(11,027	)
Net cash used in financing activities	$	—		$	—		$	—

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

Accounts Receivable [Member]

Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Estimated Useful Lives

Depreciation is calculated on a straight-line basis over the following estimated useful lives:


Office equipment			3-5 years
Computer equipment			3 years
Vehicles			5 years
Leasehold improvement			Shorter of the lease term or estimated useful lives

Schedules of Concentration of Risk, by Risk Factor

Third-party application stores and other payment channels accounting for 10% or more of accounts receivables are as follows:


	As of December 31,
	2015			2016
A		31	%		40	%
B		8	%		22	%
C		1	%		15	%

Revenues [Member]

Schedules of Concentration of Risk, by Risk Factor

The following table summarizes sales generated from games that individually accounting for 10% or more of net revenues:


	For the years ended December 31,
	2014			2015			2016
Game D		14	%		2	%		less than 1	%

Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Schedule of Accounts Receivable, Net

Accounts receivable, net consisted of the following:


	As of December 31,
	2015		2016
Accounts receivable	$	14,896	$	36,078
Less: allowance for doubtful accounts		—		—

Accounts receivable, net	$	14,896	$	36,078

Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2016

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:


	As of December 31,
	2015		2016
Advance to advertisement suppliers	$	296	$	5,331
Customer advance at a third-party payment channel (i)		—		4,845
Interest receivable		5,412		4,821
Deferred platform commission cost		2,424		4,571
Input VAT (ii)		3,485		2,968
Prepaid income tax and other expenses		1,620		2,964
Game promotions fees paid on behalf of game developers		—		2,250
Advance to game developers		4,200		1,550
Others		860		3,292

	$	18,297	$	32,592

(i)

Customer advance at a third party payment channel is the cash deposited in a third party payment channel by the Group for the broadcasters to withdraw their revenue sharing.

(ii)

Long Term Investments (Tables)

12 Months Ended

Dec. 31, 2016

Investments Schedule [Abstract]

Summary of Equity and Cost Method Investments


	As of December 31,
	2015		2016
Equity method investments
Jingwei Chuangteng (Hangzhou) L.P. (i)	$	3,836	$	4,191
Beijing Autobot Venture Capital L.P. (ii)		4,898		6,736
Hangzhou Aqua Ventures Investment Management L.P. (iii)		7,632		9,187
Hunan Qindao Cultural Spread Ltd. (viii)		—		2,016
Others (iv)		1,060		702

Cost method investments
Zya, Inc. (v)		—		1,005
Others (vi)		1,892		829

Available-for-sale investments
Xish International Limited (vii)		—		4,386
Hunan Qindao Cultural Spread Ltd. (viii)		—		2,880

	$	19,318	$	31,932

Equity method investments

(i)

(ii)

(iii)

(iv)

Cost method investments

(v)

(vi)

Available-for-sale investments

(vii)

(viii)

Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following:


	As of December 31,
	2015			2016
Computer equipment	$	20,177		$	23,763
Office equipment		3,073			4,370
Vehicles		34			31
Leasehold improvement		2,914			2,800
Less: accumulated depreciation		(10,440	)		(18,844	)
Exchange difference		501			1,812

		$16,259		$	13,932

Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Payables and Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:


	As of December 31,
	2015		2016
Accrued payroll and welfare	$	7,406	$	18,982
Payable for advertisement		2,718		9,871
Other tax payables		1,517		4,694
VAT payable		550		1,919
Accrued professional services fee		1,506		1,438
Payable to employees for exercise of share options		11,297		—
Others		1,700		3,061

Total	$	26,694	$	39,965

Fair Value (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on Recurring Basis


	Fair Value Measurement as of December 31,
Description	2016		Quoted Prices in Active Market for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
			(Level 1)		(Level 2)		(Level 3)
Cash and cash equivalents	$	257,564	$	257,564		—	$	—
Available-for-sale investments		7,266		—		—		7,266

Total	$	264,830	$	257,564		—	$	7,266

Schedule of Reconciliation of Fair Value Measurement of Available-for-Sale Investments Using Significant Unobservable Inputs on a Recurring Basis

Additional information about the reconciliation of the fair value measurement of available-for-sale investments using significant unobservable inputs (level 3) on a recurring basis are is as follows:


Balance as of December 31, 2015	$	—
Purchase		12,001
Other-than-temporary loss recognized		(4,614	)
Foreign exchange difference		(121	)

Balance as of December 31, 2016	$	7,266

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Components of Group's Deferred Tax Assets and Liabilities

Significant components of the Group’s deferred tax assets and liabilities are as follows:


	As of December 31,
	2015			2016
Current deferred tax assets:
Impairment of loss on long term investments	$	—		$	72
Less: valuation allowance		—			—

Current deferred tax assets, net		—			72

Non-current deferred tax assets:
Advertising expense		2,651			—
Net operating tax losses carry-forward		2,881			2,852
Impairment of on long term investments		—			208
Less: valuation allowance		(5,532	)		(2,852	)

Non-current deferred tax assets, net	$	—		$	208

Schedule of Reconciliation between Income Taxes Expense (Benefit) to (Loss) Income before Income Taxes and Actual Provision for Income Taxes

Reconciliation between the expense (benefit) of income taxes computed by applying the PRC tax rate to (loss) income before income taxes and the actual provision for income taxes is as follows:


	For the years ended December 31,
	2014			2015			2016
Net (loss) income before provision for income tax	$	(25,415	)	$	13,419		$	146,915
PRC statutory tax rate		25	%		25	%		25	%
Income tax (benefit) expense at statutory tax rate		(6,354	)		3,355			36,729
Permanent differences		99			(144	)		(75	)
Change in valuation allowance		4,560			(2,315	)		(2,680	)
Effect of income tax rate difference in other jurisdictions		1,695			2,754			7,941
Effect of tax holidays and preferential tax rates		—			(3,558	)		(36,779	)

Provision for income tax	$	—		$	92		$	5,136

Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Summary of Non-Vested Restricted Share Activity

A summary of non-vested restricted share activity during the years ended December 31, 2014, 2015 and 2016 is presented below:


	Number of shares
Outstanding as of January 1, 2014		58,187,500
Granted		—
Modification		19,736,705
Vested		(20,673,449	)

Outstanding as of December 31, 2014		57,250,756
Granted		—
Forfeited		—
Vested		(28,625,378	)

Outstanding as of December 31, 2015		28,625,378
Granted		—
Forfeited		—
Vested		(28,625,378	)

Outstanding as of December 31, 2016		—

Summary of Restricted Share Units Granted

The following table summarizes information regarding the share units granted:


	Number of shares
Outstanding as of January 1, 2015		40,001
Granted		—
Forfeited		—
Vested		(40,001	)

Outstanding as of December 31, 2015		—
Granted		200,000
Forfeited		—
Vested		(50,000	)

Outstanding as of December 31, 2016		150,000

Company Share Incentive Plan [Member]

Summary of Option Activity

The following table summarizes the option activity for the year ended December 31, 2016:


	Number of options			Weighted average exercise price per option		Weighted average remaining contractual life (years)		Aggregated intrinsic value
Outstanding, December 31, 2015		31,084,006		$	0.0767		8.14	$	246,597

Granted		7,577,122		$	0.0002
Exercised		(5,147,032	)	$	0.0618
Forfeited/cancel		(1,907,630	)	$	0.0226

Outstanding, December 31, 2016		31,606,466		$	0.0641		7.63		288,439

Exercisable at December 31, 2016		15,313,350		$	0.0924		6.76	$	139,314

Schedule of Assumptions Used to Estimate Fair Value of Stock Options Granted


	Risk-free interest rate of return			Contractual term		Volatility			Dividend yield		Exercise price
2012		2.31	%		10 years		61.7	%		—	$	0.0327
2013		3.09	%		10 years		54.4	%		—	$	0.1404
2014		2.44%~3.25	%		10 years		53.7%~57.5	%		—	$	0.0002~$0.1404
2015		2.15%~2.19	%		10 years		55.3%~55.7	%		—	$	0.0002
2016		1.75%~2.70	%		10 years		52.5%~55.3	%		—	$	0.0002

Momo BVI Share Incentive Plan [Member]

Summary of Option Activity

The following table summarizes the option activity for the year ended December 31, 2016:


