Moatable (MTBLY) 20-F 15 May 19 2018 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2018shares
Document Type	20-F
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	Renren Inc.
Entity Central Index Key	0001509223
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Trading Symbol	RENN
Entity Shell Company	false
Entity Emerging Growth Company	false
Common Class A [Member]
Entity Common Stock, Shares Outstanding	737,222,448
Common Class B [Member]
Entity Common Stock, Shares Outstanding	305,388,450

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents		$ 15,333	$ 125,199
Restricted cash		5,818	47,253
Accounts receivable (net of allowances of $2,730 and $2,635 as of December 31, 2017 and 2018, respectively)		2,584	6,098
Financing receivable (net of allowances of $7,023 and $9,257 as of December 31, 2017 and 2018, respectively; including $78,485 and $nil from the Plans (i) as of December 31, 2017 and 2018, respectively)	[1]	3,486	125,478
Prepaid expenses and other current assets		49,515	48,226
Inventory		59,197	95,012
Amounts due from related parties		20,829	188
Assets of discontinued operations - current (including assets of discontinued operations - current of the consolidated VIEs of $15,646 and $nil as of December 31, 2017 and 2018, respectively)		0	20,551
Total current assets		156,762	468,005
Long-term financing receivable		0	8
Property and equipment, net		1,555	29,509
Intangible assets, net		1,092	2,260
Goodwill		84,434	101,937
Long-term investments		22,341	34,742
Amounts due from related parties-non-current		133,880	0
Restricted cash – non-current (including restricted cash – non-current of the consolidated VIEs of $345 and $363 as of December 31, 2017 and 2018, respectively)		36,362	26,075
Other non-current assets(including other non-current of the consolidated VIEs of $468 and $747 as of December 31, 2017 and 2018, respectively)		767	958
Assets of discontinued operations – non-current (including assets of discontinued operations – non-current of the consolidated VIEs of $32,116 and $nil as of December 31, 2017 and 2018, respectively)		0	530,670
TOTAL ASSETS		437,193	1,194,164
Current liabilities:
Accounts payable (including accounts payable of the consolidated VIEs without recourse to Renren Inc. of $18,525 and $6,849 as of December 31, 2017 and 2018, respectively)		8,255	19,095
Short-term debt (including short-term debt of the consolidated VIEs without recourse to Renren Inc. of $12,296 and $29,816 as of December 31, 2017 and 2018, respectively)		49,887	61,479
Accrued expenses and other current liabilities (including accrued expenses and other current liabilities of the consolidated VIEs without recourse to Renren Inc. of $15,644 and $19,135 as of December 31, 2017 and 2018, respectively; including accrued expenses and other current liabilities of the Plans without recourse to Renren Inc. of $4 and $nil as of December 31, 2017 and 2018, respectively)		33,055	31,877
Payable to investors (including payable to investors of the consolidated VIEs without recourse to Renren Inc. of $7,153 and $15 as of December 31, 2017 and 2018, respectively; including payable to investors of the Plans without recourse to Renren Inc. of $64,087 and $nil as of December 31, 2017 and 2018, respectively)		15	142,689
Amounts due to related parties (including amount due to related parties of the consolidated VIEs without recourse to Renren Inc. of $7,013 and $28 as of December 31, 2017 and 2018, respectively)		55	7,059
Deferred revenue (including deferred revenue of the consolidated VIEs without recourse to Renren Inc. of $10,108 and $3,099 as of December 31, 2017 and 2018, respectively)		3,716	11,433
Income tax payable (including income tax payable of the consolidated VIEs without recourse to Renren Inc. of $9,455 and $10,920 as of December 31, 2017 and 2018, respectively)		20,602	11,727
Contingent consideration (Note 5) (including contingent consideration of the consolidated VIEs without recourse to Renren Inc. of $5,944 and $ 11,929 as of December 31, 2017 and 2018, respectively)		11,929	5,944
Liabilities of discontinued operations – current (including liabilities of discontinued operations - current of the consolidated VIEs without recourse to Renren Inc. of $3,786 and $nil as of December 31, 2017 and 2018, respectively)		0	79,244
Total current liabilities		127,514	370,547
Long-term liabilities:
Long-term debt		35,000	47,665
Long-term contingent consideration (Note 5) (including long-term contingent consideration of the consolidated VIEs without recourse to Renren Inc. of $60,850 and $ 88,098 as of December 31, 2017 and 2018, respectively)		93,741	60,850
Liabilities of discontinued operations– non-current		0	6,356
Total non-current liabilities		128,741	114,871
TOTAL LIABILITIES		256,255	485,418
Commitments (Note 23)
Equity:
Additional paid-in capital		709,137	1,303,117
Accumulated deficit		(563,737)	(653,173)
Statutory reserves		6,712	6,712
Accumulated other comprehensive income (loss)		(5,689)	17,116
Total Renren Inc. shareholders' equity		147,465	674,804
Noncontrolling interest		33,473	33,942
Total equity		180,938	708,746
TOTAL LIABILITIES AND EQUITY		437,193	1,194,164
Class A ordinary shares [Member]
Equity:
Ordinary shares		737	727
Class B ordinary shares [Member]
Equity:
Ordinary shares		$ 305	$ 305
[1]	The Company consolidated Shanghai Renren Finance Leasing Asset-Backed Special Plans (the "Plans"), see Note 1.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts and notes receivable, allowances (in dollars)	$ 2,635	$ 2,730	$ 2,640	$ 2,942
Financing receivable, allowances (in dollars)	9,257	7,023
Financing receivable net current of Consolidated assets backed financing entities	0	78,485
Assets of discontinued operations - current	0	20,551
Restricted Cash, Noncurrent	36,362	26,075
Other Assets, Noncurrent	767	958
Assets of discontinued operations – non-current	0	530,670
Accounts payable	8,255	19,095
Short-term debt	49,887	61,479
Accrued expenses and other current liabilities	33,055	31,877
Payable to investors	15	142,689
Amounts due to related parties	55	7,059
Deferred revenue	3,716	11,433
Income tax payable	20,602	11,727
Business Combination, Contingent Consideration, Liability, Current	11,929	5,944
Liabilities of discontinued operations – current	0	79,244
Business Combination, Contingent Consideration, Liability, Noncurrent	93,741	60,850
Consolidated Assets Backed Financing Entities [Member]
Accrued expenses and other current liabilities	0	4
Payable to investors	0	64,087
Variable Interest Entity [Member]
Assets of discontinued operations - current	0	15,646
Restricted Cash, Noncurrent	363	345
Other Assets, Noncurrent	747	468
Assets of discontinued operations – non-current	0	32,116
Accounts payable	6,849	18,525
Short-term debt	29,816	12,296
Accrued expenses and other current liabilities	19,135	15,644
Payable to investors	15	7,153
Amounts due to related parties	28	7,013
Deferred revenue	3,099	10,108
Income tax payable	10,920	9,455
Business Combination, Contingent Consideration, Liability, Current	11,929	5,944
Liabilities of discontinued operations – current	0	3,786
Business Combination, Contingent Consideration, Liability, Noncurrent	$ 88,098	$ 60,850
Class A ordinary shares [Member]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	3,000,000,000	3,000,000,000
Ordinary shares, shares issued	737,222,448	726,549,453
Ordinary shares, shares outstanding	737,222,448	726,549,453
Class B ordinary shares [Member]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	305,388,450	305,388,450
Ordinary shares, shares outstanding	305,388,450	305,388,450

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net revenues:
Automobile sales	$ 467,232	$ 121,084	$ 0
IVAS and others	28,510	24,271	18,164
Financing income	2,456	29,269	29,317
Total net revenues	498,198	174,624	47,481
Cost of revenues:
Automobile sales	449,805	116,385	0
IVAS and others	12,642	17,954	14,869
Financing income	14,021	28,975	25,708
Total cost of revenues	476,468	163,314	40,577
Gross profit	21,730	11,310	6,904
Operating expenses (income):
Selling and marketing	34,562	20,070	13,932
Research and development	26,349	17,435	7,542
General and administrative	71,094	51,494	39,406
Impairment of goodwill	29,055	0	0
Gain on disposal of property and equipment	(25,928)	0	0
Total operating expenses	135,132	88,999	60,880
Loss from operations	(113,402)	(77,689)	(53,976)
Other income (expenses)	(2,014)	2,656	8,336
Fair value change of contingent consideration	(29,604)	(2,601)	0
Interest income	5,760	1,988	832
Interest expenses	(5,103)	(4,322)	(7,107)
Realized gain (loss) on short-term investments	0	(100)	595
Realized gain (loss) on disposal of long-term investments	(2,141)	37,311	0
Impairment of long-term investments	0	0	(1,484)
Loss before provision of income tax and (loss) earnings in equity method investments and noncontrolling interest, net of tax	(146,504)	(42,757)	(52,804)
Income tax expenses	(9,850)	(4,479)	(2,470)
Loss before (loss) earnings in equity method investments and noncontrolling interest, net of tax	(156,354)	(47,236)	(55,274)
(Loss) earnings in equity method investments, net of tax	(2,463)	55,985	(7,840)
(Loss) income from continuing operations	(158,817)	8,749	(63,114)
Discontinued operations:
Loss from the operations of the discontinued operations, net of tax expenses of $102, $nil and $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(18,799)	(119,252)	(130,548)
Gain on deconsolidation of subsidiaries, net of tax of $454, $nil and $nil for the years ended December 31, 2016, 2017 and 2018, respectively	242,097	0	8,310
(Loss) income from discontinued operations, net of tax expenses of $102, $nil and $nil for the years ended December 31, 2016, 2017 and 2018, respectively	223,298	(119,252)	(122,238)
Net (loss) income	64,481	(110,503)	(185,352)
Net loss attributable to the noncontrolling interest	8,059	76	0
Net (loss) income from continuing operations attributable to Renren Inc.	(150,758)	8,825	(63,114)
Net (loss) income from discontinued operations attributable to Renren Inc.	223,298	(119,252)	(122,238)
Net (loss) income attributable to Renren Inc.	$ 72,540	$ (110,427)	$ (185,352)
Net (loss) income per share from continuing operations attributable to Renren Inc. shareholders:
Basic (in dollars per share)	$ (0.15)	$ 0.01	$ (0.06)
Diluted (in dollars per share)	(0.15)	0.01	(0.06)
Net (loss) income per share from discontinued operations attributable to Renren Inc. shareholders
Basic (in dollars per share)	0.22	(0.12)	(0.12)
Diluted (in dollars per share)	0.20	(0.12)	(0.12)
Net (loss) income per share attributable to Renren Inc. shareholders:
Basic (in dollars per share)	0.07	(0.11)	(0.18)
Diluted (in dollars per share)	$ 0.07	$ (0.11)	$ (0.18)
Weighted average number of shares used in calculating net (loss) income per share from continuing operations attributable to Renren Inc. shareholders:
Basic (in shares)	1,036,421,063	1,028,537,406	1,022,664,396
Diluted (in shares)	1,036,421,063	1,029,736,939	1,022,664,396
Weighted average number of shares used in calculating net (loss) income per share from discontinued operations attributable to Renren Inc. shareholders:
Basic (in shares)	1,036,421,063	1,028,537,406	1,022,664,396
Diluted (in shares)	1,095,805,917	1,028,537,406	1,022,664,396

CONSOLIDATED STATEMENTS OF OP_2

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
(Loss) from the operations of the discontinued operations, net of tax expenses	$ 0	$ 0	$ 102
Gain on deconsolidation of the subsidiaries, tax expense	0	0	454
(Loss) income from discontinued operations, net of tax expenses	$ 0	$ 0	$ 102

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 64,481	$ (110,503)	$ (185,352)
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(5,770)	9,585	(10,994)
Net unrealized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(9,671)	3,891	(18,518)
Transfer to statements of operations of realized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(7,364)	(3,243)	(729)
Other comprehensive (loss) income	(22,805)	10,233	(30,241)
Comprehensive (loss) income	41,676	(100,270)	(215,593)
Less: Comprehensive loss attributable to noncontrolling interest	(10,578)	(76)	0
Comprehensive (loss) income attributable to Renren Inc.	$ 52,254	$ (100,194)	$ (215,593)

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net unrealized (loss) gain on available-for-sale investments, net of tax	$ 0	$ 0	$ 0
Transfer to statements of operations of realized gain on available-for-sale investments, tax	$ 0	$ 0	$ 0