	Number of options			Weighted average exercise price per option		Weighted average remaining contractual life (years)		Aggregated intrinsic value
Outstanding , December 31, 2015		10,200,000		$	0.1080		9.26	$	20

Granted		—			—
Exercised		—			—
Forfeited		(2,200,000	)	$	0.1055

Outstanding at end of period		8,000,000		$	0.1088		8.19	$	10

Exercisable at December 31, 2016		3,458,333		$	0.1086		8.13	$	5

Schedule of Assumptions Used to Estimate Fair Value of Stock Options Granted

The fair value of options granted was estimated on the date of grant using the Black-Sholes pricing model with the following assumptions used for grants during the applicable periods:

Risk-free interest
rate of return

Contractual term

Volatility

Dividend yield

Exercise price

2015

1.55%~1.82

10 years

55.3%~57.2

—

0.10~$0.11

Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Calculation of Net Loss Per Share

The calculation of net loss per share is as follows:


	For the years ended December 31,
	2014			2015			2016
Numerator:
Net (loss) income attributable to MomoInc.	$	(25,415	)	$	13,697		$	145,250
Deemed dividend to Series A-1 and Series A-2 shares		(30,910	)		—			—
Deemed dividend to Series A-3 shares		(544	)		—			—
Deemed dividend to Series B shares		(3,116	)		—			—
Deemed dividend to Series C shares		(5,596	)		—			—
Deemed dividend to Series D shares		(17,497	)		—			—
Undistributed earnings allocated to Series A shares		—			—			—
Undistributed earnings allocated to Series B shares		—			—			—
Undistributed earnings allocated to Series C shares		—			—			—
Undistributed earnings allocated to Series D shares		—			—			—
Undistributed earnings allocated to participating nonvested restricted shares		—			(1,339	)		(3,197	)

Net (loss) income attributed to ordinary shareholders for computing net (loss) income per ordinary share-basic and diluted	$	(83,078	)	$	12,358		$	142,053


	For the years ended December 31,
	2014			2015			2016
Denominator:
Denominator for computing net (loss) income per share-basic:
Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic		85,293,775			342,646,282			377,335,923
Weighted average shares used in computing net (loss) income per participating nonvested restricted share		60,951,591			37,118,622			8,493,244
Weighted average shares used in computing net income per Series A-1 and Series A-2 share		32,176,676			—			—
Weighted average shares used in computing net income per Series A-3 Share		18,990,997			—			—
Weighted average shares used in computing net income per Series B share		67,182,243			—			—
Weighted average shares used in computing net income per Series C Share		34,540,898			—			—
Weighted average shares used in computing net income per Series D share		28,348,231			—			—

Denominator for computing net (loss) income per share-diluted:
Weighted average shares outstanding used in computing net (loss) income per ordinary share-diluted		85,293,775			401,396,548	(i)		407,041,165	(ii)

Net (loss) income per ordinary share attributable to Momo Inc. - basic	$	(0.97	)	$	0.04		$	0.38
Net income per participating nonvested restricted share	$	—		$	0.04		$	0.38
Net income per Series A-1 and Series A-2 share	$	0.96		$	—		$	—
Net income per Series A-3 share	$	0.03		$	—		$	—
Net income per Series B share	$	0.05		$	—		$	—
Net income per Series C share	$	0.16		$	—		$	—
Net income per Series D share	$	0.62		$	—		$	—

Net (loss) income per ordinary share attributable to Momo Inc. - diluted	$	(0.97	)	$	0.03		$	0.36

(i)

(ii)

Summary of Potential Ordinary Shares Outstanding Excluded from Computation of Diluted Net Loss Per Ordinary Share


	For the years ended December 31,
	2014		2015		2016
Share issuable upon exercise of share options		21,831,082		904,489		152,500
Share issuable upon exercise of RSUs		—		15,001		50,000
Share issuable upon vesting of nonvested restricted shares		60,951,591		—		—
Share issuable upon conversion of Series A-1 and Series A-2 shares		32,176,676		—		—
Share issuable upon conversion of Series A-3 shares		18,990,997		—		—
Share issuable upon conversion of Series B shares		67,182,243		—		—
Share issuable upon conversion of Series C shares		34,540,898		—		—
Share issuable upon conversion of Series D shares		28,348,231		—		—

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Payments under Non-Cancellable Operating Leases

Future minimum payments under non-cancellable operating leases as of December 31, 2016 were as follows:


2017	$	5,547
2018		2,644
2019		360
2020		296

Total	$	8,847

Related Party Balances and Transactions (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Related Party Transactions

(1)

Amount due from related parties-current


	As of December 31,
	2015		2016
Hangzhou Alimama Technology Co., Ltd.	$	876	$	2
Shanghai Touch Future
Network Technology Co., Ltd.		299		—
Guangzhou UC Network Technology Co., Ltd.		—		5
Guangzhou Aijiuyou Informational
Technology Co., Ltd.		—		81

Total	$	1,175	$	88

(2)

Amount due to related parties - current


	As of December 31,
	2015		2016
Amount due to ordinary shareholders (i)	$	6,450	$	5,862
Hunan Qindao Cultural Spread Ltd.		—		1,281
Alibaba Cloud Computing Ltd.		82		629
Shanghai Touch Future Network Technology Co., Ltd.		—		229
Taobao (China) Software Co., Ltd.		—		116

Total	$	6,532	$	8,117

(i)

(3)

Sales to related parties


	For the years ended December 31,
	2014		2015		2016
Shanghai Xisue Network Technology Co., Ltd. (ii)	$	—	$	—	$	922
Zhejiang Tmall Technology Co., Ltd. (ii)		—		—		820
Guangzhou Aijiuyou Informational Technology Co., Ltd. (iii)		—		—		400
Taobao (China) Software Co., Ltd. (ii)		—		—		249
Hangzhou Alimama Technology Co., Ltd. (ii)		—		6,002		42
Guangzhou UC Network Technology Co., Ltd. (iii)		—		—		9

Total	$	—	$	6,002	$	2,442

(ii)

The sales to related parties represented mobile marketing services provided.

(iii)

The sales to related parties represented mobile game revenue generated through those game operating companies.

(4)

Purchase from related parties


	For the years ended December 31,
	2014		2015		2016
Hunan Qindao Cultural Spread Ltd. (iv)	$	—	$	—	$	3,929
Alibaba Cloud Computing Ltd. (v)		—		322		3,360
Shanghai Touch future Network Technology Co., Ltd.		—		—		347
Taobao (China) Software Co., Ltd.		—		—		323

Total	$	—	$	322	$	7,959

(iv)

The purchase from Hunan Qindao Cultural Spread Ltd. is the revenue sharing with broadcaster agencies of live video service.

(v)

The purchase from Alibaba Cloud Computing Ltd. is mainly related to its cloud computing services.

Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Components of Revenues

Components of revenues are presented in the following table:


	For the years ended December 31,
	2014		2015		2016
Live video service	$	—	$	1,231	$	376,925
Value-added service		29,756		58,462		67,603
Mobile marketing		1,975		38,885		66,339
Mobile games		11,237		31,082		35,453
Other services		1,787		4,328		6,778

Total	$	44,755	$	133,988	$	553,098

Organization and Principal Activities - Additional Information (Detail)
$ in Thousands

1 Months Ended

12 Months Ended

Dec. 16, 2014

Jul. 07, 2011

May 31, 2016

Dec. 31, 2014

Aug. 31, 2014

Dec. 31, 2016

USD ($)

asset_group

related_party

Term

Dec. 31, 2016

CNY (¥)

asset_group

related_party

Term

Dec. 31, 2015

USD ($)

Dec. 31, 2014

USD ($)

Nov. 23, 2011

USD ($)

Ordinary shares conversion basis

Nov. 23, 2011

Share capital | $

$ 15

Each Class B ordinary share is convertible into one Class A ordinary share at any time by the holder thereof, while Class A ordinary shares are not convertible to Class B ordinary shares under any circumstances.

Percentage of VIEs revenues to the consolidated net revenues

5,197,032

5,995,293

100.00%

Percentage of VIEs assets to the consolidated total assets

16.30%

19.80%

Percentage of VIEs liability to the consolidated total liabilities

66.40%

53.20%

Number of consolidated VIE's assets that are collateral for the VIE's obligations | asset_group

VIEs creditors having recourse to general credit of the Company | related_party

Number of terms under arrangement with VIEs to provide financial support | Term

Class A Common Stock [Member]

Ordinary shares, voting rights

One vote per share

Class B Common Stock [Member]

45,688,888

Ordinary shares, voting rights

Ten votes per share

IPO [Member] | Class A Common Stock [Member]

Convertible preferred stock shares converted

36,800,000

200,718,811

Private Placement [Member] | Class A Common Stock [Member]

8,888,888

Mr. Yan Tang [Member]

65.00%

Mr. Yong Li [Member]

Mr. Xiaoliang Lei [Member]

20.00%

8.00%

Mr. Zhiwei Li [Member]

Business Operations Agreement [Member]

7.00%

Exclusive Cooperation Agreements and Supplemental Agreements [Member]

10 years

VIE "Beijing Momo" [Member]

Service fee | $

$ 319,018

$ 112,043

$ 35,188

Maximum call option agreement threshold value | ¥

^[1]

Jul. 07, 2011

¥ 500,000

VIE "Beijing Momo" [Member] | Mr. Yan Tang [Member]

VIE "Beijing Momo" [Member] | Mr. Yong Li [Member]

65.00%

VIE "Beijing Momo" [Member] | Mr. Xiaoliang Lei [Member]

20.00%

VIE "Beijing Momo" [Member] | Mr. Zhiwei Li [Member]

8.00%

7.00%

Momo HK [Member]

Dec. 05, 2011

100.00%

Beijing Momo IT [Member]

Mar. 09, 2012

Beijing Momo IT [Member] | Exclusive Cooperation Agreements and Supplemental Agreements [Member]

100.00%

Chengdu Momo Technology Company Limited Investment [Member] | Exclusive Cooperation Agreements and Supplemental Agreements [Member]

10 years

Tianjin Heer Technology Co. Ltd [Member] | Exclusive Cooperation Agreements and Supplemental Agreements [Member]

10 years

10 years

[1]	These entities are controlled by the Company pursuant to the contractual arrangements disclosed below.

Organization and Principal Activities - Schedule of Subsidiaries, VIE and VIE's Subsidiaries (Detail)

12 Months Ended

Dec. 31, 2016

Nov. 23, 2011

Momo HK [Member]

Dec. 05, 2011

Hong Kong

100.00%

Beijing Momo IT [Member]

Mar. 09, 2012

PRC

100.00%

Momo BVI [Member]

Mar. 05, 2014

BVI

100.00%

Momo US [Member]

Mar. 07, 2014

VIE "Beijing Momo" [Member]

100.00%

Jul. 07, 2011

^[1]

PRC

^[1]

Chengdu Momo [Member]

May 09, 2013

^[1]

PRC

^[1]

Shanghai Momo [Member]

Jan. 19, 2015

^[1]

PRC

^[1]

Chengdu Biyou [Member]

Oct. 16, 2015

^[1]

PRC

^[1]

Tianjin Heer [Member]

Mar. 07, 2016

^[1]

Momo Pictures Co. Ltd. [Member]

PRC

^[1]

Nov. 11, 2016

^[1]

QOOL Media,Tianjin [Member]

PRC

^[1]

Nov. 16, 2016

^[1]

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

PRC

^[1]

[1]	These entities are controlled by the Company pursuant to the contractual arrangements disclosed below.

Organization and Principal Activities - Schedule of Amounts and Balances of VIE Included in Consolidated Financial Statements After Elimination of Intercompany Balances and Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 257,564	$ 169,469	$ 450,968	$ 55,374
Accounts receivable, net of allowance for doubtful accounts of $nil and $nil as of December 31, 2015 and 2016, respectively	36,078	14,896
Amount due from related parties	88	1,175
Prepaid expenses and other current assets	32,592	18,297
Deferred tax assets, current	72
Total current assets	720,153	503,837
Property and equipment, net	13,932	16,259
Rental deposits	920	743
Other non-current assets	2,593	2,000
Long term investments	31,932	19,318
Deferred tax assets, non-current	208
Total assets	769,738	542,157
Accounts payable	40,457	10,445
Deferred revenue	41,277	28,274
Accrued expenses and other current liabilities	39,965	26,694
Amounts due to related parties	8,117	6,532
Total current liabilities	133,697	71,945
Total liabilities	135,719	73,771
Net revenues	553,098	133,988	44,755
Net income	145,250	13,697	(25,415)
VIE "Beijing Momo" [Member]
Variable Interest Entity [Line Items]
Cash and cash equivalents	36,855	60,526
Accounts receivable, net of allowance for doubtful accounts of $nil and $nil as of December 31, 2015 and 2016, respectively	36,078	14,896
Amount due from related parties	88	1,175
Prepaid expenses and other current assets	20,613	9,495
Deferred tax assets, current	72
Total current assets	93,706	86,092
Property and equipment, net	1,854	1,538
Rental deposits	325	244
Other non-current assets	2,593
Long term investments	26,541	19,318
Deferred tax assets, non-current	208
Total assets	125,227	107,192
Accounts payable	36,812	9,040
Deferred revenue	41,277	28,274
Accrued expenses and other current liabilities	6,632	1,954
Amounts due to related parties	1,510
Income tax payable	3,881
Total current liabilities	90,112	39,268
Total liabilities	90,112	39,268
Net revenues	553,098	133,988	44,755
Net income	340,366	118,404	32,945
Net cash provided by operating activities	360,433	124,786	40,383
Net cash used in investing activities	(11,027)	(19,435)	(1,921)
Net cash used in financing activities	$ 0	$ 0	$ 0

Organization and Principal Activities - Schedule of Amounts and Balances of VIE Included in Consolidated Financial Statements After Elimination of Intercompany Balances and Transactions (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Variable Interest Entity [Line Items]
Allowance for doubtful accounts	$ 0	$ 0
VIE "Beijing Momo" [Member]
Variable Interest Entity [Line Items]
Allowance for doubtful accounts	$ 0	$ 0

Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Agreement Customer Product	Dec. 31, 2015 USD ($) Agreement Customer Product	Dec. 31, 2014 USD ($) Customer	Dec. 31, 2013 USD ($)
Accounting Policies [Line Items]
Bank deposits maturity	3 months
Cash and cash equivalents	$ 257,564	$ 169,469	$ 450,968	$ 55,374
Net revenues recognized	553,098	133,988	44,755
Other operating income	406	713	26
Value added tax incurred	55,353	16,951	5,436
Income tax expenses	5,136	92	0
Advertising expense	$ 55,188	27,793	27,408
Minimum [Member]
Accounting Policies [Line Items]
Percentage of ownership, equity method investment	20.00%
Maximum [Member]
Accounting Policies [Line Items]
Percentage of ownership, equity method investment	50.00%
Membership Subscription [Member]
Accounting Policies [Line Items]
Contract period, minimum	1 month
Contract period, maximum	1 year
Mobile Marketing [Member]
Accounting Policies [Line Items]
Net revenues recognized	$ 66,339	$ 38,885	1,975
Self Developed Mobile Game [Member]
Accounting Policies [Line Items]
Estimated usage life of product/service	56 days
Number of games \| Product	6	1
Self Developed Mobile Game [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Estimated usage life of product/service	20 days
Self Developed Mobile Game [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Estimated usage life of product/service	110 days
Mobile Games [Member]
Accounting Policies [Line Items]
Net revenues recognized	$ 35,453	$ 31,082	11,237
Number of games \| Agreement	6	7
Mobile Games [Member] \| Minimum [Member]
Accounting Policies [Line Items]
Estimated usage life of product/service	20 days	20 days
Mobile Games [Member] \| Maximum [Member]
Accounting Policies [Line Items]
Estimated usage life of product/service	99 days	75 days
Live Video Service [Member]
Accounting Policies [Line Items]
Net revenues recognized	$ 376,925	$ 1,231	0
Value-added Services [Member]
Accounting Policies [Line Items]
Net revenues recognized	67,603	58,462	29,756
Government Subsidies
Accounting Policies [Line Items]
Other operating income	$ 293	$ 0	$ 0
User Concentration Risk [Member] \| Accounts Receivable [Member]
Accounting Policies [Line Items]
Number of users or advertising customer accounted for 10% or more of total revenues \| Customer	0	0
User Concentration Risk [Member] \| Revenues [Member]
Accounting Policies [Line Items]
Number of users or advertising customer accounted for 10% or more of total revenues \| Customer	0	0	0
China, Yuan Renminbi
Accounting Policies [Line Items]
Cash and cash equivalents	$ 245,853	$ 75,759