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Total Renren Inc.'s equity (deficit) [Member]	Additional paid-in capital [Member]	Accumulated deficit [Member]	Statutory reserves [Member]	Accumulated other comprehensive income (loss) [Member]	Non-controlling interest [Member]	Class A ordinary shares [Member]Ordinary shares [Member]	Class B ordinary shares [Member]Ordinary shares [Member]
Balance at Dec. 31, 2015	$ 929,388	$ 930,544	$ 1,243,083	$ (357,394)	$ 6,712	$ 37,124	$ (1,156)	$ 714	$ 305
Balance (in shares) at Dec. 31, 2015								714,365,091	305,388,450
Increase (Decrease) in Shareholders' Equity
Stock-based compensation	23,544	23,544	23,544	0	0		0	$ 0	$ 0
Other comprehensive income (loss)	(30,241)	(30,241)	0	0	0	(30,241)	0	0	0
Net income (loss)	(185,352)	(185,352)	0	(185,352)	0	0	0	0	0
Exercise of share option and restricted shares vesting	1,150	1,150	1,144	0	0	0	0	$ 6	$ 0
Exercise of share option and restricted shares vesting (in shares)								5,286,327	0
Deconsolidation of Beijing Wanmen Education Technology Co., Ltd. ("Wanmen")	(23)	(1,179)	(1,179)	0	0	0	1,156	$ 0	$ 0
Balance at Dec. 31, 2016	738,466	738,466	1,266,592	(542,746)	6,712	6,883	0	$ 720	$ 305
Balance (in shares) at Dec. 31, 2016								719,651,418	305,388,450
Increase (Decrease) in Shareholders' Equity
Stock-based compensation	28,016	28,016	28,016	0	0	0	0	$ 0	$ 0
Other comprehensive income (loss)	10,233	9,477	0	0	0	9,477	756	0	0
Noncontrolling interest arising from an acquisition	25,255	756	0	0	0	756	24,499	0	0
Capital contribution from non-controlling shareholder	16,717	7,954	7,954	0	0	0	8,763	0	0
Net income (loss)	(110,503)	(110,427)	0	(110,427)	0	0	(76)	0	0
Exercise of share option and restricted shares vesting	562	562	555	0	0	0	0	$ 7	$ 0
Exercise of share option and restricted shares vesting (in shares)								6,898,035	0
Balance at Dec. 31, 2017	708,746	674,804	1,303,117	(653,173)	6,712	17,116	33,942	$ 727	$ 305
Balance (in shares) at Dec. 31, 2017								726,549,453	305,388,450
Increase (Decrease) in Shareholders' Equity
Stock-based compensation	31,603	31,603	31,603	0	0	0	0	$ 0	$ 0
Other comprehensive income (loss)	(22,805)	(3,390)	0	7,364	0	(10,754)	(2,519)	0	0
Noncontrolling interest arising from an acquisition	3,016	(2,519)	0	0	0	(2,519)	5,535	0	0
Disposal of subsidiaries	(1,485)	(64)	(64)	0	0	0	(1,421)
Capital contribution from non-controlling shareholder	13,942	7,947	7,947	0	0	0	5,995	0	0
Deconsolidation of Oak Pacific Investment	(634,278)	(634,278)	(634,278)	9,532	0	(9,532)	0	0	0
Net income (loss)	64,481	72,540	0	72,540	0	0	(8,059)	0	0
Exercise of share option and restricted shares vesting	822	822	812	0	0	0	0	$ 10	$ 0
Exercise of share option and restricted shares vesting (in shares)								10,672,995	0
Balance at Dec. 31, 2018	$ 180,938	$ 147,465	$ 709,137	$ (563,737)	$ 6,712	$ (5,689)	$ 33,473	$ 737	$ 305
Balance (in shares) at Dec. 31, 2018								737,222,448	305,388,450

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ 64,481	$ (110,503)	$ (185,352)
Adjustments to reconcile net loss to net cash used in operating activities:
Share-based compensation expense	31,603	28,016	23,544
Gain on deconsolidation of subsidiaries	(242,097)	(1,825)	(12,895)
Loss (earnings) in equity method investments	12,090	(67,240)	18,183
Realized gain on disposal of long-term investments	2,141	(37,311)	0
Depreciation and amortization	1,443	2,029	2,678
Exchange loss on offshore accounts	0	0	4
Impairment on long-term investments	2,180	113,073	102,307
Impairment on intangible assets	675	0	0
Impairment on goodwill	29,055	0	0
Loss on expiration of warrant	0	0	901
Interest income from long-term available-for-sale investment	0	(108)	(298)
Provision for doubtful accounts-accounts receivable	41	46	(205)
Write-offs for advance to supplier related to Ji'nan Dearlership	16,140	(39)	369
Allowances for financing receivable losses	10,802	12,745	12,436
Provision for inventory	200	0	0
Write-offs of inventory related to Ji'nan Dealership	5,712	0	0
Write-offs of financing receivable	0	0	(119)
(Gain) loss on disposal of property and equipment	(25,928)	13	(95)
(Gain) loss on short-term investments and fair value change of derivatives	0	100	(595)
Realized gain on long-term available-for-sale investment	(1,005)	0	(729)
Fair value change of put option and liability-classified warrant	(233)	(195)	(105)
Fair value change of contingent consideration	29,604	2,601	0
Changes in operating assets and liabilities:
Accounts and notes receivable	3,463	2,116	(881)
Financing receivable	19	(321)	10
Prepaid expenses and other current assets	51,864	(20,842)	7,934
Inventory	28,903	(76,605)	0
Other non-current assets	154	434	490
Intercompany loan to Online Gaming (see Note 4)	0	0	7,500
Accounts payable	(11,682)	12,599	797
Amounts due from/to related parties	(65,343)	7,514	1,167
Accrued expenses and other current liabilities	(5,442)	8,576	2,037
Interest payable to investors	(4,722)	(4,048)	(531)
Deferred revenue	(7,324)	4,109	2,780
Other non-current liabilities	3,147	5,862	5,332
Income tax payable	9,820	4,296	2,288
Net cash used in operating activities	(60,239)	(114,964)	(11,005)
Cash flows from investing activities:
Proceeds from principal repayments of financing receivable	109,103	925,951	626,775
Payments to provide financing receivable	(5)	(748,725)	(799,174)
Proceeds from sale of trading securities	0	7,973	22,632
Proceeds from sale of available-for-sale securities	8,432	0	0
Proceeds from principal return on Series 2012-A Senior Secured Sofi Loan Notes ("SoFi Loan Note")	0	0	5,879
Proceeds from sale of equity method investments	0	94,604	18,460
Proceeds from sales of equity investments without readily determinable fair values	4,585	32,726	0
Proceeds from capital withdrawal from equity method investees	1,098	148	29,634
Purchase of trading securities	0	(7,653)	(19,702)
Purchase of derivative financial instruments	0	0	(264)
Purchase of equity method investments, call option and warrant	0	(4,940)	(16,331)
Purchase of equity investments without readily determinable fair values	(256)	(5,673)	(28,344)
Purchase of long-term available-for-sale investments	(650)	(3,000)	(6,150)
Proceeds from disposal of equipment and property	60,388	63	142
Purchases of equipment and property	(884)	(135)	(357)
Purchases of intangible assets	0	0	0
Settlement of put option	0	0	(7,000)
Cash disposed of from deconsolidation of subsidiaries	0	(1,179)	(6,176)
Acquisition of subsidiaries, net of cash acquired	(9,454)	(23,305)	0
Loan to a noncontrolling shareholder		0	0
Loan to related parties	0	(11,113)	(14,625)
Proceeds from repayment of related party loans	0	8,871	11,701
Loans to third parties	(1,513)	(2,220)	(4,518)
Proceeds from repayment of third party loans	0	892	3,765
Net cash (used in) provided by investing activities	170,844	263,285	(183,653)
Cash flows from financing activities:
Proceeds from exercise of share options	526	262	1,430
Proceeds from investors	57,767	1,580,544	844,712
Payment to investors	(193,502)	(1,688,655)	(637,931)
Repayment of borrowings	(119,000)	(68,025)	(131,900)
Cash distribution to shareholders related to acquisition of OPI	(168,983)	0	0
Proceeds from short-term borrowings	71,140	65,859	39,072
Proceeds from long-term borrowings	87,000	26,639	0
Proceeds from loan provided by a related party	0	0	10,692
Capital injection by noncontrolling shareholders	10,873	16,263	0
Net cash provided by (used in) financing activities	(254,179)	(67,113)	126,075
Net (decrease) increase in cash and cash equivalents and restricted cash	(143,574)	81,208	(68,583)
Cash and cash equivalents and restricted cash at beginning of year	201,923	110,084	183,500
Effect of exchange rate changes	(836)	10,631	(4,833)
Cash and cash equivalents and restricted cash at end of year	57,513	201,923	110,084
Supplemental schedule of cash flows information:
Interest paid	8,290	10,729	12,249
Income taxes paid	1	180	123
Schedule of non-cash activities:
Contingent consideration	14,113	62,493	0
Receivable from disposition of Renren SNS	60,000	0	0
Purchase of long-term available-for-sale investment through exchange of equity interest in a subsidiary	0	0	1,742
Acquisition of business settled by forgiveness of financing receivable	1,428	21,201	0
Acquisition of entity through settlement of long-term investments	0	5,787	0
Acquisition of entity through settlement of loan to a related party	0	200	0
Acquisition of equity method investment through settlement of loan from a related party	$ 0	$ 0	$ 4,905

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
SNS Business [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 60
Oak Pacific Investment [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 500