Significant Accounting Policies - Schedule of Third-Party Application Stores and Other Payment Channels Accounting Receivables (Detail) - Accounts Receivable [Member] - Credit Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Third-party Payment Channel A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	40.00%	31.00%
Third-party Payment Channel B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	22.00%	8.00%
Third-party Payment Channel C [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	15.00%	1.00%

Significant Accounting Policies - Schedule of Concentration of Revenue (Detail) - Revenues [Member] - Game D [Member] - Product Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Concentration risk, percentage		2.00%	14.00%
Maximum [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	1.00%

Significant Accounting Policies - Schedule of Estimated Useful Lives of Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2016
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Leasehold Improvement [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	Shorter of the lease term or estimated useful lives
Minimum [Member] \| Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Maximum [Member] \| Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years

Accounts Receivable, Net - Schedule of Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Additional Disclosures [Abstract]
Accounts receivable	$ 36,078	$ 14,896
Less: allowance for doubtful accounts	0	0
Accounts receivable, net	$ 36,078	$ 14,896

Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Advance to advertisement suppliers

$ 5,331

$ 296

Customer advance at a third-party payment channel

^[1]

4,845

Interest receivable

4,821

5,412

Deferred platform commission cost

4,571

2,424

Input VAT

^[2]

2,968

3,485

Prepaid income tax and other expenses

2,964

1,620

Game promotions fees paid on behalf of game developers

2,250

Advance to game developers

1,550

4,200

Others

3,292

860

Prepaid expenses and other current assets

$ 32,592

$ 18,297

[1]	Customer advance at a third party payment channel is the cash deposited in a third party payment channel by the Group for the broadcasters to withdraw their revenue sharing.
[2]	Input VAT mainly occurred from the purchasing of goods for other services, property and equipment and advertising activities. It is subject to verification by related tax authorities before offsetting the VAT output.

Long Term Investments - Summary of Equity and Cost Method Investments (Detail) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Aug. 18, 2015

Feb. 13, 2015

Jan. 09, 2015

Long term Investments

$ 31,932

$ 19,318

Zya, Inc. [Member]

Other Cost Method Investment [Member]

Cost method investments

^[1]

1,005

Xish International Limited

Cost method investments

^[2]

829

1,892

Available-for-sale investments

^[3]

4,386

Available-for-sale investments

^[4]

2,880

Jingwei Chuangteng (Hangzhou) L.P. [Member]

Beijing Autobot Venture Capital L.P. [Member]

4,191

^[5]

3,836

^[5]

$ 4,744

Hangzhou Aqua Ventures Investment Management L.P. [Member]

6,736

^[6]

4,898

^[6]

$ 4,823

9,187

^[7]

7,632

^[7]

$ 7,930

Other Equity Method Investments [Member]

^[4]

2,016

^[8]

$ 702

$ 1,060

[1]	On December 13, 2016, the Group acquired 15.6% equity interest in Zya, Inc., a Delaware corporation. The total consideration of $1,005 was paid in 2016. The Group applied cost method to account for the investment due to the lack of ability to exercise significant influence.
[2]	During the years ended December 31, 2015 and 2016, the Group acquired certain equity interests in third-party private companies. The Group accounted for these investments under cost method because the Group ownership percentage is less than 20% and the Group determined that it does not have the ability to exercise significant influence. The Group determined the impairment on the above investments was $nil, $nil and $965 during the years ended December 31, 2014, 2015 and 2016, respectively.
[3]	On January 21, 2016, the Group entered into a preferred share subscription agreement to acquire 17.3% equity of Xish International Limited ("Xish") for a total consideration of $9,000, which had been paid as of December 31, 2016. The investment was classified as available-for-salesecurity as the Group determined that the preferred shares were debt securities due to the redemption option available to the investor and measured the investment subsequently at fair value. The Group recognized an impairment loss of $4,614 during the year ended December 31, 2016. Please refer to Note 8 for additional information on the fair value measurement related to the impairment loss.
[4]	On June 8, 2016, the Group entered into a share purchase agreement to acquire 16.0% equity interest of Hunan Qindao Cultural Spread Ltd. ("Qindao") for a total consideration of $4,441, of which $3,001 had been paid as of December 31, 2016. The investment was classified as available-for-sale security as the Group determined that the preferred shares were debt securities due to the redemption option available to the investor and measured the investment subsequently at fair value. No unrealized holding gains of $nil was reported in other comprehensive income for the year ended December 31, 2016.
[5]	On January 9, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Jingwei Chuangteng (Hangzhou) L.P. ("Jingwei"). According to the partnership agreement, the Group committed to subscribe 4.9% partnership interest in Jingwei for $4,744. Due to Jingwei's further rounds of financing, the Group's partnership interest was diluted to 3.1% and 2.4% as of December 31, 2015 and 2016, respectively. Of the committed subscription amount, $3,586 had been paid as of December 31, 2016. The Group recognized its share of partnership profit in Jingwei of $366 and $633 during the year ended December 31, 2015 and 2016, respectively.
[6]	On February 13, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Beijing Autobot Venture Capital L.P. ("Autobot"). According to the partnership agreement, the Group committed to subscribe 31.9% partnership interest in Autobot for $4,823. Autobot had further rounds of financing, of which the Group subscribed for $1,529. Due to Autobot's further round of financing, the Group's partnership interest was diluted to 29.7% and 26.7% as of December 31, 2015 and 2016, respectively. The committed subscription and further round of financing subscription amount, $6,352 had been paid for the year ended December 31, 2016. The Group recognized its share of partnership profit in Autobot of $274 and $771 during the year ended December 31, 2015 and 2016, respectively.
[7]	On August 18, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Hangzhou Aqua Ventures Investment Management L.P. ("Aqua"). According to the partnership agreement, the Group committed to subscribe 42.7% partnership interest for $7,930. The committed subscription amount had been fully paid as of December 31, 2016. The Group recognized its share of partnership loss and profit in Aqua of $89 and $2,134 during the years ended December 31, 2015 and 2016, respectively.
[8]	Others represents other equity method investments with individual carrying amount less than $1,000 as of December 31, 2015 and 2016, respectively. The Group performed an impairment analysis for these investments and recorded impairment loss of $nil, $nil and $186 during the years ended December 31, 2014, 2015 and 2016, respectively.

Long Term Investments - Summary of Equity and Cost Method Investments (Parenthetical) (Detail) - USD ($)

12 Months Ended

Nov. 17, 2016

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Jun. 08, 2016

Jan. 21, 2016

Aug. 18, 2015

Feb. 13, 2015

Jan. 09, 2015

Share of income (loss) on equity method investments

$ 3,471,000

$ 370,000

$ 5,765,000

Maximum [Member]

50.00%

Zya, Inc. [Member]

Total consideration paid accounted using cost method

$ 1,005,000

Cost method investments ownership percentage

15.60%

Other Cost Method Investment [Member]

Other Cost Method Investment [Member] | Maximum [Member]

$ 965,000

$ 0

Cost method investments ownership percentage

20.00%

Xish International Limited

Percentage of shares acquired recorded as available for sale debt security

17.30%

Share purchase agreement, consideration paid

$ 9,000,000

Jingwei Chuangteng (Hangzhou) L.P. [Member]

4,614,000

$ 4,191,000

^[1]

$ 3,836,000

^[1]

$ 4,744,000

Share of income (loss) on equity method investments

2.40%

3.10%

4.90%

$ 633,000

$ 366,000

Payment of equity method investment

3,586,000

Beijing Autobot Venture Capital L.P. [Member]

Equity method investments, further financing

$ 6,736,000

^[2]

4,898,000

^[2]

$ 4,823,000

$ 1,529,000

Share of income (loss) on equity method investments

26.70%

29.70%

31.90%

$ 771,000

$ 274,000

Payment of equity method investment

6,352,000

Hangzhou Aqua Ventures Investment Management L.P. [Member]

9,187,000

^[3]

7,632,000

^[3]

$ 7,930,000

Share of income (loss) on equity method investments

42.70%

2,134,000

(89,000)

^[4]

2,016,000

Share purchase agreement, total consideration

10.40%

$ 2,429,000

Payment of equity method investment

2,007,000

Percentage of shares acquired recorded as available for sale debt security

16.00%

Share purchase agreement acquired total consideration

$ 4,441,000

Share purchase agreement, consideration paid

3,001,000

Unrealized holding gains

Other Equity Method Investments [Member]