ORGANIZATION AND PRINCIPAL ACTI

ORGANIZATION AND PRINCIPAL ACTIVITIES	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND PRINCIPAL ACTIVITIES	1. ORGANIZATION AND PRINCIPAL ACTIVITIES Renren Inc. was incorporated in the Cayman Islands. The Company, its consolidated subsidiaries, variable interest entities ("VIEs") and VIEs' subsidiaries (collectively referred to as the "Company") are mostly engaged in the business of used car trading which represents the majority of the Company's revenue during the year ended December 31, 2018 and its SaaS business, which includes all-in-one real estate solution provider, Chime, and a 360° real estate marketing and media service provider, Geographic Farming. Prior to 2018, the Company was also engaged in the operation of its social networking internet platform ("SNS") through which it provided online advertising services and internet value-added services ("IVAS") as well as the operation of a financial services platform to provide internet finance services. During the years ended December 31, 2017, the Company gradually stopped providing its internet finance services to focus on its used car business. Additionally, during the year ended December 31, 2018, the Company disposed of its SNS business as well as of OPI as further described below. Disposal of SNS business In December 2018, the Company disposed all of its tangible and intangibles assets related to www.renren.com and its related SNS business. The disposal of its SNS business represents a strategic shift and has a major effect on the Company's results of operations. Accordingly, assets, liabilities, revenues and expenses and cash flows related to the SNS business have been reclassified in the accompanying consolidated financial statements as discontinued operations for all periods presented. The consolidated balance sheet as of December 31, 2017, consolidated statements of operations and consolidated statements of cash flows for the years ended December 31, 2016, 2017 and 2018 have been adjusted to reflect this change. Refer to Note 4 for further details. Disposal of Oak Pacific Investment ("OPI") On April 30, 2018, the Company announced a series of transactions that included a cash dividend by the Company and a private placement by its subsidiary OPI. The OPI transaction was undertaken to reduce the number and aggregate size of the Company's long-term investments. At the time of the disposal, OPI held the Company's ZenZone advertising agency business as well as the majority of the Company's long-term investments. The private placement closed on June 21, 2018 and the Company completed the payment of the special cash dividend shortly thereafter. As a result, the Company deconsolidated OPI on June 21, 2018. The disposal of OPI represents a strategic shift and has a major effect on the Company's results of operations. Accordingly, assets, liabilities, revenues and expenses and cash flows related to OPI have been reclassified in the accompanying consolidated financial statements as discontinued operations for all periods presented. The consolidated balance sheet as of December 31, 2017, consolidated statements of operations and consolidated statements of cash flows for the years ended December 31, 2016, 2017 and 2018 have been adjusted to reflect this change. Refer to Note 4 for further details. The Kaixin Offering On November 2, 2018, Kaixin Auto Group ("Kaixin"), a wholly owned subsidiary of Renren Inc, Kaixing Auto Holidngs ("KAH"), a blank check company formed for the purpose of entering into a business business combination with one or more businesses and listed on the NASAQ stock market (formerly called CM Seven Star Acquisition Corporation) and Renren Inc. agreed to a business combination under the terms of a definitive share exchange agreement (the "Business Comniation"). Pursuant to a series of transactions that closed on April 30, 2019, KAH acquired 100% of the issued and outstanding shares of Kaixin from Renren in exchange for an initial consideration of approximately 28.3 million of KAH shares upon the consummation of the Business Combination. The transaction resulted in Renren Inc. acquiring a controlling interest of KAH. The series of transactions also raised approximately US$28.3 million for Kaixin and resulted in the separate listing of Kaixin on the Nasdaq Stock Market under the ticker symbol KXIN. As of December 31, 2018, Renren Inc.'s subsidiaries, VIEs and VIEs' major subsidiaries are as follows: Later of date Percentage of of incorporation Place of legal ownership Name of Subsidiaries or acquisition incorporation by Renren Inc. Principal activities Subsidiaries: CIAC/ChinaInterActiveCorp ("CIAC") August 5, 2005 Cayman Islands 100 % Investment holding Kaixin Auto Group (formerly named as Renren Wealth Inc.) March 7, 2011 Cayman Islands 100 % Investment holding Link224 Inc. May 31, 2011 Cayman Islands 100 % Investment holding Wole Inc. October 27, 2011 Cayman Islands 100 % Investment holding JiehunChina Inc. ("JiehunChina") June 14, 2011 Cayman Islands 100 % Investment holding Renren Gongying Inc. October 2, 2015 Cayman Islands 100 % Investment holding Renren Finance, Inc. December 15, 2014 Cayman Islands 100 % Internet business Renren CRSP Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren PLML Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren KURY Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren ONER Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren BLCR Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren ZHCH Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren LSTAR Holdings Inc. October 17, 2016 Cayman Islands 100 % Inactive company Renren CHRYPH Holdings Inc. October 31, 2016 Cayman Islands 100 % Inactive company Jet Sound Hong Kong Company Limited May 7, 2011 Hong Kong 100 % Investment holding Renren Game Hong Kong Limited ("Game HK") March 8, 2012 Hong Kong 100 % Investment holding Renren Winday Company Limited. July 26, 2016 Hong Kong 100 % Inactive company Renren Giantly Limited. August 16, 2016 Hong Kong 100 % Investment holding Renren Gentle Height Company Limited. December 7, 2016 Hong Kong 100 % Investment holding Chime Technologies, Inc. September 7, 2012 USA 100 % SaaS business Renren U.S. Holdco, Inc. July, 2017 USA 100 % Investment holding Sindeo Inc. July 3, 2017 USA 100 % Inactive company Geographic Farming LLC Auguest 24, 2017 USA 100 % SaaS business Trucker Path Inc. December 28, 2017 USA 100 % Internet business Lucrativ Inc. January 22, 2018 USA 100 % SaaS business Renren Giantly Philippines Inc. March, 2018 Philippines 100 % SaaS business Qianxiang Shiji Technology Development (Beijing) Co., Ltd. ("Qianxiang Shiji") March 21, 2005 PRC 100 % Investment holding Beijing Woxiu Information Technology Co. Ltd. ("Beijing Woxiu") October 27, 2011 PRC 100 % Investment holding Beijing Jiexun Shiji Technology Development Co., Ltd. ("Jiexun Shiji") April 26, 2012 PRC 100 % Investment holding Renren Huijin (Tianjin) Technology Co., Ltd. ("Huijin") October 10, 2012 PRC 100 % Investment holding Joy Interactive (Beijing) Technology Development Co., Ltd. April 24, 2013 PRC 100 % Investment holding Shanghai Renren Financial Leasing Co., Ltd May 25, 2015 PRC 100 % Financing business Shanghai Renren Automobile Technology Co., Ltd August 18, 2017 PRC 100 % Investment holding Shanghai Zhoushuo Automobile Technology Co., Ltd January 18, 2018 PRC 100 % Investment holding Ji’nan Zhoushuo Yidong Automobile Commerce Co., Ltd January 17, 2018 PRC 70 % Automobile business Suzhou Zhoushuo Lujie Automobile Service Co., Ltd February 7, 2018 PRC 70 % Automobile business Shanghai Lingcong Internet Information Technology Co. Ltd. January 18, 2018 PRC 100 % Investment holding Shanghai Jiexun Automobile Sales Co. Ltd. February 2, 2018 PRC 100 % Investment holding Shanghai Lingding Automobile Technology Co., Ltd. April 12, 2018 PRC 100 % Investment holding Shanghai DingranInformation Technology Co. Ltd. April 12, 2018 PRC 100 % Investment holding Renren Zhenhan Technology Development (Beijing) Co., Ltd November 13, 2017 PRC 100 % Investment holding Variable Interest Entities: Beijing Qianxiang Tiancheng Technology Development Co., Ltd. ("Qianxiang Tiancheng") October 28, 2002 PRC N/A IVAS business Guangzhou Xiuxuan Brokers Co., Ltd.(“Guangzhou Xiuxuan”) September 22, 2014 PRC N/A IVAS business Shanghai Qianxiang Changda Internet Information Technology Development Co., Ltd. ("Shanghai Changda") October 25, 2010 PRC N/A Internet business Shanghai Jieying Automobile Sales Co., Ltd. ("Shanghai Jieying") Feburay 27, 2017 PRC N/A Automobile business Major subsidiaries of Variable Interest Entities: Beijing Qianxiang Wangjing Technology Development Co., Ltd. ("Qianxiang Wangjing") November 11, 2008 PRC N/A Internet business Beijing Wole Shijie Information Technology Co., Ltd. ("Wole Shijie") October 27, 2011 PRC N/A Technology development and service Beijing Kirin Wings Technology Development Co., Ltd. January 16, 2013 PRC N/A Internet business Shanghai Wangjing Commercial Factoring Co., Ltd. July 28, 2015 PRC N/A Factoring business Beijing Jingwei Zhihui Information Technology Co., Ltd. (“Jingwei Zhihui”) March 19, 2014 PRC N/A Internet business Shanghai Wangjing Investment Management Co., Ltd. April 20, 2015 PRC N/A Internet business Shanghai Mumian Interactive Internet Information Service Co., Ltd. June 16, 2016 PRC N/A IVAS business Fenqi Winday Company Limited, February 29, 2016 Hong Kong N/A Internet business Guangzhou Qunge Information Technology Co., Ltd. August 26, 2016 PRC N/A IVAS business Shanghai Heiguo Internet Information Technology Co., Ltd. Feburary 27,2017 PRC N/A Investment holding Renren Zhencai Technology Development (Beijing) Co., Ltd. December 15, 2017 PRC N/A Investment holding Jieying Baolufeng Automobile Sales (Shenyang) Co., Ltd. June 14, 2017 PRC N/A Automobile business Chongqing Jieying Shangyue Automobile Sales Co., Ltd. July 3, 2017 PRC N/A Automobile business Jiangsu Jieying Ruineng Automobile Sales Co., Ltd. May 16, 2017 PRC N/A Automobile business Dalian Yiche Jieying Automobile Sales Co., Ltd. June 27, 2017 PRC N/A Automobile business Henan Jieying Hengxin Automobile Sales Co., Ltd. June 29, 2017 PRC N/A Automobile business Shanxi Jieying Weilan Automobile Sales and Service Co., Ltd. March 13, 2018 PRC N/A Automobile business Shandong Jieying Huaqi Automobile Service Co., Ltd. July 20, 2017 PRC N/A Automobile business Neimenggu Jieying Kaihang Automobile Sales Co., Ltd. July 14, 2017 PRC N/A Automobile business Hangzhou Jieying Yifeng Automobile Sales Co., Ltd. August 1, 2017 PRC N/A Automobile business Jilin Jieying Taocheguan Automobile Sales Co., Ltd. October 31, 2017 PRC N/A Automobile business Suzhou Jieying Chemaishi Automobile Sales Co., Ltd. October 27, 2017 PRC N/A Automobile business Cangzhou Jieying Bole Automobile Sales Co., Ltd. August 10, 2017 PRC N/A Automobile business Shanghai Jieying Diyi Automobile Sales Co., Ltd. October 19, 2017 PRC N/A Automobile business Ningxia Jieying Xianzhi Automobile Sales Co., Ltd. July 26, 2017 PRC N/A Automobile business Wuhan Jieying Chimei Automobile Sales Co., Ltd. November 20, 2017 PRC N/A Automobile business The VIE arrangements PRC regulations currently limit direct foreign ownership of business entities providing automobile sales, value-added telecommunications services, online 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, the Company conducts substantially all of its businesses through the VIE Qianxiang Tiancheng as well as its respective subsidiaries. Prior to March 2016, the Company also conducted its business through a VIE Jingwei Zhihui, which became a wholly owned subsidiary of Qianxiang Tiancheng in March 2016. Qianxiang Tiancheng is mainly engaged in the provision of online advertising, IVAS and internet finance services. Jingwei Zhihui is mainly engaged in the provision of internet finance services. From June 2017, the Company also operates the used car trading business through a newly found VIE, Shanghai Jieying. Qianxiang Shiji ("WFOE"), a wholly owned subsidiary of CIAC, and Shanghai Renren Automotive Technology Co., Ltd, or Shanghai Automotive ("WFOE"), a wholly owned subsidiary of Jet Sound Hong Kong Company Limited., entered into a series of contractual arrangements with the VIEs that enable the Company to (1) have power to direct the activities that most significantly affects the economic performance of the VIEs, and (2) receive the economic benefits of the VIEs that could be significant to the VIEs. Accordingly, the Company is considered the primary beneficiary of the VIEs and has consolidated the VIEs' 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 VIEs, the Company believes the Company's rights under the terms of the exclusive option agreement and power of attorney are substantive given the substantive participating rights held by SB Pan Pacific Corporation as it relates to operating matters, which provide it with a substantive kick out right. More specifically, the Company believes the terms of the contractual agreements are valid, binding and enforceable under PRC laws and regulations currently in effect. In particular the Company also believes that the minimum amount of consideration permitted by the applicable PRC law to exercise the exclusive option does not represent a financial barrier or disincentive for the Company to currently exercise its rights under the exclusive option agreement. A simple majority vote of the Company's board of directors is required to pass a resolution to exercise the Company's rights under the exclusive option agreement, for which the consent from Mr. Joe Chen, who holds the most voting interests in the Company and is also the Company's chairman and CEO, is not required. The Company's rights under the exclusive option agreement give the Company the power to control the shareholders of the VIEs and thus the power to direct the activities that most significantly impact the VIEs' economic performance. In addition, the Company's rights under the powers of attorney also reinforce the Company's abilities to direct the activities that most significantly impact the VIEs' economic performance. The Company also believes that this ability to exercise control ensures that the VIEs will continue to execute and renew service agreements and pay service fees to the Company. By charging service fees at the sole discretion of the Company, and by ensuring that service agreements are executed and renewed indefinitely, the Company has the rights to receive substantially all of the economic benefits from the VIEs. The VIEs and their subsidiaries hold the requisite licenses and permits necessary to conduct the Company's business under the current business arrangements. The contractual agreements below provide the Company with the power to direct the activities that most significantly affect the economic performance of the VIEs and enable the Company to receive substantially all of economic benefits and absorb the losses of the VIEs. (1) Power of Attorney: WFOEs hold irrevocable power of attorney executed by the legal owners of the VIEs to exercise their voting rights on, including but not limited to dividend declaration, all matters at meetings of the legal owners of the VIEs and through such power of attorney has the right to control the operations of the VIEs. The power of attorney for Qianxiang Tiancheng will remain in force for ten (2) Business Operations Agreement: The business operations agreements specifically and explicitly grant WFOEs the principal operating decision making rights, such as appointment of the directors and executive management, of the VIEs. The terms of the business operations agreements