^[5]

702,000

1,060,000

Other Equity Method Investments [Member] | Maximum [Member]

186,000

$ 0

$ 1,000,000

[1]	On January 9, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Jingwei Chuangteng (Hangzhou) L.P. ("Jingwei"). According to the partnership agreement, the Group committed to subscribe 4.9% partnership interest in Jingwei for $4,744. Due to Jingwei's further rounds of financing, the Group's partnership interest was diluted to 3.1% and 2.4% as of December 31, 2015 and 2016, respectively. Of the committed subscription amount, $3,586 had been paid as of December 31, 2016. The Group recognized its share of partnership profit in Jingwei of $366 and $633 during the year ended December 31, 2015 and 2016, respectively.
[2]	On February 13, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Beijing Autobot Venture Capital L.P. ("Autobot"). According to the partnership agreement, the Group committed to subscribe 31.9% partnership interest in Autobot for $4,823. Autobot had further rounds of financing, of which the Group subscribed for $1,529. Due to Autobot's further round of financing, the Group's partnership interest was diluted to 29.7% and 26.7% as of December 31, 2015 and 2016, respectively. The committed subscription and further round of financing subscription amount, $6,352 had been paid for the year ended December 31, 2016. The Group recognized its share of partnership profit in Autobot of $274 and $771 during the year ended December 31, 2015 and 2016, respectively.
[3]	On August 18, 2015, the Group entered into a partnership agreement to subscribe partnership interest, as a limited partner, in Hangzhou Aqua Ventures Investment Management L.P. ("Aqua"). According to the partnership agreement, the Group committed to subscribe 42.7% partnership interest for $7,930. The committed subscription amount had been fully paid as of December 31, 2016. The Group recognized its share of partnership loss and profit in Aqua of $89 and $2,134 during the years ended December 31, 2015 and 2016, respectively.
[4]	On June 8, 2016, the Group entered into a share purchase agreement to acquire 16.0% equity interest of Hunan Qindao Cultural Spread Ltd. ("Qindao") for a total consideration of $4,441, of which $3,001 had been paid as of December 31, 2016. The investment was classified as available-for-sale security as the Group determined that the preferred shares were debt securities due to the redemption option available to the investor and measured the investment subsequently at fair value. No unrealized holding gains of $nil was reported in other comprehensive income for the year ended December 31, 2016.
[5]	Others represents other equity method investments with individual carrying amount less than $1,000 as of December 31, 2015 and 2016, respectively. The Group performed an impairment analysis for these investments and recorded impairment loss of $nil, $nil and $186 during the years ended December 31, 2014, 2015 and 2016, respectively.

Property and Equipment, Net - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Less: accumulated depreciation	$ (18,844)	$ (10,440)
Exchange difference	1,812	501
Total	13,932	16,259
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,763	20,177
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,370	3,073
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	31	34
Leasehold Improvement [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,800	$ 2,914

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued payroll and welfare	$ 18,982	$ 7,406
Payable for advertisement	9,871	2,718
Other tax payables	4,694	1,517
VAT payable	1,919	550
Accrued professional services fee	1,438	1,506
Payable to employees for exercise of share options		11,297
Others	3,061	1,700
Total	$ 39,965	$ 26,694

Fair Value - Schedule of Assets Measured at Fair Value on Recurring Basis (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	$ 7,266
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	257,564
Available-for-sale investments	7,266
Total	264,830
Fair Value, Measurements, Recurring [Member] \| Quoted Prices in Active Market for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	257,564
Total	257,564
Fair Value, Measurements, Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale investments	7,266
Total	$ 7,266

Fair Value - Schedule of Reconciliation of Fair Value Measurement of Available-for-Sale Investments Using Significant Unobservable Inputs on a Recurring Basis (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Fair Value Disclosures [Abstract]
Purchase	$ 12,001
Other-than-temporary loss recognized	(4,614)
Foreign exchange difference	(121)
Ending balance	$ 7,266

Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment loss on investments	$ 1,151	$ 0

Income Taxes - Additional Information (Detail) - USD ($)		1 Months Ended	12 Months Ended
	Dec. 31, 2016	Aug. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Income tax expense			$ 5,136,000	$ 92,000	$ 0
Significant unrecognized tax benefit	$ 0		0	0	0
Interest related to penalties			0	0	0
Significant impact on the unrecognized tax benefits for next twelve months	0		$ 0	$ 0	$ 0
Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax years subject to tax audits			2014
Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax years subject to tax audits			2016
Momo US [Member]
Income Tax Contingency [Line Items]
Tax loss carry forward	7,992,000		$ 7,992,000
Tax loss carry forward period			20 years
Momo HK [Member]
Income Tax Contingency [Line Items]
Tax loss carry forward	178,000		$ 178,000
Beijing Momo IT, Beijing Momo and Chengdu Momo [Member]
Income Tax Contingency [Line Items]
Tax loss carry forward	$ 105,000		$ 105,000
Beijing Momo IT, Beijing Momo and Chengdu Momo [Member] \| Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax loss carry forward, expiration date			Dec. 31, 2020
Beijing Momo IT, Beijing Momo and Chengdu Momo [Member] \| Latest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax loss carry forward, expiration date			Dec. 31, 2021
United States [Member] \| Momo US [Member]
Income Tax Contingency [Line Items]
Taxable income			$ 0
Income tax expense			$ 0
Hong Kong [Member] \| Beneficial Owner [Member] \| Minimum [Member]
Income Tax Contingency [Line Items]
Equity interest in a PRC-resident enterprise	25.00%		25.00%
Hong Kong [Member] \| Momo HK [Member]
Income Tax Contingency [Line Items]
Profit tax rate			16.50%
PRC [Member]
Income Tax Contingency [Line Items]
Income tax expense	$ 0
Withholding income tax rate for dividends distributed by the PRC subsidiaries			10.00%
PRC statutory tax rate			25.00%	25.00%	25.00%
Dividend declared	$ 0		$ 0
PRC [Member] \| Chengdu Momo Technology Company Limited Investment [Member]
Income Tax Contingency [Line Items]
Percentage of reduced tax rate			15.00%
PRC [Member] \| Beneficial Owner [Member]
Income Tax Contingency [Line Items]
Withholding income tax rate for dividends distributed by the PRC subsidiaries			5.00%
PRC [Member] \| Other Entities [Member]
Income Tax Contingency [Line Items]
Effective income tax rate			25.00%
PRC [Member] \| Beijing Momo IT [Member] \| 2015 - 2016 [Member]
Income Tax Contingency [Line Items]
Tax exemption period		2 years
PRC [Member] \| Beijing Momo IT [Member] \| 2017 - 2019 [Member]
Income Tax Contingency [Line Items]
Reduced tax rate period		3 years
Percentage of reduced tax rate		12.50%

Income Taxes - Components of Group's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current deferred tax assets:
Impairment of loss on long term investments	$ 72
Less: valuation allowance	0	$ 0
Current deferred tax assets, net	72
Non-current deferred tax assets:
Advertising expense		2,651
Net operating tax losses carry-forward	2,852	2,881
Impairment of on long term investments	208
Less: valuation allowance	(2,852)	$ (5,532)
Non-current deferred tax assets, net	$ 208

Income Taxes - Schedule of Reconciliation between Income Taxes Expense (Benefit) to (Loss) Income before Income Taxes and Actual Provision for Income Taxes (Detail) - USD ($)		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes And Tax Related [Line Items]
Net (loss) income before provision for income tax		$ 146,915,000	$ 13,419,000	$ (25,415,000)
Income tax (benefit) expense at statutory tax rate		36,729,000	3,355,000	(6,354,000)
Permanent differences		(75,000)	(144,000)	99,000
Change in valuation allowance		(2,680,000)	(2,315,000)	4,560,000
Effect of income tax rate difference in other jurisdictions		7,941,000	2,754,000	1,695,000
Effect of tax holidays and preferential tax rates		(36,779,000)	(3,558,000)
Provision for income tax		$ 5,136,000	$ 92,000	$ 0
PRC [Member]
Income Taxes And Tax Related [Line Items]
PRC statutory tax rate		25.00%	25.00%	25.00%
Provision for income tax	$ 0

Ordinary Shares - Additional Information (Detail) $ / shares in Units, $ in Thousands				1 Months Ended		12 Months Ended
	Dec. 16, 2014 shares	Apr. 22, 2014 USD ($) shares	Sep. 12, 2012 shares	Dec. 31, 2014 shares	May 31, 2014 USD ($)	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 shares	Nov. 28, 2014 shares	Dec. 31, 2013 shares	Oct. 08, 2013 shares	Jul. 13, 2012 shares	Jun. 11, 2012 shares	Apr. 30, 2012 shares	Apr. 12, 2012 shares	Nov. 23, 2011 $ / shares shares
Class of Stock [Line Items]
Ordinary shares, shares authorized		799,281,189	371,684,330						1,000,000,000		835,675,688	366,789,830	426,747,470		446,545,450	500,000,000
Ordinary shares, shares issued														147,000,000		147,000,000
Ordinary shares, par value \| $ / shares																$ 0.0001
Shares authorized		1,000,000,000									1,000,000,000				500,000,000
Convertible redeemable preferred shares, shares authorized		200,718,811									164,324,312				53,454,550
Stock split ratio for ordinary shares			10
Amounts due to related parties, current \| $						$ 8,117	$ 6,532
Issuance of ordinary shares in connection with exercise of options and vesting of share units						5,197,032	5,995,293
Class A Common Stock [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized						800,000,000	800,000,000		800,000,000
Ordinary shares, shares issued						292,062,065	286,865,033
Ordinary shares, par value \| $ / shares						$ 0.0001	$ 0.0001
Issuance of ordinary shares in connection with exercise of options and vesting of share units	45,688,888			45,688,888
Convertible preferred stock shares converted to ordinary shares	200,718,811
Ordinary shares, shares outstanding						292,062,065	286,865,033
Class A Common Stock [Member] \| IPO [Member]
Class of Stock [Line Items]
Issuance of ordinary shares in connection with exercise of options and vesting of share units	36,800,000			36,800,000
Class A Common Stock [Member] \| Private Placement [Member]
Class of Stock [Line Items]
Issuance of ordinary shares in connection with exercise of options and vesting of share units	8,888,888			8,888,888
Class B Common Stock [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized						100,000,000	100,000,000		100,000,000
Ordinary shares, shares issued						96,886,370	96,886,370
Ordinary shares, par value \| $ / shares						$ 0.0001	$ 0.0001
Ordinary shares, shares outstanding						96,886,370	96,886,370
Undesignated Ordinary Shares [Member]
Class of Stock [Line Items]
Ordinary shares, shares authorized									100,000,000
Common Stock [Member]
Class of Stock [Line Items]
Number of shares donated to the company		15,651,589
Amounts due to related parties, current \| $						$ 5,775
Accrued expenses and other current liabilities \| $						$ 675
Issuance of ordinary shares in connection with exercise of options and vesting of share units						5,197,032	5,995,293	45,688,888
Ordinary shares, shares outstanding				377,756,110		388,948,435	383,751,403	377,756,110		147,000,000
Dividend Declared [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Dividend amount \| $		$ 64,494
Dividend Paid [Member] \| Common Stock [Member]
Class of Stock [Line Items]
Dividend amount \| $					$ 58,044
Dividend payable date					2014-05

Convertible Redeemable Participating Preferred Shares - Additional Information (Detail)									1 Months Ended	12 Months Ended
	Dec. 16, 2014 shares	Apr. 22, 2014 USD ($) shares	Oct. 08, 2013 USD ($) shares	Jul. 31, 2013 USD ($) $ / shares shares	Jul. 31, 2012 USD ($) $ / shares shares	Jul. 13, 2012 USD ($) shares	Jun. 11, 2012 USD ($) shares	Apr. 12, 2012 USD ($) shares	Dec. 31, 2014 shares	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) $ / shares	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)
Temporary Equity [Line Items]
Deem dividend												$ 57,663,000
Initial conversion ratio										1
Qualified IPO, minimum proceeds										$ 50,000,000
Series A-1 and Series A-2 Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Deem dividend												$ 30,910,000
Percentage of distributions shall be made to preferred shareholders in event of liquidation									150.00%			150.00%
Percentage of redemption price on initial purchase price										150.00%
Series A-3 Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Deem dividend												$ 544,000
Percentage of distributions shall be made to preferred shareholders in event of liquidation									100.00%			100.00%
Percentage of redemption price on initial purchase price										125.00%
Series A-3 Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 0.20204
Series B Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, issued per conversion \| shares				10,079,373	4,894,500
Deem dividend												$ 3,116,000
Percentage of distributions shall be made to preferred shareholders in event of liquidation									100.00%			100.00%
Percentage of redemption price on initial purchase price										125.00%
Series B Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 0.327
Series A-1 Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible preferred stock shares converted \| shares				10,079,373	4,894,500
Deem dividend		$ 30,293,000
Repurchase of preferred shares		7,298,857
Repurchase of preferred shares, value		$ 30,750,000
Series A-1 Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 0.04714
Series B Preferred Stock Redesignated From Series A-1 Preferred Stock [Member]
Temporary Equity [Line Items]
Deem dividend													$ 2,766,000	$ 1,361,000
Series C Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Deem dividend												$ 5,596,000
Percentage of distributions shall be made to preferred shareholders in event of liquidation									130.00%			130.00%
Percentage of redemption price on initial purchase price										125.00%
Series C Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 1.2497
Series D Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Deem dividend												$ 17,497,000
Percentage of distributions shall be made to preferred shareholders in event of liquidation									130.00%			130.00%
Percentage of redemption price on initial purchase price										125.00%
Series D Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 4.84627
Series A-2 Convertible Redeemable Participating Preferred Shares [Member] \| Dividend Declared [Member]
Temporary Equity [Line Items]
Preferred shares, dividend rate												8.00%
Convertible participating redeemable preferred shares, subscription price \| $ / shares												$ 0.13469
Preferred Stock Other Than Series B Preferred Stock Redesignated From Series A-1 Preferred Stock [Member]
Temporary Equity [Line Items]
Deem dividend										$ 0	$ 0	$ 57,663,000
Investor [Member] \| Series B Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares				10,079,373	4,894,500
Aggregate proceeds from issuance of convertible redeemable participating preferred shares				$ 4,280,000	$ 1,400,000
Convertible redeemable participating preferred stock, issued price per share \| $ / shares				$ 0.425	$ 0.286
Private Placement [Member] \| Series A-1 and Series A-2 Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares								53,454,550
Aggregate proceeds from issuance of convertible redeemable participating preferred shares								$ 2,100,000
Private Placement [Member] \| Series A-3 Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares							19,797,980
Aggregate proceeds from issuance of convertible redeemable participating preferred shares							$ 4,000,000
Private Placement [Member] \| Series B Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares						55,063,140
Aggregate proceeds from issuance of convertible redeemable participating preferred shares						$ 18,006,000
Private Placement [Member] \| Series C Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares			36,008,642
Aggregate proceeds from issuance of convertible redeemable participating preferred shares			$ 45,000,000
Private Placement [Member] \| Series D Convertible Redeemable Participating Preferred Shares [Member]
Temporary Equity [Line Items]
Convertible redeemable participating preferred stock, shares issued \| shares		43,693,356
Aggregate proceeds from issuance of convertible redeemable participating preferred shares		$ 211,750,000
IPO [Member] \| Class A Common Stock [Member]
Temporary Equity [Line Items]
Convertible preferred stock shares converted \| shares	200,718,811								200,718,811