are ten years and will be extended automatically for another ten years unless the WFOEs provide a 30-day advance written notice to the VIEs and to each of the VIEs' shareholders requesting not to extend the term three months prior to the expiration dates of December 22, 2020 and August 17, 2027, respectively. Neither the VIEs nor any of the VIEs' shareholders may terminate the agreements during the terms or the extensions of the terms. (3) Exclusive Equity Option Agreement : Under the exclusive equity option agreement, the WFOEs have the exclusive right to purchase the equity interests of the VIEs from the registered legal equity owners as far as PRC regulations permit a transfer of legal ownership to foreign ownership. The WFOEs can exercise the purchase right at any portion and any time in the 10-year agreement period. Without the WFOE's consent, the VIEs' shareholders shall not transfer, donate, pledge, or otherwise dispose their equity shareholdings in the VIEs in any way. The equity option agreement will remain in full force and effect until the earlier of: (i) the date on which all of the equity interests in the VIEs have been acquired by the respective WFOE or its designated representative(s); or (ii) the receipt of the 30-day advance written termination notice issued by the respective WFOE to the shareholders of the VIEs. The term of these agreements will be automatically renewed upon the extension of the term of the relevant exclusive equity option agreement. (4) Spousal Consent Agreement: The spouse of each of the shareholders of Qianxiang Tiancheng acknowledged that certain equity interests of Qianxiang Tiancheng held by and registered in the name of his/her spouse will be disposed of pursuant to the equity option agreements. These spouses understand that such equity interests are held by their respective spouse on behalf of Qianxiang Shiji, and they will not take any action to interfere with the disposition of such equity interests, including, without limitation, claiming that such equity interests constitute communal property of marriage. The spouse of each of the shareholders of Shanghai Jieying acknowledged that certain equity interests of Shanghai Jieying, held by and registered in the name of his/her spouse would be disposed of pursuant to the loan agreement, equity option agreement and equity interest pledge agreement of which they were respectively a party, and they will not take any action to interfere with such arrangement, including claiming that such equity interests constitute property or communal property between his/her spouse and himself/herself. (5) Exclusive Technical and Consulting Services Agreement : The WFOEs and registered shareholders irrevocably agree that the WFOEs shall be the exclusive technology service provider to the VIEs in return for a service fee which is determined at the sole discretion of the WFOEs. The term of each of agreement is ten years and will be extended automatically for another ten years unless terminated by the WFOEs. The WFOEs can terminate the agreement at any time by providing a 30-day prior written notice. The VIEs are not permitted to terminate the agreements prior to the expiration of the terms by December 22, 2020 and August 17, 2027, respectively, unless the WFOEs fail to comply with any of their obligations under this agreement and such breach makes the WFOEs unable to continue to perform the agreements. (6) Intellectual Property License Agreement: The WFOEs and registered shareholders agree that the WFOEs shall have the exclusive right to license its intellectual property rights to the VIEs in return for a license fee. The license fee is determined at the discretion of the Company. The term of these agreements will be automatically renewed upon the extension of the term of the relevant intellectual property license agreement. The term of the agreement will be extended for another five years with both parties' consents. The WFOEs may terminate the agreement at any time by providing a 30-day prior written notice. Any party may terminate the agreement immediately with written notice to the other party if the other party materially breaches the relevant agreement and fails to cure its breach within 30 days from the date it receives the written notice specifying its breach from the non-breaching party. The parties will review the agreement every three months and determine if any amendment is needed. (7) Loan Agreements: Under loan agreements between the WFOEs and each of the shareholders of the VIEs, the WFOEs made interest-free loans to the shareholders exclusively for the purpose of the initial capitalization and the subsequent financial needs of the VIEs. The loans can only be repaid with the proceeds derived from the sale of all of the equity interests in the VIEs to the WFOEs or their designated representatives pursuant to the equity option agreements. The term of each of these loans is ten years from the actual drawing down of such loans by the shareholders of the VIEs, and will be automatically extended for another ten years unless a written notice to the contrary is given by the WFOEs to the shareholders of the VIEs three months prior to the expiration of the loan agreements. (8) Equity Interest Pledge Agreement: Shareholders of the VIEs have pledged all of their equity interests in the VIEs with their respective WFOEs and the WFOEs are entitled to certain rights to sell the pledged equity interests through auction or other means if the VIEs or the shareholders default in their obligations under other above-stated agreements. These agreements are substantially the same, and that the equity interest pledge has become effective and will expire on the earlier of: (i) the date on which the VIEs and their shareholders have fully performed their obligations under the loan agreements, the exclusive technical service agreement, the intellectual property right license agreement and the equity option agreements; (ii) the enforcement of the pledge by the WFOEs pursuant to the terms and conditions under this agreement to fully satisfy its rights under such agreements; or (iii) the completion of the transfer of all equity interests of the VIEs by the shareholders of the VIEs to another individual or legal entity designated by the WFOEs pursuant to the equity option agreement and no equity interests of the VIEs are held by such shareholders. Risks in relation to the VIE structure The Company and the Company's legal counsel believe that Qianxiang Shiji's and Shanghai Automotive's contractual arrangements with the VIEs are in compliance with PRC law and are legally enforceable. However, uncertainties in the PRC legal system could limit the Company's ability to enforce these contractual arrangements and if the shareholders of the VIEs 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 VIEs not to pay the service fees when required to do so. If the legal structure and contractual arrangements were found to be in violation of PRC laws and regulations, the PRC government could:  Revoke the business and operating licenses of the WFOEs, the VIEs and their subsidiaries;  Discontinue or restrict the operations of any related-party transactions among the WFOEs, the VIEs and their subsidiaries;  Impose fines or other requirements on the WFOEs, the VIEs and their subsidiaries;  Require the Company or the WFOEs, the VIEs and their subsidiaries to revise the relevant ownership structure or restructure operations; and/or  Restrict or prohibit the Company's use of the proceeds of the additional public offering to finance the Company's business and operations in China. The Company's ability to conduct its business including online advertising, online talent show, other internet value added services, used car trading business and internet finance services may be negatively affected if the PRC government were to carry out any of the aforementioned actions. As a result, the Company may not be able to consolidate the VIEs and the VIEs' subsidiaries in its consolidated financial statements as it may lose the ability to exert effective control over the VIEs and the VIEs' subsidiaries and shareholders, and it may lose the ability to receive economic benefits from the VIEs and the VIEs' subsidiaries. Certain shareholders of the VIEs are also shareholders of the Company. The interests of the shareholders of the VIEs 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 VIEs not to pay the service fees when required to do so. The Company cannot assure that when conflicts of interest arise, shareholders of the VIEs 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 VIEs may encounter in their capacity as beneficial owners and directors of the VIEs. The Company believes the shareholders of the VIEs will not act contrary to any of the contractual arrangements and the exclusive option agreements provide the Company with a mechanism to remove the current shareholders of the VIEs as beneficial shareholders of the VIEs should they act to the detriment of the Company. The Company relies on the current shareholders of VIEs whom also are directors and executive officers of the Company, to fulfill their fiduciary duties and abide by laws of Cayman Islands and act in the best interest of the Company or that conflicts will be resolved in the Company’s favor. If the Company cannot resolve any conflicts of interest or disputes between the Company and the shareholders of the VIEs, 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 VIEs also depends on the power of attorney that the WFOEs have to vote on all matters requiring shareholder approval in the VIEs. As noted above, the Company believes this power of attorney is legally enforceable but may not be as effective as direct equity ownership. The following financial statement balances and amounts of the Company’s VIEs were included in the accompanying consolidated financial statements after elimination of intercompany balances and transactions between the offshore companies, WFOEs, VIEs and VIEs’ subsidiaries. As of December 31, 2017 and 2018, the balance of the amounts payable by the VIEs and their subsidiaries to the WFOEs related to the service fees were $ nil. As of December 31, 2017 2018 Cash and cash equivalents $ 5,198 $ 9,363 Restricted cash 51 - Accounts receivable, net 1,423 2,215 Financing receivable, net 145 - Inventory 95,012 57,859 Prepaid expenses and other current assets 35,686 46,247 Amounts due from related parties 865 20,008 Assets of discontinued operations - current 15,646 - Total current assets 154,026 135,692 Property and equipment, net 491 489 Long-term investments 11,901 1,900 Goodwill 89,274 64,364 Amounts due from a related party - non-current - 40,000 Restricted cash – non-current 345 363 Other non-current assets 468 747 Assets of discontinued operations – non-current 32,116 - Total non-current assets 134,595 107,863 Total assets $ 288,621 $ 243,555 Accounts payable $ 18,525 $ 6,849 Short-term debt 12,296 29,816 Accrued expenses and other current liabilities 15,644 19,135 Payable to investors 7,153 15 Amounts due to related parties 7,013 28 Deferred revenue 10,108 3,099 Contingent consideration 5,944 11,929 Income tax payable 9,455 10,920 Current liabilities of discontinued operations 3,786 - Total current liabilities 89,924 81,791 Long-term contingent consideration 60,850 88,098 Total non-current liabilities 60,850 88,098 Total liabilities $ 150,774 $ 169,889 Years ended December 31, 2016 2017 2018 Net revenues $ 46,040 $ 153,759 $ 486,388 Loss from continuing operations $ (13,035 ) $ (19,250 ) $ (82,304 ) Loss from discontinued operations $ (18,133 ) $ (22,995 ) $ (5,220 ) Years ended December 31, 2016 2017 2018 Net cash provided by (used in) operating activities $ 68,374 $ (146,911 ) $ (14,403 ) Net cash (used in) provided by investing activities $ (187,621 ) $ 22,943 $ (11,441 ) Net cash provided by financing activities $ 148,080 $ 37,208 $ 27,018 The VIEs contributed an aggregate of 97.0%, 88.1% and 97.6% of the consolidated net revenues for the years ended December 31, 2016, 2017 and 2018, respectively. As of the fiscal years ended December 31, 2017 and 2018, the VIEs accounted for an aggregate of 24.2% and 55.7%, 31.1% and 66.3%, respectively, of the consolidated total liabilities. The assets not associated with the VIEs primarily consist of cash and cash equivalents and long-term investments. There are no consolidated VIEs' assets that are collateral for the VIEs' obligations and can only be used to settle the VIEs' obligations. There are no creditors (or beneficial interest holders) of the VIEs 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, which require the Company or its subsidiaries to provide financial support to the VIEs. However, if the VIEs ever need financial support, the Company or its subsidiaries may, at its option and subject to statutory limits and restrictions, provide financial support to its VIEs through loans to the shareholders of the VIEs or entrustment loans to the VIEs. Relevant PRC laws and regulations restrict the VIEs 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 26 for disclosure of restricted net assets. Consolidated Plans In January 2016 and September 2016, the Company originated the issuance of two Shanghai Renren Finance Leasing Asset-Backed Special Plans, approximating $46.1 million (RMB299.8 million) and $78.5 million (RMB510.6 million), respectively. The Plans are collateralized by certain financing receivables arising from the Company's used car financing business. The plan expired by the end of May 2018. The Plans consist of three tranches: AAA-rated senior securities (covering 68.0% and 70.5% of the total securities issued, respectively) and AA-rated senior securities (covering 10.5% and 11.0% of the total securities issued, respectively) which were purchased by external investors, and subordinate securities (covering 21.5% and 18.5% of the total securities issued, respectively) held by the Company. The Company also provided a guarantee to secure the full repayment of the principal and interest of the external investors in the Plans. The Company holds significant variable interests in the Plans through holding the subordinate securities and the guarantee provided, from which the Company has the right to receive benefits from the Plans that could potentially be significant to the Plans. The Company also has power to direct the activities of the Plans that most significantly impact the economic performance of the Plans by making revolving purchases of underlying financing receivables and providing payment collection services from the underlying financing receivables. Accordingly, the Company is considered the primary beneficiary of the Plans and has consolidated the Plans' assets, liabilities, results of operations, and cash flows in the accompanying consolidated financial statements. The assets of the Plans are not available to creditors of the Company. In addition, the investors of the Plans have no recourse against the assets of the Company. The following financial statement amounts and balances of the Plans were included in the accompanying consolidated financial statements after elimination of intercompany transactions and balances: As of December 31, 2017 2018 Financing receivable, net $ 78,485 $ - Total assets $ 78,485 $ - Accrued expenses and other current liabilities $ 4 $ - Payable to investors 64,087 - Total liabilities $ 64,091 $ - Years ended December 31, 2016 2017 2018 Net revenues - - - Net loss $ 375 $ 91 $ 36 Years ended December 31, 2016 2017 2018 Net cash provided by operating activities - - - Net cash provided by investing activities - - - Net cash provided by financing activities - - -

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation The consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP"). Liquidity The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The realization of assets and the satisfaction of liabilities in the normal course of business are dependent on, among other things, the Company’s ability to generate cash flows from operations, and the Company’s ability to arrange adequate financing arrangements. As of December 31, 2018, the Company had $29,248, $147,465, including an accumulated deficit of $563,737. For the year ended December 31, 2018, the Company incurred losses from continuing operations amounting to $158,817 and generated negative cash flows from operating activities amounting to $ 60,239. ● In January 2019, Kunlun Tech Limited ("Kunlun"), KAH and Kaixin entered into a convertible loan agreement pursuant to which Kunlun has agreed to invest US$23 million into Kaixin. US$20 million of the loan was advanced to Kaixin on January 28, 2019, and the remaining US$3 million is to be paid by January 31, 2020. ● In January 2019, KAH entered into a subscription agreement with a third-party investor to sell 750,000 of its units (each unit having the same underlying securities as were issued in KAH’s initial public offering) at a price of US$10.00 per unit. The private placement of US$7.5 million was received by KAH on May 2, 2019, which will further provide liquidity for Kaixin's future operations. ● In January 2019, the Company received US$ 3 million for the disposal of Renren SNS Business as set out in Note 4. On May 6, 2019, the Company obtained a signed commitment letter from Beijing Infinities Interactive Media Co., Ltd ("Beijing Infinities") which stated that the remaining cash consideration of US$17 million is expected to be received before June 30, 2019. ● In April 2019, 58.com Holdings Inc. ("58.com"), KAH and Kaixin entered into a convertible loan agreement pursuant to which 58.com has agreed to invest US$1 million into Kaixin. The proceeds from the loan were received on April 30, 2019. ● In April 2019, the Company entered into a long-term borrowing agreement with East West Bank for a total credit up to US$7.3 million. The loan bears an annual interest rate of 5.22%, and has a loan period of 18 months. On April 12, 2019, US$5.8 million had been extended to the Company by East West Bank, and the Company will be able to further utilize the remaining credit of U$1.5 million as needed during the loan period. As a result of the above activities and plans, the Company believes that it will have adequate sources of liquidity and capital resources to support its daily operations for the next 12 months after the issuance of the consolidated financial statements. Principles of consolidation The consolidated financial statements of the Company include the financial statements of Renren Inc., its subsidiaries, its VIEs and VIEs' subsidiaries. All inter-companies transactions and balances are eliminated upon consolidation. Business combinations Business combinations are recorded using the acquisition method of accounting. The Company uses a screen test to evaluate whether a transaction should be accounted for as an acquisition and/or disposal of a business versus assets. In order for a purchase to be considered an acquisition of a business, the set of transferred assets and activities must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. If substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, then the set of transferred assets and activities is not a business. The purchase price of business acquisition is allocated to the tangible assets, liabilities, identifiable intangible assets acquired and non-controlling interest, if any, based on their estimated fair values as of the acquisition date. The excess of the purchase price over those fair values is recorded as goodwill. Acquisition-related expenses and restructuring costs are expensed as incurred. Where the consideration in an acquisition includes contingent consideration and the payment of which depends on the achievement of certain specified conditions post-acquisition, the contingent consideration is recognized and measured at its fair value at the acquisition date and if recorded as a liability, it is subsequently carried at fair value with changes in fair value reflected in earnings. Use of estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the reported amounts of revenues and expenses in the financial statements and accompanying notes. Significant accounting estimates reflected in the Company's consolidated financial statements include, but are not limited to, revenue recognition, allowance for financing receivable, allowance for doubtful accounts, share-based compensation, deferred tax valuation allowance, income taxes, value-added tax, impairment of goodwill and indefinite-lived intangible assets, long-term available-for-sale investments, and equity investment without readily determinable fair values, impairment of long-term investments, the price purchase allocation and the fair value of contingent consideration for business acquisition. Cash and cash equivalents Cash and cash equivalents consist of cash on hand. Restricted cash Restricted cash primarily consists of cash deposits used to secure debt borrowings of the Company which is expected to be released in accordance with the debt agreement. The restriction will lapse when the related debt agreement is paid off. The current portion of restricted cash represents cash deposited into bank accounts which is expected to be released within the next twelve months. The non-current portion of restricted cash represents cash deposited into bank accounts which is not expected to be released within the next twelve months. Non-current restricted cash amounted to $ 26,075 and $36,362 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 Company 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, which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The level in the hierarchy within which the fair value measurement in its entirety falls is based upon the lowest level of input that is significant to the fair value measurement as follows:  Level 1-inputs are based upon unadjusted quoted prices for identical assets or liabilities traded in active markets.  Level 2-inputs are based upon quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  Level 3-inputs are generally unobservable and typically reflect management's estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models, and similar techniques. Long-term Investments Equity method investments Equity investment in common stock or in-substance common stock of an entity where the Company can exercise significant influence, but not control, is accounted for using the equity method. Significant influence is generally considered to exist when the Company has an ownership interest in the voting stock of the investee between 20% and 50%. Other factors, such as representation on 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. An investment in in-substance common stock is an investment in an entity that has risk and reward characteristics that are substantially similar to that entity’s common stock. The Company considers subordination, risks and rewards of ownership and obligation to transfer value when determining whether an investment in an entity is substantially similar to an investment in that entity’s common stock. Under the equity method, the investment is initially recorded at cost and adjusted for the Company's share of undistributed earnings or losses of the investee. Investment losses are recognized until the investment is fully written down as the Company does not guarantee the investee's obligations nor it is committed to provide additional funding. When the Company's carrying value in an equity method affiliated company is reduced to zero, no further losses are recorded in the Company's consolidated financial statements unless the Company guaranteed obligations of the affiliated company or has committed additional funding. When the affiliated company subsequently reports income, the Company will not record its share of such income until it exceeds the amount of its share of losses not previously recognized. The Company’s management regularly evaluates the impairment of the equity investment based on performance and the financial position of the investee as well as other evidence of market value. Such evaluation includes, but is not limited to, reviewing the investee's cash position, recent financings, projected and historical financial performance, cash flow forecasts and financing needs. An impairment charge is recorded when the carrying amount of the investment exceeds its fair value and this condition is determined to be Equity Investments without Readily Determinable Fair Values Historically, for investee companies over which the Company did not have significant influence and a controlling interest, the Company accounted for these as cost method investments under ASC 325-20. In January, 2018, the Company adopted Accounting Standards Update (‘‘ASU’’) 2016-01, Financial Instruments—Recognition and Measurement of Financial Assets and Financial Liabilities, and accounts for equity investments that do not have a readily determinable fair value using the measurement alternative prescribed within ASU 2016-01, to the extent such investments are not subject to consolidation or the equity method. Under the measurement alternative, these financial instruments are carried at cost, less any impairment (assessed quarterly), plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. In addition, income is recognized when dividends are received only to the extent they are distributed from net accumulated earnings of the investee. Otherwise, such distributions are considered returns of investment and are recorded as a reduction of the cost of the investment. The Company did not record impairment losses on equity securities without readily determinable fair values during the years ended December 31, 2016, 2017 and 2018. Equity Investments with Readily Determinable Fair Values The Company adopted ASU No. 2016-01 on January 1, 2018. As a result, all equity investments with readily determinable fair values (other than those accounted for using the equity method of accounting) are measured at fair value with changes in fair value recorded in the consolidated statements of operations. Those investments were previously accounted as available-for-sale investments with changes in fair value recorded in other comprehensive income (loss). Available-for-sale investment For investments which are determined to be debt securities, the Company 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 investment is carried at its fair value and the unrealized gains or losses from the changes in fair values are included in accumulated other comprehensive (loss) income. The Company reviews its available for sale investments for other than temporary impairment based on the specific identification method. The Company considers available quantitative and qualitative evidence in evaluating potential impairment of its investments. If the cost of an investment exceeds the investment’s fair value, the Company considers, among other factors, general market conditions, government economic plans, the duration and the extent to which the fair value of the investment is less than the cost, the Company’s intent and ability to hold the investment, and the financial condition and near term prospects of the investees. If there is OTTI on debt securities, the Company separates the amount of the OTTI into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings, which represents the difference between a security’s amortized cost basis and the discounted present value of expected future cash flows. The amount due to other factors is recognized in other comprehensive (loss) income if the entity neither intends to sell and will not more likely than not be required to sell the security before recovery. The difference between the amortized cost basis and the cash flows expected to be collected is accreted as interest income. The Company did not record impairment losses on its available-for-sale investment during the years ended, 2016, 2017 and 2018. Accounts receivable and allowance for doubtful accounts Accounts receivable represents those receivables derived in the ordinary course of business from continuing operations which mainly consists of IVAS. An allowance for doubtful accounts is provided based on aging analyses of accounts receivable balances, historical bad debt rates, repayment patterns and customer credit worthiness. Financing receivable Financing receivable represents receivables derived from the internet finance business. Financing receivable is recorded at amortized cost, reduced by a valuation allowance estimated as of the balance sheet date. The amortized cost of a financing receivable is equal to the unpaid principal balance, plus net deferred origination costs. Net deferred origination costs are comprised of certain direct origination costs, net of origination fees received. Origination fees include fees charged to the individuals or companies that increase the financing’s effective yield. Direct origination costs in excess of origination fees received are included in the financing receivable and amortized over the financing term using the effective interest method. Financing origination costs are limited to direct costs attributable to originating the financing, including commissions and personnel costs directly related to the time spent by those individuals performing activities related to the origination. Allowance for financing receivable An allowance for financing receivable is established through periodic charges to the provision for financing receivable losses when the Company believes that the future collection of principal is unlikely. Subsequent recoveries, if any, are recorded as credits against the allowance. The Company evaluates the creditworthiness of its portfolio based on a pooled basis due to the composition of homogeneous financing with similar size and general credit risk characteristics for similar financing businesses. The Company considers the credit worthiness of the individuals and the companies receiving financing, aging of the outstanding financing receivable and other specific circumstances related to the financing when determining the allowance for financing receivable. The allowance is subjective as it requires material estimates including such factors as known and inherent risks in the financing portfolio, adverse situation that may affect the ability of the individuals and the companies receiving financing to repay and current economic conditions. Recovery of the carrying value of financing receivable is dependent to a great extent on conditions that are beyond the Company’s control. Nonaccrual financing receivable Financing income is calculated based on the contractual rate of the financing and recorded as financing income over the life of the financing using the effective interest method. Financing receivables are placed on non-accrual status upon reaching 90 days past due for these arising from financing for installment sales and apartment rental financing, or when reasonable doubt exists as to the full, timely collection of the financing receivable. When a financing receivable is placed on non-accrual status, the Company stops accruing financing income. Financing receivable is returned to accrual status if the related individual or company has performed in accordance with the contractual terms for a reasonable period of time and, in the Company’s judgment, will continue to make period principal and financing income payments as scheduled. The Company writes off its nonaccrual financing receivable by considering factors including (i) death of the borrower; or (ii) its inability to reach the borrower. Transfer of financial instruments Sales and transfers of financial instruments are accounted under authoritative guidance for the transfers and servicing of financial assets and extinguishment of liabilities. Through the peer-to-peer platforms and the Plans, the Company identifies individual investors and transfers creditors’ rights originated from the aforementioned financing services to the individual investors. The Company further offers different investment periods to investors with various annual interest rates while those credit rights are held by the investors. The term of the sales require the Company to repurchase those creditors’ rights from investors prior to or upon the maturity of the investment period. As a result, the sales of those creditors’ rights are not accounted for as a sale and remain on the consolidated balance sheet and are recorded as payable to investors in the Company’s consolidated balance sheet. Inventory Inventory primarily consists of the purchased used and new automobiles. Inventory cost is determined by specific identification. Net realizable value is the estimated selling price less costs to complete, dispose and transport the vehicles. Selling prices are derived from historical data and trends, such as sales price and inventory turn times of similar vehicles, as well as independent, market resources. Each reporting period the Company recognizes any necessary adjustments to reflect vehicle inventory at the lower of cost or net realizable value through cost of sales in the accompanying consolidated statements of operations. Inventory write-downs are established based on management’s review on a vehicle-by-vehicle basis for slow moving and obsolete items. On a quarterly basis, the management examines an inventory report. The vehicle is considered slow moving if it has not been sold within a 90 days period since procurement, in light of the fact that the Company’s average inventory turnover days during the years ended December 31, 2017 and 2018, were 80 days and 63 days, respectively. In estimating the level of inventory write-downs for slow moving vehicles, the Company considers historical data and forecasted customer demand, such as sales price and inventory turn times of similar vehicles with similar mileage and condition, as well as independent, market information. This valuation process requires management to make judgements, based on currently available information, and assumptions about future demand and market conditions, which are inherently uncertain. To the extent that there are significant changes to estimated vehicle selling prices or decreases in demand for used vehicles, there could be significant adjustment to reflect inventory at net realizable value. In August 2018, Shandong Jieying Huaqi Auto Service Co. ("Ji’nan Dealership", a subsidiary of the Company's VIE's) received a notice from the local police regarding an investigation of the dealership's premises. The Company believes the investigation is an isolated individual activity of the minority shareholder who holds 30% of the Ji’nan Dealership’s equity interest. Certain assets of Ji’nan Dealership are not accessible pursuant to the investigation. In connection with these events, the Company determined that it is probable that it cannot enforce the realization of the inventory value at the Ji’nan Dealership. As a result, the Company wrote off all inventory which totaled US$5.7 million during the year ended December 31, 2018. Property and equipment, net Property and equipment, net is carried at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the following estimated useful lives: Building 46 years Computer equipment and application software 2-3 years Furniture and vehicles 5 years Leasehold improvements Over the lesser of the lease term or useful life of the assets Intangible assets with indefinite lives Intangible assets with indefinite lives mainly include trademark and licenses. If an intangible asset is determined to have an indefinite life, it is not be amortized until its useful life is determined to be no longer indefinite. An intangible asset that is not subject to amortization is tested for impairment at least annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. Such impairment test consists of comparing the fair values of assets and their carrying value amounts and an impairment loss is recognized if and when the carrying amounts exceed the fair values. The estimates of fair values of intangible assets not subject to amortization are determined using various discounted cash flow valuation methodologies. Significant assumptions are inherent in this process, including estimates of discount rates. Discount rate assumptions are based on an assessment of the risk inherent in the respective intangible assets. For the years ended December 31, 2016, 2017 and 2018, the Company Impairment of long-lived assets and intangible assets with definite lives Long-lived assets, such as property and equipment and definite-lived intangible assets are stated at cost less accumulated depreciation or amortization. Depreciation and amortization is computed using the straight-line method. The Company evaluates the recoverability of long-lived assets, including identifiable intangible assets, with determinable useful lives whenever events or changes in circumstances indicate that an intangible asset's carrying amount may not be recoverable. The Company measures the carrying amount of long-lived asset against the estimated undiscounted future cash flows associated with it. Impairment exists when the sum of the expected undiscounted future net cash flows is less than the carrying value of the asset being evaluated. Impairment loss is calculated as the amount by which the carrying value of the asset exceeds its fair value. Fair value is estimated based on various valuation techniques, including the discounted value of estimated future cash flows. The evaluation of asset impairment requires the Company to make assumptions about future cash flows over the life of the asset being evaluated. These assumptions require significant judgment and actual results may differ from assumed and estimated amounts. For the years ended December 31, 2016, 2017 and 2018, the Company recorded impairment losses of $nil, $nil and $675 for definite-lived intangible assets, respectively. Goodwill Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. Goodwill is not amortized, but tested for impairment upon first adoption and annually, or more frequently if event and circumstances indicate that they might be impaired. The Company has an option to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. In the qualitative assessment, the Company considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. Based on the qualitative assessment, if it is more likely than not that the fair value of each reporting unit is less than the carrying amount, the quantitative impairment test is performed. Application of the goodwill impairment test requires judgment, including the identification of reporting units, assignment of assets and liabilities to reporting units, assignment of goodwill to reporting units, and determination of the fair value of each reporting unit. The fair value of each reporting unit is estimated using a discounted cash flow methodology. This analysis requires significant judgments, including estimation of future cash flows, which is dependent on internal forecasts, and assumptions that are consistent with the plans and estimates being used to manage the Company's business, estimation of the long-term rate of growth for the Company's business, estimation of the useful life over which cash flows will occur, and determination of the Company's weighted average cost of capital. The estimates used to calculate the fair value of a reporting unit change from year to year based on operating results and market conditions. Changes in these estimates and assumptions could materially affect the determination of fair value and goodwill impairment for the reporting unit. In performing the two-step quantitative impairment test, the first step compares the fair values of each reporting unit to its carrying amount, including goodwill. If the fair value of a reporting unit exceeds its carrying amount, goodwill is not considered impaired and the second step will not be required. If the carrying amount of a reporting unit exceeds its fair value, the second step compares the implied fair value of the affected reporting unit's goodwill to the carrying value of that goodwill. The implied fair value of goodwill is determined in a manner similar to accounting for a business combination with the allocation of the assessed fair value determined in the first step to the assets and liabilities of the reporting unit. The excess of the fair value of the reporting unit over the amounts assigned to the assets and liabilities is the implied fair value of goodwill. This allocation process is only performed for purposes of evaluating goodwill impairment and does not result in an entry to adjust the value of any assets or liabilities. An impairment loss is recognized for any excess in the carrying value of goodwill over the implied fair value of goodwill. In estimating the fair value of each reporting unit the Company estimates the future cash flows of each reporting unit, the Company has taken into consideration the overall and industry economic conditions and trends, market risk of the Company and historical information. Revenue recognition The Company recognizes revenue when control of the good or service has been transferred to the customer, generally either at the time of sale or upon delivery to a customer. The contracts have a fixed contract price and revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. The Company collect value added tax and other taxes from customers on behalf of governmental authorities at the time of sale. These taxes are accounted for on a net basis and are not included in net sales and operating revenues or cost of sales. The Company generally expense sales commissions when incurred because the amortization period would have been less than one year. These costs are recorded within selling expenses. The Company does not have any significant financing payment terms as payment is received at or shortly after the point of sale. The Company adopted the Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”) on January 1, 2018 using the modified retrospective method. ASC 606 prescribes a five-step model that includes: (1) identify the contract; (2) identify the performance obligations; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations; and (5) recognize revenue when (or as) performance obligations are satisfied. Based on the manner in which the Company historically recognized revenue, the adoption of ASC 606 did not have a material impact on the amount or timing of its revenue recognition and the Company recorded no cumulative effect adjustment upon adoption. Additionally, the Company concluded that revenue generated from internet finance services is excluded from the scope of the new revenue standard as it represents revenue within the scope of ASC 310, Receivables, which is explicitly excluded from the scope of ASC 606. The Company's revenues include revenue from its used car sales, revenue from IVAS and others as well as revenue related to its finance services. Disaggregation of Revenue The Company's revenues include revenue from its used car sales, revenue from IVAS and others as well as revenue related to its finance services. The following table illustrates the Company’s revenue disaggregated by segments: Years ended December 31, 2016 2017 2018 Renren $ 18,097 $ 21,931 $ 19,122 Auto Group 29,384 152,693 479,076 Total $ 47,481 $ 174,624 $ 498,198 The following table presents the Company’s revenues disaggregated by revenue types. Years ended December 31, 2016 2017 2018 Automobile sales $ — $ 121,084 $ 467,232 IVAS and others 18,164 24,271 28,510 Financing income 29,317 29,269 2,456 Total $ 47,481 $ 174,624 $ 498,198 Revenues from automobile sales were generated by the Auto Group segment. Revenues from IVAS and others were US$18,164, US$24,271 and US$28,510, for the years ended December 31, 2016, 2017 and 2018, respectively, among which, US$ 18,096, US$ 21,931 and US$ 18,983 were generated by the Renren segment, and the remaining IVAS and others revenues were generated by the Auto Group segment. Revenues from financing income were US$29,317, US$29,269 and US$2,456, for the years ended December 31, 2016, 2017 and 2018, respectively, among which, US$ 1, US$ nil and US$ 139 were generated by the Renren segment, and the remaining financing income revenues were generated by the Auto Group segment. Automobile sales The Company purchases automobiles from unrelated individuals, third party dealerships or manufacturers and suppliers and sells them directly to its customers through its local . The prices of used vehicles are set forth in the customer contracts which are agreed prior to delivery. The Company satisfies its performance obligation for used vehicle sales upon delivery when the transfer of title, risks and awards of ownership and control pass to the owner. The Company recognizes revenue at the agreed upon purchase price stated in the contract, including any delivery charges. When cash is received from customers prior to delivery of the vehicle, the Company records such cash as advance from customers in its consolidated balance sheet, which is immaterial as of December 31, 2018. IVAS and others The Company’s IVAS revenues mainly include live streaming revenue. The Company designs, creates and offers various virtual items for sales to users with pre-determined stand-alone selling price. Revenue related to each of consumable virtual items as a single performance obligation provided on a consumption basis, is recognized at the point in time when the virtual item is transferred directly to the users and consumed by them. The Company’s other revenues mainly include revenue generated from agency fees in connection with arrangeme