Share-Based Compensation - Additional Information (Detail) - USD ($)						1 Months Ended				12 Months Ended
	Dec. 01, 2016	May 17, 2016	Jan. 03, 2015	Dec. 11, 2014	May 15, 2014	Jul. 31, 2016	May 31, 2015	Nov. 30, 2014	Apr. 30, 2012	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Nov. 23, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Forfeited/Cancelled										1,907,630
Share-based compensation										$ 31,706,000	$ 17,382,000	$ 6,638,000
Weighted average remaining contractual term options outstanding										7 years 7 months 17 days	8 years 1 month 21 days
Number of options, granted										7,577,122
Ordinary shares, shares issued									147,000,000					147,000,000
Ordinary shares, par value														$ 0.0001
Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ordinary shares, shares issued										292,062,065	286,865,033
Ordinary shares, par value										$ 0.0001	$ 0.0001
Non-Vested Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation										$ 52,000	$ 180,000	$ 335,000
Unrecognized compensation expense										$ 0
Ordinary shares, shares issued					131,348,411				147,000,000
Modification of vesting of shares, description										The Company shall be entitled to repurchase 50% and 25% of such shares in the case that founders terminate their employments with the Company before April 17, 2015 and during the period from April 17, 2015 to April 17, 2016, respectively, at a price of US$0.0001 per share or the lowest price permitted under applicable laws. Therefore, the Company considered that 50% of the total restricted shares were vested immediately on the amendment date and 25% shall be vested annually on April 17 in the next two years ending April 17, 2016. Before the modification date, May 15, 2014, there were 131,348,411 ordinary shares, of which 45,937,500 were unvested restricted shares. As the result of modification, 19,736,705 vested ordinary shares were classified to unvested restricted shares on the modification date and the corresponding compensation costs for these unvested restricted shares were amortized over the remaining service period.
Unvested restricted shares					45,937,500						28,625,378	57,250,756	58,187,500
Unvested restricted shares, modification					19,736,705							19,736,705
Ordinary shares, par value					$ 0.0001
Fair value of RSUs, per share										$ 0.01
Fair value of RSUs										$ 1,470,000
Total fair value of non-vested restricted shares vested										286,000	$ 286,000	$ 9,000
Non-Vested Restricted Shares [Member] \| Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment vesting percentage					50.00%				25.00%
Non-Vested Restricted Shares [Member] \| Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period					2 years				36 months
Share based payment vesting percentage					25.00%				75.00%
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation										$ 343,000	$ 322,000	$ 18,000
Unrecognized compensation expense	$ 956,000
Shares recognition period	2 years 11 months 12 days
Weighted average remaining contractual term options outstanding	8 years 11 months 9 days
Fair value of RSUs, per share										$ 6.50	$ 0.00	$ 8.51
Fair value of RSUs		$ 1,299,000		$ 340,000						$ 325,000	$ 340,000	$ 0
Intrinsic value of restricted share units exercised										$ 511,000	301,000	0
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares issued										44,758,220
Number of share options granted								0
Options vested										15,313,350
Options expected to vest										15,053,681
Options expected to vest, weighted-average exercise price										$ 0.0384
Options expected to vest, Aggregate intrinsic value										$ 137,765,000	$ 154,465,000	$ 133,569,000
Weighted average fair value per option at grant date, Granted										$ 6.2405	$ 5.9341	$ 4.9994
Total intrinsic value of options exercised										$ 45,581,000	$ 45,885,000	$ 0
Total fair value of options vested										$ 27,171,000	13,680,000	1,396,000
Number of share options under accelerated vesting to permit immediate exercise							235,000
Incremental cost for acceleration of vesting to permit immediate exercise											162,000
2012 Plan [Member] \| Employee and Executives Share Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation											16,026,000	5,848,000
2012 Plan [Member] \| Non Employee Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation											756,000	437,000
2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangements expiration Period										10 years
Incremental cost for acceleration of vesting to permit immediate exercise										$ 1,532,000
Number of options, Forfeited/Cancelled						187,500
Unrecognized compensation expense										$ 68,656,000
Shares recognition period										2 years 8 months 27 days
Weighted average remaining contractual term options outstanding										7 years 7 months 17 days
2014 Plan [Member] \| Class A Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares issued								14,031,194
Increase in number of shares reserved for future issuances										1.50%
Number of shares reserved for future issuances, description										Starting from 2017, the number of shares reserved for future issuances under the 2014 Plan will be increased by a number equal to 1.5% of the total number of outstanding shares on the last day of the immediately preceding calendar year, or such lesser number of Class A ordinary shares as determined by the Company’s board of directors, on the first day of each calendar year during the term of the 2014 Plan.
2014 Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period										4 years
2014 Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period										2 years
2014 Plan [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period		4 years
2014 Plan [Member] \| RSUs [Member] \| Share-based Compensation Award, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period				6 months
Share based payment vesting percentage				50.00%
2014 Plan [Member] \| RSUs [Member] \| Independent Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share options granted		200,000		40,001
2014 Plan [Member] \| Employee and Executives Share Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation										$ 28,096,000
2014 Plan [Member] \| Non Employee Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation										$ 3,103,000
Momo BVI Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vested										3,458,333
Options expected to vest										4,224,375
Options expected to vest, weighted-average exercise price										$ 0.1089
Options expected to vest, Aggregate intrinsic value										$ 5,000	$ 18,000	$ 0
Weighted average fair value per option at grant date, Granted										$ 0.0000	$ 0.0544	$ 0.0000
Total intrinsic value of options exercised										$ 0	$ 0	$ 0
Total fair value of options vested										$ 185,000	$ 0	$ 0
Number of options, Forfeited/Cancelled										2,200,000
Unrecognized compensation expense										$ 221,000
Shares recognition period										2 years 2 months 27 days
Weighted average remaining contractual term options outstanding										8 years 2 months 9 days	9 years 3 months 4 days
Share incentive plan, term of plan			10 years
Momo BVI Share Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares issued			30,000,000
Momo BVI Share Incentive Plan [Member] \| Employee and Executives Share Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period											4 years
Share-based compensation										$ 112,000	$ 98,000
Number of options, granted											10,550,000
Exercise price of share options granted, lower range											$ 0.10
Exercise price of share options granted, upper range											$ 0.11

Share-Based Compensation - Summary of Options Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Outstanding beginning balance	31,084,006
Number of options, granted	7,577,122
Number of options, Exercised	(5,147,032)
Number of options, Forfeited/cancel	(1,907,630)
Number of options, Outstanding ending balance	31,606,466	31,084,006
Number of options, Exercisable	15,313,350
Weighted average exercise price per option, Outstanding beginning balance	$ 0.0767
Weighted average exercise price per option, Granted	0.0002
Weighted average exercise price per option, Exercised	0.0618
Weighted average exercise price per option, Forfeited	0.0226
Weighted average exercise price per option, Outstanding ending balance	0.0641	$ 0.0767
Weighted average exercise price per option, Exercisable	$ 0.0924
Weighted average remaining contractual life, Outstanding beginning balance	7 years 7 months 17 days	8 years 1 month 21 days
Weighted average remaining contractual term options outstanding	7 years 7 months 17 days	8 years 1 month 21 days
Weighted average remaining contractual life, Exercisable	6 years 9 months 4 days
Aggregated intrinsic value, Outstanding beginning balance	$ 246,597
Aggregated intrinsic value, Outstanding ending balance	288,439	$ 246,597
Aggregated intrinsic value, Exercisable	$ 139,314
Momo BVI Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options, Outstanding beginning balance	10,200,000
Number of options, Forfeited/cancel	(2,200,000)
Number of options, Outstanding ending balance	8,000,000	10,200,000
Number of options, Exercisable	3,458,333
Weighted average exercise price per option, Outstanding beginning balance	$ 0.1080
Weighted average exercise price per option, Forfeited	0.1055
Weighted average exercise price per option, Outstanding ending balance	0.1088	$ 0.1080
Weighted average exercise price per option, Exercisable	$ 0.1086
Weighted average remaining contractual life, Outstanding beginning balance	8 years 2 months 9 days	9 years 3 months 4 days
Weighted average remaining contractual term options outstanding	8 years 2 months 9 days	9 years 3 months 4 days
Weighted average remaining contractual life, Exercisable	8 years 1 month 17 days
Aggregated intrinsic value, Outstanding beginning balance	$ 20
Aggregated intrinsic value, Outstanding ending balance	10	$ 20
Aggregated intrinsic value, Exercisable	$ 5

Share-Based Compensation - Schedule of Assumptions Used to Estimate Fair Value of Stock Options Granted (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate of return				3.09%	2.31%
Risk-free interest rate of return, minimum			2.44%
Risk-free interest rate of return, maximum			3.25%
Contractual term			10 years	10 years	10 years
Volatility				54.40%	61.70%
Volatility, minimum			53.70%
Volatility, maximum			57.50%
Dividend yield			0.00%	0.00%	0.00%
Exercise price				$ 0.1404	$ 0.0327
2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate of return, minimum	1.75%	2.15%
Risk-free interest rate of return, maximum	2.70%	2.19%
Contractual term	10 years	10 years
Volatility, minimum	52.50%	55.30%
Volatility, maximum	55.30%	55.70%
Dividend yield	0.00%	0.00%
Exercise price	$ 0.0002	$ 0.0002
Momo BVI Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate of return, minimum		1.55%
Risk-free interest rate of return, maximum		1.82%
Contractual term		10 years
Volatility, minimum		55.30%
Volatility, maximum		57.20%
Dividend yield		0.00%
Minimum [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price			$ 0.0002
Minimum [Member] \| Momo BVI Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price		$ 0.10
Maximum [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price			$ 0.1404
Maximum [Member] \| Momo BVI Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price		$ 0.11

Share-Based Compensation - Summary of Non-Vested Restricted Share Activity (Detail) - Non-Vested Restricted Shares [Member] - shares		12 Months Ended
	May 15, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Outstanding beginning balance		28,625,378	57,250,756	58,187,500
Number of shares, Granted		0	0	0
Number of shares, Modification	19,736,705			19,736,705
Number of shares, Forfeited		0	0
Number of shares, Vested		(28,625,378)	(28,625,378)	(20,673,449)
Number of shares, Outstanding ending balance	45,937,500		28,625,378	57,250,756

Share-Based Compensation - Summary of Restricted Share Units Granted (Detail) - RSUs [Member] - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, Outstanding beginning balance		40,001
Granted	200,000
Forfeited	0	0
Vested	(50,000)	(40,001)
Number of shares, Outstanding ending balance	150,000

Net Income (Loss) Per Share - Calculation of Net Loss Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Net (loss) income attributable to Momo Inc.

$ 145,250

$ 13,697

$ (25,415)

Net (loss) income attributed to ordinary shareholders for computing net (loss) income per ordinary share-basic and diluted

(57,663)

$ 142,053

$ 12,358

$ (83,078)

Denominator for computing net (loss) income per share-basic:

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

377,335,923

342,646,282

85,293,775

Denominator for computing net (loss) income per share-diluted:

Weighted average shares outstanding used in computing net (loss)income per ordinary share-diluted

407,041,165

^[1]

401,396,548

^[2]

85,293,775

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.38

$ 0.04

$ (0.97)

Net loss per ordinary share attributable to Momo Inc - diluted

Net (loss) income per ordinary share attributable to Momo Inc.- diluted

$ 0.36

$ 0.03

$ (0.97)

Non-Vested Restricted Shares [Member]

Denominator for computing net (loss) income per share-basic:

Undistributed earnings

$ (3,197)

$ (1,339)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

8,493,244

37,118,622

60,951,591

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.38

$ 0.04

Series A-1 and Series A-2 Convertible Redeemable Participating Preferred Shares [Member]

Denominator for computing net (loss) income per share-basic:

$ (30,910)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

32,176,676

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.96

Series A-3 Convertible Redeemable Participating Preferred Shares [Member]

Denominator for computing net (loss) income per share-basic:

$ (544)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

18,990,997

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.03

Series B Convertible Redeemable Participating Preferred Shares [Member]

Denominator for computing net (loss) income per share-basic:

$ (3,116)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

67,182,243

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.05

Series C Convertible Redeemable Participating Preferred Shares [Member]

Denominator for computing net (loss) income per share-basic:

$ (5,596)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

34,540,898

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.16

Series D Convertible Redeemable Participating Preferred Shares [Member]

Denominator for computing net (loss) income per share-basic:

$ (17,497)

Weighted average ordinary shares outstanding used in computing net (loss) income per ordinary share-basic

28,348,231

Net loss per ordinary share attributable to Momo Inc - basic

Net (loss) income per ordinary share attributable to Momo Inc. - basic

$ 0.62

[1]	For the year 2016, an incremental weighted average number of 7,155,060 nonvested restricted shares and an incremental weighted average number of 22,550,182 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included
[2]	For the year 2015, an incremental weighted average number of 35,759,066 nonvested restricted shares and an incremental weighted average number of 22,991,200 ordinary shares from the assumed exercise of share options and vesting of restricted share units using the treasury stock method were included.

Net Income (Loss) Per Share - Summary of Potential Ordinary Shares Outstanding Excluded from Computation of Diluted Net Loss Per Ordinary Share (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share	152,500	904,489	21,831,082
RSUs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share	50,000	15,001
Non-Vested Restricted Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			60,951,591
Series A-1 and Series A-2 Convertible Redeemable Participating Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			32,176,676
Series A-3 Convertible Redeemable Participating Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			18,990,997
Series B Convertible Redeemable Participating Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			67,182,243
Series C Convertible Redeemable Participating Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			34,540,898
Series D Convertible Redeemable Participating Preferred Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential ordinary shares outstanding excluded from the computation of diluted net loss per ordinary share			28,348,231

Net Income (Loss) Per Share - Calculation of Net Loss Per Share (Parenthetical) (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Non-Vested Restricted Shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental weighted average number of shares	7,155,060	35,759,066
Share Options [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Incremental weighted average number of shares	22,550,182	22,991,200

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Oct. 22, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leased Assets [Line Items]
Lease expiration year				2019
Rental expenses under operating leases		$ 4,743	$ 3,715	$ 2,995
Compensation and legal costs	$ 1,440
Partnership Interest [Member]
Operating Leased Assets [Line Items]
Equity method investments equity contribution obligation		$ 2,942	$ 2,702

Commitments and Contingencies - Schedule of Future Minimum Payments under Non-Cancellable Operating Leases (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Leases [Abstract]
2017	$ 5,547
2018	2,644
2019	360
2020	296
Total	$ 8,847

Related Party Balances and Transactions - Schedule of Amount Due from Related Parties-current (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Amount due from related parties	$ 88	$ 1,175
Hangzhou Alimama Technology Co., Ltd. [Member]
Related Party Transaction [Line Items]
Amount due from related parties	2	876
Shanghai Touch Future Network Technology Co., Ltd. [Member]
Related Party Transaction [Line Items]
Amount due from related parties		$ 299
Guangzhou UC Network Technology Co., Ltd. [Member]
Related Party Transaction [Line Items]
Amount due from related parties	5
Guangzhou Aijiuyou Informational Technology Co., Ltd. [Member]
Related Party Transaction [Line Items]
Amount due from related parties	$ 81

Related Party Balances and Transactions - Schedule of Amount Due to Related Parties-current (Detail) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Ordinary Shareholders [Member]

$ 8,117

$ 6,532

^[1]

5,862

6,450

Alibaba Cloud Computing Limited Investment [Member]

1,281

Shanghai Touch Future Network Technology Co., Ltd. [Member]

629

$ 82

Taobao (China) Software Co., Ltd. [Member]

229

$ 116

[1]	The amounts of $6,450 and $5,775 as of December 31, 2015 and 2016 represent the unpaid repurchase amount by the Group to its ordinary shareholders. Please refer to Note 10 for repurchase of ordinary shares.

Related Party Balances and Transactions - Schedule of Amount Due to Related Parties-current (Parenthetical) (Detail) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Ordinary Shareholders [Member]

$ 8,117

$ 6,532

Unpaid Repurchase [Member] | Ordinary Shareholders [Member]

^[1]

5,862

6,450

$ 5,775

$ 6,450

[1]	The amounts of $6,450 and $5,775 as of December 31, 2015 and 2016 represent the unpaid repurchase amount by the Group to its ordinary shareholders. Please refer to Note 10 for repurchase of ordinary shares.

Related Party Balances and Transactions - Schedule of Sales to Related Parties (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Shanghai Xisue Network Technology Co., Ltd. [Member]

$ 2,442

$ 6,002

Zhejiang Tmall Technology Co., Ltd. [Member]

^[1]

922

Guangzhou Aijiuyou Informational Technology Co., Ltd. [Member]

^[1]

820

Taobao (China) Software Co., Ltd. [Member]

^[2]

400

Hangzhou Alimama Technology Co., Ltd. [Member]

^[1]

249

Guangzhou UC Network Technology Co., Ltd. [Member]

^[1]

$ 6,002

^[2]

$ 9

[1]	The sales to related parties represented mobile marketing services provided.
[2]	The sales to related parties represented mobile game revenue generated through those game operating companies.

Related Party Balances and Transactions - Schedule of Purchase from Related Parties (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

$ 7,959

$ 322

Alibaba Cloud Computing Limited Investment [Member]

^[1]

3,929

Shanghai Touch Future Network Technology Co., Ltd. [Member]

^[2]

3,360

$ 322

Taobao (China) Software Co., Ltd. [Member]

347