SIGNIFICANT RISKS AND UNCERTAIN

SIGNIFICANT RISKS AND UNCERTAINTIES	12 Months Ended
	Dec. 31, 2018
Risks and Uncertainties [Abstract]
SIGNIFICANT RISKS AND UNCERTAINTIES	3. SIGNIFICANT RISKS AND UNCERTAINTIES Foreign currency risk The 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 Company included aggregate amounts of $20,143 and $11,118 at December 31, 2017 and 2018, respectively, which were denominated in RMB. Concentration of credit risk Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash, cash equivalents, term deposits, short-term investment, accounts receivable, financing receivable and amounts due from related parties. The Company places their cash, cash equivalents, term deposits and short-term investment, with financial institutions with high-credit ratings and quality. The Company conducts credit evaluations of customers in online advertising and internet finance business, and requires collateral or other security from the customers for certain of the financing receivable as described in Note 7. There were no customers that accounted for 10% or more of total net revenue for the years ended December 31, 2016, 2017 and 2018. No customers accounted for 10% or more of the balance of accounts receivable or financing receivable as of December 31, 2017 and 2018.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	4. DISCONTINUED OPERATIONS Disposition of Online Gaming On November 19, 2015, the Company reached a resolution to dispose of its Online Gaming which was subsequently sold in March 2016 for a gross consideration of $17,500, of which $7,500 was related to the repayment of intercompany loans provided by the Company to its Online Gaming business. The disposal of the Online Gaming represented a strategic shift and has a major effect on the Company’s result of operations. Accordingly, assets, liabilities, revenues and expenses and cash flows related to the Online Gaming entities have been reclassified in the accompanying consolidated financial statements as discontinued operations for all periods presented. Additionally, long-lived assets classified as held for sale as of December 31, 2015 were measured at the lower of their carrying amount or fair value less cost to sell. From March 31, 2016, the Company no longer retained power of control over Online Gaming and accordingly deconsolidated the Online Gaming’s financial statement from the Company’s consolidated financial statements. On March 31, 2016, the Company calculated a gain regarding such disposition as follows: As of March 31, 2016 The proceeds $ 17,500 Less: The repayment of intercompany loans provided by the Company 7,500 Net consideration 10,000 Less: Cash and cash equivalents 15,982 Prepaid expenses and other current assets 2,737 Property and equipment, net 194 Intangible assets, net 263 Other non-current assets 1,508 Accounts payable (1,209 ) Accrued expenses and other current liabilities (7,062 ) Amount due to the Company (7,500 ) Deferred revenue (3,677 ) Net assets of Online Gaming 1,236 Less: Tax expenses 454 Gain on deconsolidation of Online Gaming $ 8,310 The condensed cash flow for the Online Gaming was as follows for the year ended December 31, 2016: Year ended December 31, 2016 Net cash provided by operating activities $ 11,171 Net cash provided by investing activities $ 25 The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the year ended December 31, 2016. Year ended December 31, 2016 Renren Games Major classes of line items constituting pretax profit (loss) of discontinued operations Net revenues $ 1,699 Cost of revenues (871 ) Selling, research and development, and general and administrative expenses (485 ) Impairment of intangible assets - Other income and expenses that are not major 150 Income from the operations of the discontinued operations, before income tax 493 Income tax expenses (102 ) Income from the operations of the discontinued operations, net of tax 391 Gain on deconsolidation of the subsidiaries, net of tax 8,310 Gain on disposal of equity method investment, net of tax - Gain from the discontinued operations, net of tax $ 8,701 All notes to the accompanying consolidated financial statements have been retrospectively adjusted to reflect the effect of the discontinued operations, where applicable. Disposition of Renren SNS In November 2018, the Company announced the proposed sale of its SNS Business which comprise of www.renren.com and its social networking service business which includes the Company's SNS platform as well as its mobile live streaming to Beijing Infinities for a combined consideration of US$ 20 US$40 As of December 31, 2018, the $ 20 On December 29, 2018, the Company calculated a gain regarding the disposal of the SNS Business as follows. As of December 31, 2018 Total proceeds $ 60,000 Less: Property and equipment, net 8 Net assets of Renren SNS 8 Less: Accumulated other comprehensive income 336 Less: Tax expenses - Gain on deconsolidation of Renren SNS $ 59,656 The carrying amounts of assets and liabilities recorded as discontinued operations in the consolidated balance sheet in connection with SNS as of December 31, 2017 were immaterial. The condensed cash flow from operating of Renren SNS Business were as follows for the years ended December 31, 2016, 2017 and 2018. The condensed cash flow from investing of Renren SNS Business were immaterial. Years ended December 31, 2016 2017 2018 Renren SNS Renren SNS Renren SNS Net cash used in operating activities (22,589 ) (8,144 ) (1,437 ) The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the years ended December 31, 2016, 2017 and 2018. Years ended December 31, 2016 2017 2018 Renren SNS Renren SNS Renren SNS Major classes of line items constituting pretax profit of discontinued operations Net revenues $ 10,956 $ 22,372 $ 19,679 Cost of revenues (9,545 ) (17,264 ) (14,997 ) Selling, research and development, and general and administrative expenses (20,279 ) (13,536 ) (7,523 ) Loss from the operations of the discontinued operations, before income tax (18,868 ) (8,428 ) (2,841 ) Income tax expenses - - - Loss from the operations of the discontinued operations, net of tax (18,868 ) (8,428 ) (2,841 ) Gain on deconsolidation of the subsidiaries, net of tax - - 59,656 (Loss) gain from the discontinued operations, net of tax $ (18,868 ) $ (8,428 ) $ 56,815 All notes to the accompanying consolidated financial statements have been retrospectively adjusted to reflect the effect of the discontinued operations, where applicable. Disposition of OPI On September 30, 2016, the Company announced a plan to spin off OPI that holds online talent show business ("Woxiu") and most of its investments in minority stakes in privately held companies. On December 22, 2016, the Company formed a special committee to review the terms of the proposed transaction. Subsequently, the Company revised the plan to substitute Beijing Zhenzhong Interactive Information Technology Co., Ltd ("Zhenzhong", a subsidiary of one of the Company's VIEs) for Woxiu. On April 30, 2018, the Company announced that OPI will offer newly issued ordinary shares of OPI in a private placement to those shareholders of Renren as of the Record Date who satisfy all three of the following criteria: (1) the shareholder is an “accredited investor,” as such term is defined under the U.S. Securities Act of 1933, as amended, (2) the shareholder is a “qualified purchaser,” as such term is defined under the U.S. Investment Company Act of 1940, as amended, and (3) the shareholder is not a resident of a jurisdiction where the offering would be illegal. Additionally, the Company also announced a cash dividend payable by Renren to all shareholders other than those shareholders who waive the cash dividend in connection with the private placement described above. The amount of the cash dividend was US$0.6125 per ordinary share of Renren. The cash dividend and the private placement are part of an integrated series of transactions designed to address concerns that Renren may be deemed to be an investment company within the meaning of the Investment Company Act. The spin off transaction was consummated on June 21, 2018 with an issuance of a total of 816,261,781 ordinary shares of OPI on June 21, 2018 to those eligible shareholders of Renren as of June 14, 2018 who validly waived the cash dividend in connection with the private placement. In addition, on June 21, 2018, US$133.7 million of cash dividends, with US$0.6125 per ordinary share of Renren, was paid to the Company's shareholders who were not accredited investors and elected to no longer remain investors of OPI subsequent to the private placement transaction. After the transaction, the Company no longer held any shares of OPI and OPI was deconsolidated from the Company's consolidated financial statements. Additionally, the Company concluded that the disposal of OPI represents a non-pro rata distribution of shares of OPI to selected shareholders combined with a cash dividend to the remaining shareholders. Accordingly, the Company has accounted the disposal at fair value. On June 30, 2018, the Company calculated a gain regarding such disposition as follows: As of June 30, 2018 Fair value of OPI $ 500,000 Less: Cash and cash equivalents 35,274 Accounts and notes receivable, net 64 Prepaid expenses and other current assets 16,344 Property and equipment, net 12 Amount due from the Company 15,190 Equity method investments 268,515 Equity investments without readily determinable fair values 144,096 Available-for-sale investment 90,615 Other non-current assets 14 Short term loan (14,336 ) Accounts payable (96 ) Accrued expenses and other current liabilities (872 ) Amount due to the Company (102,304 ) Deferred revenue (13 ) Income tax payable (910 ) Long-term liabilities (112,604 ) Other Long-term liabilities (21,430 ) Net assets of OPI 317,559 Less: tax expenses - Gain on deconsolidation of OPI $ 182,441 The following table summarizes the carrying amounts of the major classes of assets and liabilities recorded as discontinued operations in the consolidated balance sheet as of December 31, 2017. There was no discontinued operations on the balance sheet as of December 31, 2018 as the private placement was completed. As of December 31, 2017 Cash and cash equivalents $ 3,396 Accounts and notes receivable, net 162 Amounts due from related parties 15,036 Prepaid expenses and other current assets 1,957 Current assets classified as discontinued operations $ 20,551 Property and equipment, net 16 Long-term investment 530,624 Other non-current asset 23 Non-current assets classified as discontinued operations $ 530,663 Accounts payable 951 Accrued expenses and other current payables 14,021 Amount due to related parties 10,687 Deferred revenue 56 Income tax payable 925 Long-term debt - current 52,604 Current liabilities classified as discontinued operations $ 79,244 Other non-current liabilities 6,356 Non-current liabilities classified as discontinued operations $ 6,356 The condensed cash flow of OPI were as follows for the years ended December 31, 2016, 2017 and 2018: Years ended December 31, 2016 2017 2018 OPI OPI OPI Net cash provided by (used in) operating activities 52,060 7,532 (28,134 ) Net cash provided by investing activities (53,818 ) (8,450 ) 12 Net cash provided by financing activities - - 60,000 The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the years ended December 31, 2016, 2017 and 2018. Years ended December 31, 2016 2017 2018 OPI OPI OPI Major classes of line items constituting pretax profit of discontinued operations Net revenues $ 4,927 $ 5,106 $ 895 Cost of revenues (1,645 ) (3,820 ) (834 ) Selling, research and development, and general and administrative expenses (3,451 ) (3,046 ) (1,394 ) Other income (expense) 4,552 (1,424 ) 371 Interest expense (5,245 ) (5,822 ) (3,142 ) Realized loss on short-term investment (43 ) - - Impairment of long term investment (100,823 ) (113,073 ) (2,180 ) Loss from the operations of the discontinued operations, before income tax (101,728 ) (122,079 ) (6,284 ) Income tax expenses - - - (Loss) Gain of equity method investment (10,343 ) 11,255 (9,674 ) Loss from the operations of the discontinued operations, net of tax (112,071 ) (110,824 ) (15,958 ) Gain on deconsolidation of the subsidiaries, net of tax - - 182,441 (Loss) gain from the discontinued operations, net of tax $ (112,071 ) $ (110,824 ) $ 166,483 All notes to the accompanying consolidated financial statements have been retrospectively adjusted to reflect the effect of the discontinued operations, where applicable.

BUSINESS ACQUISITION

BUSINESS ACQUISITION	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business acquisition	5. BUSINESS ACQUISITION Acquisition of used car dealers in 2017 In the second half of 2017, in order to start and expand its business of used car trading, the Company completed the acquisitions of 14 unrelated used car dealerships. The acquired dealerships operate used car sales business in various cities across China. Each acquisition, while negotiated independently, was structured in a similar manner. Specifically, Shanghai Jieying, a PRC subsidiary of the Company’s VIE, initially purchased all car inventories from each dealership. The total consideration was $45,920, which was settled with a combination of cash paid by the Company amounting to $14,884 and a forgiveness of the financing receivable balances amounting to $21,201 related to financing previously provided to the dealership by the Company. The remaining balance was paid in cash in 2018. Subsequent to the car purchase, Shanghai Jieying and the shareholder of the existing car dealership (the "Seller") enter into an equity purchase agreement which requires the Seller to transfer majority interest of the dealership as follows: (1) The Seller agrees to set up a new entity to which it transfers the remaining eligible assets of the dealerships, employees, and business contracts owned and leased by the existing dealership. In turn, Shanghai Jieying agrees to subscribe for 70% of the equity interest in this entity. (2) As consideration for the above transaction, Shanghai Jieying agrees to inject cash to the acquired dealership as well as to pay the Seller contingent consideration in the form of shares of Kaixin, a Cayman subsidiary of the Company and the parent of Shanghai Jieying. Shanghai Jieying believes that structuring the acquisitions as described above allows them to avoid potential exposures or liabilities associated with the acquired entities. The purchase of cars and acquisition of the new entity were accounted for as a single transaction. The payment of the contingent consideration was initially contingent upon the successful offering of the Company as well as the performance of the acquired dealerships and after-sales service center operartors. In January 2019, as part of the Kaixin Offering further described in Note 1, Kaixin Auto entered into amendment agreements with the dealerships that allowed Kaixin Auto to settle the contingent consideration related to the acquisitions of the dealerships and after-sales service centers, by using shares of KAH. Additionally, in connection with the Kaixin offering, the Company has also agreed to bear the obligation to make these payments and indemnify Kaixin for the related liabilities. The amount of consideration is measured based on the operating performance of the acquired dealerships both prior to and subsequent to the future offering transaction of Kaixin, and the number of shares expected to be issued will be calculated based on the issuance price of the offering. Such contingent consideration includes two components that will require the Company to issue the shares at different times. The first issuance will be made upon the successful offering of Kaixin and is calculated based on a percentage of the cumulative operating results of the acquired dealerships between the acquisition date and the date of the offering. The second issuance will be made in five equal annual installments after the successful offering of Kaixin and will be calculated based on a percentage of the trailing 12 months operating results of the acquired dealerships leading up to the successful offering, and will be subject to adjustments based on the future financial performance of each acquired dealership. The contingent issuance of shares is not dependent on whether the previous dealership owner remains employed with the Company. The total purchase price of these 14 acquisitions consisted of a cash injection to the dealerships amounting to $17,580, of which $7,240 was paid as of December 31, 2017, and contingent consideration with a fair value of amounting to $66,794 which is recorded in contingent consideration on the consolidated balance sheet. Each acquisition was recorded using the acquisition method of accounting. Accordingly, the acquired assets and liabilities were recorded at their fair value at the date of acquisition. The purchase price allocation described below was based on a valuation analysis that utilized and considered generally accepted valuation methodologies such as the income, market and cost approach. The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Company determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. Subsequent to the date of each acquisition, the Company remeasured the estimated fair values of the contingent consideration at each reporting date. For the year ended December 31, 2017, the Company recorded $2,601 in changes in fair value of contingent consideration in the Company’s consolidated statements of operations as a result of the Company’s re-measurement of the estimated fair value of the contingent consideration at the reporting date. Acquisition of Shandong, Chongqing and Wuhan in 2017 On July 20, 2017, July 3, 2017, October 27, 2017, the Company entered into an equity purchase agreement (as described above) with Shandong, Chongqing and Wuhan for a total purchase price of $18,585, $10,112 and $7,284 respectively. Prior to the agreement, the Company purchased all the car inventories from the above dealerships amounting to $3,721, $2,791 and $8,786, respectively. The Company further paid an aggregate of $2,951 for the car inventory during the year ended December 31, 2017 and forgave an aggregate of $6,995 of financing receivable previously provided to those dealerships. The remaining balance was paid in cash in 2018. The allocation of the purchase prices for those three significant acquisitions as of the date of the acquisition are summarized as below: Shandong Chongqing Wuhan Cash $ - $ 2,727 $ - Goodwill 26,550 11,719 10,405 Noncontrolling interest 7,965 4,334 3,121 The purchase price comprised of: — Cash consideration - 818 - — Contingent consideration 18,585 9,294 7,284 Total $ 18,585 $ 10,112 $ 7,284 Other acquisitions of used car dealerships in 2017 During the second half of 2017, the Company further entered into separate equity purchase agreements (as described above) with an additional 11 individually insignificant car dealerships. Prior to the agreement, the Company purchased all the car inventories from each dealership amounting to $30,622. The Company paid an aggregate of $11,933 during the year ended December 31, 2017 and forgave an aggregate of $14,206 of financing receivable previously provided to those dealerships. The remaining balance was paid in 2018. The allocation of the purchase price for those insignificant acquisition is presented on a combined basis as follows: Other used car dealer acquisitions Cash $ 1,270 Goodwill 38,317 Noncontrolling interest 11,876 The purchase price comprised of: — Cash consideration 381 — Contingent consideration 27,330 Total $ 27,711 The goodwill is mainly attributable to intangible assets that cannot be recognized separately as identifiable assets under US GAAP, and comprise of (a) the assembled work force and (b) the expected but unidentifiable business growth as a result of the synergies resulting from these acquisitions. The following information summarizes the results of operations attributable to the acquisitions included in the Company’s consolidated statement of operations since the acquisition date: Year ended December 31, 2017 Shandong Chongqing Wuhan Others Net revenues $ 33,263 $ 17,290 $ - $ 71,483 Net gain (loss) $ 1,383 $ 180 $ (10 ) $ (1,652 ) Subsequent to the issuance of the Company’s 2017 consolidated financial statements on May 14, 2018, the results of operations attributable to the acquisitions since the acquisition date have been corrected from the amounts previously reported to include revenue related to automobile sales related to those acquisitions. Pro forma information of acquisitions Supplementary pro-forma revenues and net earnings for the combined entity, as if business combination had been acquired as of January 1, 2016 were not included as it is impracticable since the used car dealerships and after-sales service centers historically did not have sound accounting systems to maintain reliable accounting records prior to the acquisitions and creating reliable accounting records would require an unreasonably significant amount of effort and resources. Post-acquisition, the newly established entities began to create and maintain accounting records. Acquisition of TruckerPath Inc. In December 19, 2014, the Company invested and paid $11,500 to obtain 29% equity interests in TruckerPath Inc. to expand the business of value-added-service platform. The investment was initially recognized as an equity-method investment as the Company concluded that it had significant influence over the operations of TruckerPath Inc. In December 2017, the Company acquired an additional 71% equity interests in TruckerPath Inc. for a total consideration of $7,616. The acquisition resulted in the Company obtaining control of TruckerPath Inc. with an ownership of 100% equity interests. The purchase price consists of the following: US$ Consideration $ 7,616 Fair value of the 29% equity interests: Carrying amount 5,587 Gain on re-measurement of fair value of noncontrolling equity investment (2,903 ) Total $ 10,300 The Company recognized an investment gain of $2,903 in realized gain from investment as a result of remeasuring the 29% equity interests immediately to fair value before the business combination. The acquisition was recorded using the acquisition method of accounting. Accordingly, the acquired assets and liabilities were recorded at their fair value at the date of acquisition. The acquisition-date fair value of the equity interests held by the Company immediately prior to the acquisition date was measured at fair value using a discounted cash flow method and taking into account certain factors including the management projection of discounted future cash flow and an appropriate discount rate. The purchase price allocation described below was determined by the Company with the assistance of an independent valuation appraiser. The acquired net assets were recorded at their estimated fair values on the acquisition date. The goodwill is mainly attributable to intangible assets that cannot be recognized separately as identifiable assets under US GAAP, and comprise of (a) the assembled work force and (b) the expected but unidentifiable business growth as a result of the synergy resulting from the acquisition. The acquired goodwill is not deductible for tax purposes. The purchase price was allocated as of December 28, 2017, the date of acquisition as follows: Amortization US$ period Net working capital $ 139 Other current assets 5,016 Intangible assets Customer relationship 610 3 Technology platform 325 Trade name 540 3 Goodwill 7,952 Other current liabilities (4,282 ) Total $ 10,300 Pro forma information of acquisitions The following unaudited pro forma information summarizes the results of operations for the years ended December 31, 2016 and December 31, 2017 of the Company as if the acquisition had occurred on January 1, 2016. There were no material nonrecurring pro-forma adjustments incurred. The following pro forma financial information is not necessarily indicative of the results that would have occurred had the acquisition been completed at the beginning of the periods indicated, nor is it indicative of future operating results: For the years ended December 31, 2016 December 31, 2017 Pro forma net revenues $ 63,404 $ 203,391 Pro forma net loss $ (193,704 ) $ (116,397 ) Other acquisitions in 2017 In 2017, the Company acquired 100% equity interests in Sindeo Inc. ("Sindeo") and Geographic Farming LLC ("Geofarm"). The total consideration for these two acquisitions amounted to $4,326, which was paid in cash during 2017. The acquisition was recorded using the acquisition method of accounting, accordingly, the acquired assets and liabilities were recorded at their fair value at the date of acquisition. The Company recorded $3,251 and $1,460 of goodwill from the acquisition of Sindeo and Geofarm, respectively. Such acquisitions were not material to the Company's consolidated financial statements during the year ended December 31, 2017. Acquisition of used car dealers and after-sales service centers in 2018 During the year ended December 31, 2018, the Company completed the acquisition of three after-sales centers, Jinan Zhoushuo Yidong Automobile Trading Co., Ltd. (“Jinan Zhoushuo”), Chongqing Zhoushuo Xingqi Automobile Service Co., Ltd. (“Chongqing Zhoushuo”) and Suzhou Zhoushuo Lujie Automobile Service Co., Ltd. (“Suzhou Zhoushuo”), and one additional dealership, Shanxi Jieying Weilan Automobile Sales Co., Ltd. (“Shanxi”). The structure of these acquisitions are consistent with the acquisition in 2017. The Company initially purchased all inventories, from each dealership and after-sales service center, The Company subsequently entered into equity purchase agreement to purchase the new entity set up by the owners of each dealership and after-sales service center. Subsequent to the date of each acquisition, the Company measured the estimated fair values of the contingent consideration at each reporting date. For the year ended December 31, 2018, the Company recorded $29,604 in fair value change of contingent consideration, which was recorded as other expenses in the Company’s consolidated statements of operations as a result of the re measurement of the estimated fair value of the contingent consideration at the reporting date. Acquisition of Shanxi in 2018 On April 8, 2018, the Company entered into equity purchase an agreement with Shanxi. The Company initially purchased the car inventories from the dealership which were recorded at fair value. The Company subsequently entered into equity purchase agreement to purchase the new entity set up by the owner of Shanxi used car dealership. As consideration for the transaction, the Company agreed to (1) pay cash consideration which includes partial consideration for the cars purchased as well as capital injection to the entities acquired, (2) forgive financing receivable outstanding that was previously provided by the Company to the used car dealerships and (3) provide contingent consideration to be paid upon the successful offering of the Company. The allocation of the purchase price for this acquisition as of the date of the acquisition is summarized as below: Shanxi Cash $ - Capital injection receivable 1,360 Inventory 4,604 Goodwill 3,917 Noncontrolling interest 1,175 The purchase price comprised of: — Cash consideration 4,536 — Forgiveness of financing receivable 1,428 — Contingent consideration 2,742 Total $ 8,706 The following information summarizes the results of operations attributable to the acquisition included in the Company’s consolidated statement of operations since the acquisition date: Year ended December 31, 2018 Net revenues $ 20,135 Net gain $ 752 Acquisitions of after-sales service centers During the first half of 2018, the Company further entered into separate equity purchase agreements with three after-sales service centers individually. Each acquisition, negotiated independently, was structured in a similar manner whereby, Shanghai Zhoushuo Automobile Technology Co., Ltd, (“Shanghai Zhoushuo”), a subsidiary of the Company, initially purchased all inventories from each after-sales service center. Subsequent to the purchase, Shanghai Zhoushuo and the shareholder of each of the existing after-sales service center (the “Seller”) entered into an equity purchase agreement which requires the Seller to transfer majority interest of the dealership as follows: (1) The Seller agrees to set up a new entity to which it transfers the remaining eligible assets of the after-sales service center, employees, and business contracts owned and leased by the existing after-sales service center. In turn, Shanghai Zhoushuo agrees to subscribe for 70% of the equity interest in this entity. (2) Shanghai Zhoushuo agrees to inject cash to the newly formed entity described in the preceding paragraph as well as to pay the Seller contingent consideration in the form of shares of the Company, the parent of Shanghai Zhoushuo. The Company believes that structuring the acquisitions as described above allows them to avoid potential exposures or liabilities associated with the acquired entities. The purchase of inventories and acquisition of the new entity were accounted for as a single transaction. The payment of the contingent consideration was initially contingent upon the successful offering of the Company as well as the performance of the acquired dealerships and after-sales service center operartors. In January 2019, as part of the Kaixin Offering further described in Note 1, Kaixin Auto entered into amendment agreements with the dealerships that allowed Kaixin Auto to settle the contingent consideration related to the acquisitions of the dealerships and after-sales service centers, by using shares of KAH. The amount of consideration is measured based on the operating performance of the acquired after-sales service centers both prior to and subsequent to the future offering transaction of the Company, and the number of shares expected to be issued will be calculated based on the offering price. Such contingent consideration will require the Company to issue the shares at different times. The issuance will be made in four installments, 12-month apart, upon the successful offering of the Company and is calculated based on a percentage of each 12-months cumulative operating results of the acquired after-sales service centers after the acquisition date under different multiples. The contingent issuance of shares is not dependent on whether the previous after-sales service centers owner remains employed with the Company. Acquired assets and liabilities were recorded at their fair value at the date of acquisition. The purchase price allocation described below was based on a valuation analysis that utilized and considered generally accepted valuation methodologies such as the income, market and cost approach. The determination and allocation of fair values to the identifiable assets acquired, liabilities assumed and noncontrolling interests is based on various assumptions and valuation methodologies requiring considerable judgment from management. The most significant variables in these valuations are discount rates, terminal values, the number of years on which to base the cash flow projections, as well as the assumptions and estimates used to determine the cash inflows and outflows. The Company determines discount rates to be used based on the risk inherent in the related activity’s current business model and industry comparisons. Terminal values are based on the expected life of assets, forecasted life cycle and forecasted cash flows over that period. As consideration for the transactions, the Company agreed to (1) pay cash consideration which includes capital injection to the entity acquired and (2) contingent consideration to be paid upon the successful offering of the Company. The allocation of the purchase price for the acquisitions are presented as follows: After-sales service centers Capital injection receivable $ 651 Inventory 35 Goodwill 16,244 Noncontrolling interest 4,873 The purchase price comprised of: — Cash consideration 686 — Contingent consideration 11,371 Total $ 12,057 The goodwill is mainly attributable to intangible assets that cannot be recognized separately as identifiable assets under US GAAP, and comprise of (a) the assembled work force and (b) the expected but unidentifiable business growth as a result of the synergies resulting from these acquisitions. The following information summarizes the results of operations attributable to the acquisitions included in the Company’s consolidated statement of operations since the acquisition dates: Year ended December 31, 2018 Chongqing/ Suzhou/ Jinan Zhoushuo Net revenues $ 341 Net loss $ (582 ) Pro forma information of acquisitions in 2018 Supplementary pro-forma revenues and net earnings for the combined entity, as if business combination had been acquired as of January 1, 2016 were not included as it is impracticable since the used car dealerships and after-sales service centers historically did not have sound accounting systems to maintain reliable accounting records prior to the acquisitions and creating reliable accounting records would require an unreasonably significant amount of effort and resources. Post-acquisition, the newly established entities began to create and maintain accounting records.

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
ACCOUNTS RECEIVABLE	6. ACCOUNTS RECEIVABLE Accounts receivable consists of the following: As of December 31, 2017 2018 Accounts receivable $ 8,828 $ 5,219 Allowance of doubtful accounts (2,730 ) (2,635 ) Accounts receivable, net $ 6,098 $ 2,584 Accounts receivable mainly represent amounts earned under advertising contracts and IVAS business at the respective balance sheet dates. These amounts become billable according to the contract term. Movement of allowance for doubtful accounts is as follows: As of December 31, 2016 2017 2018 Balance at beginning of year $ 2,942 $ 2,640 $ 2,730 Charge to (income) expenses (112 ) 130 52 Exchange difference (190 ) (40 ) (147 ) Balance at end of year $ 2,640 $ 2,730 $ 2,635

FINANCING RECEIVABLE

FINANCING RECEIVABLE	12 Months Ended
	Dec. 31, 2018
Loans Receivable, Net [Abstract]
FINANCING RECEIVABLE	7. FINANCING RECEIVABLE Financing receivable consists of the following: As of December 31, 2017 2018 Current financing receivable Used car financing $ 129,018 $ 9,846 Financing for installment sales 2,177 1,654 Other financing 1,306 1,243 Net deferred origination costs - - Less allowance for financing receivable (7,023 ) (9,257 ) Current financing receivable, net $ 125,478 $ 3,486 Long-term financing receivable Used car financing $ 8 $ - Financing for installment sales - - Less allowance for long-term financing receivable - - Long-term financing receivable, net $ 8 $ - Financing receivable mainly represents both the principal and financing income receivable associated with the respective financing services expected to be collected from the individuals or companies receiving financing under the internet finance business at the respective balance sheet dates. Used car financing is secured with pledged assets, which are used cars with value not less than the financing receivable. Other financing includes financing receivable related to rental financing provided to individuals referred by rental agents as well as micro cash financing to college students which ceased during the year ended December 31, 2016. The Company has ceased granting new loans for the used car financing since January 2018, but continues to service the outstanding loans until maturity. The following table presents nonaccrual financing receivable as of December 31, 2017 and 2018, respectively. As of December 31, 2017 2018 Used car financing $ 7,373 $ 9,838 Financing for installment sales 2,051 1,654 Other financing 1,286 1,243 $ 10,710 $ 12,735 The following table presents the past-due aging of financing receivable as of December 31, 2018. 0 – 90 days over 90 days total current total Used car financing $ - $ 9,838 $ 9,838 $ 8 $ 9,846 Financing for installment sales 1,654 1,654 1,654 Other financing - 1,243 1,243 - 1,243 $ - $ 12,735 $ 12,735 $ 8 $ 12,743 The following table presents the past-due aging of financing receivable as of December 31, 2017. 0 – 90 days over 90 days total current total Used car financing $ 9,654 $ 7,373 $ 17,027 $ 111,999 $ 129,026 Financing for installment sales 229 1,948 2,177 2,177 Other financing 138 1,168 1,306 - 1,306 $ 10,021 $ 10,489 $ 20,510 $ 111,999 $ 132,509 Movement of allowance for financing receivable is as follows: As of December 31, 2016 2017 2018 Balance at beginning of year $ (3,583 ) $ (15,114 ) $ (7,023 ) Charge to cost of revenues (12,436 ) (12,745 ) (10,802 ) Write off of financing receivable 119 22,178 7,786 Exchange difference 786 (1,342 ) 782 Balance at end of year $ (15,114 ) $ (7,023 ) $ (9,257 ) For the years ended December 31, 2016, 2017 and 2018, the Company considered loan principal and financing income receivables meeting any of the following conditions as uncollectible and has further written them off: (i) death of the borrower; or (ii) unable to reach the borrower. The Company outsourced almost all of its collection effort to third-party collection agencies.

PREPAID EXPENSES AND OTHER CURR

PREPAID EXPENSES AND OTHER CURRENT ASSETS	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
PREPAID EXPENSES AND OTHER CURRENT ASSETS	8. PREPAID EXPENSES AND OTHER CURRENT ASSETS As of December 31, Note 2017 2018 Advances to third parties (i) $ 14,325 $ 30,787 Prepaid expenses 3,919 4,144 Deposits 4,294 340 Loan to third parties 2,720 4,029 Funds receivable (ii) 3,880 1,477 Disposal of Mapbar Technology Limited (”Mapbar”) 4,585 - Disposal of online wealth management business 3,482 2,388 Other receivable (iii) 4,209 362 Other current assets 6,812 5,988 Total $ 48,226 $ 49,515 (i) Advances to third parties mainly represents cash advanced to third party dealerships for car purchase. Specifically, some of the advances to third parties relates to consignment sales, in which the Company acts as an agent and assists other third party dealerships in the sale of their cars by allowing them to move their cars to the Company’s own lot. The Company pays those third party dealerships an advance amounting to the value of the car. The Company agrees to market those cars and if successfully sold, receives a commission from those third party dealerships. The Company does not take title to the cars and merely acts as an agent. The advance is subsequently settled either (1) when the car is sold by the Company or (2) if the car is not sold, the cash is remitted back to the Company by the third party dealership. The balance was substantially collected after December 31, 2018 and the commission earned from the above arrangements is immaterial for the years ended December 31, 2017 and 2018. (ii) Funds receivable mainly represents balances paid by individuals for repayments of financing on Renren Fenqi as well as amounts paid by investors for investments made on Renren Licai that are held at a third party electronic payment service provider as of December 31, 2017 and 2018. The balances were collected subsequent to year-end. (iii) Other receivable represents cash advanced to customers of third party dealerships for purchase of cars for which loans were approved by a bank but for which the customers has not yet received the cash. The amount was subsequently collected by the Company after year-end.

SHORT-TERM INVESTMENTS

SHORT-TERM INVESTMENTS	12 Months Ended
	Dec. 31, 2018
Short-term Investments [Abstract]
SHORT-TERM INVESTMENTS	9. SHORT-TERM INVESTMENTS Short-term investments comprise of marketable securities which are classified as trading and derivative financial instruments that are regarded as assets. Trading securities During the years ended December 31, 2016 and 2017, the Company purchased and sold several trading securities and recorded $577 of gain and $100 of loss in the consolidated statements of operations. As of December 31, 2017 and 2018, the Company did not hold any trading securities.

LONG-TERM INVESTMENTS

LONG-TERM INVESTMENTS	12 Months Ended
	Dec. 31, 2018
Long-term Investments [Abstract]
LONG-TERM INVESTMENTS	10. LONG-TERM INVESTMENTS As of December 31, Note 2017 2018 Equity method investments: Plum Inc. (i) $ 7,407 $ 5,581 Fundrise, L.P. (ii) 11,042 11,319 Others (iii) 3,731 2,714 Total equity method investments 22,180 19,614 Equity investments without readily determinable fair values Suzhou Youge Interconnection Venture Capital Center 768 727 Total equity investments without readily determinable fair values 768 727 Equity investment with readily determinable fair values: Hylink Advertising Co., Ltd. (iv) 9,794 - Total equity investment with readily determinable fair values 9,794 - Available-for-sale investment Plum Inc. (i) 2,000 2,000 Total Available-for-sale investment 2,000 2,000 Total long-term investments $ 34,742 $ 22,341 (i) In August 2015, the Company entered into agreements to purchase 2,304,205 Series A Preferred Shares issued by Plum Inc. for a total consideration of $10,500. The Company held 26.64% and 19.64% equity interest of Plum Inc. as of December 31, 2017 and 2018, respectively and recognized its share of loss in Plum Inc. of $1,352, $1,452 and $1,826 for the years ended December 31, 2016, 2017 and 2018, respectively. The Company accounted for this investment as equity method as of December 31, 2017 and 2018 as it believes it is able to exert significant influence through its board seat held by the Company. In January 2017, the Company entered into agreements to purchase convertible promissory note issued by Plum Inc. for a total consideration of $2,000. (ii) In October 2014, the Company entered into an agreement to purchase limited partnership interest of Fundrise, L.P. for a total consideration of $10,000. The Company held 98.04% equity interest as of December 31, 2017 and 2018 and recognized its share of gain of $249, $148 and $276 for the years ended December 31, 2016, 2017 and 2018, respectively. (iii) Others represents other equity method investments with individual carrying amounts less than $1,500 as of December 31, 2017 and 2018, respectively. The summarized financial information for all of the Company’s equity method investments were as follows: As of December 31, 2017 2018 Total current assets $ 6,385 $ 21,015 Total assets $ 26,055 $ 33,181 Total current liabilities $ 1,867 $ 2,584 Total liabilities $ 7,657 $ 11,008 For the years ended December 31, 2016 2017 2018 Net revenues $ 1,217 $ 1,931 $ 3,021 Gross (loss) profits $ (545 ) $ (99 ) $ 616 Loss from continuing operations $ (9,356 ) $ (4,391 ) $ (9,137 ) Net loss $ (9,356 ) $ (4,391 ) $ (9,137 ) Equity Investment with Readily Determinable Fair Values (iv) In April 2011, the Company acquired 2% equity interest of Hylink Advertising Co., Ltd. at total cash consideration of $2,381. Hylink is mainly engaged in advertising agency service. The Company was not able to exercise significant influence over the operating and financial decisions of Hylink, and thus the Company used the cost method to account for its investment. In August 2017, Hylink successfully listed on the Shanghai Stock Exchange in China. The Company reassessed and classified the investment as available for sales. Unrealized holding gains of $7,489

PROPERTY AND EQUIPMENT, NET

PROPERTY AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT, NET	11. PROPERTY AND EQUIPMENT, NET As of December 31, 2017 2018 Building $ 32,002 $ - Computer equipment and application software 17,733 8,309 Furniture and vehicles 295 540 Leasehold improvements 765 1,053 $ 50,795 $ 9,902 Less: Accumulated depreciation $ (21,196 ) $ (8,347 ) Less: Accumulated impairment loss (90 ) - $ 29,509 $ 1,555 Depreciation expense from continuing operations was $2,593, $ 1,968 $ 85 6 In May 2018, the Company sold its building located in Shanghai, China to a third party for a total consideration of $60,388 25,928 No impairment loss was recorded for the years ended December 31, 2016, 2017 and 2018, respectively.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	12. Goodwill Amount Balance at January 1, 2017 - Addition in goodwill related to acquisitions $ 99,654 Exchange difference 2,283 Balance at December 31, 2017 101,937 Addition in goodwill related to acquisitions 22,445 Subtraction in goodwill related to disposals (4,741 ) Impairment loss (29,055 ) Exchange difference (6,152 ) Balance at December 31, 2018 $ 84,434 The Company’s goodwill reflects the excess of the consideration paid or transferred including the fair value of contingent consideration over the fair values of the identifiable net assets acquired. The majority of the goodwill balance relates to the various used car dealerships and after-sales service centers acquired during the two years ended December 31, 2018 as well as to other acquisitions which were individually deemed insignificant. Refer to Note 5 for further details. To assess potential impairment of goodwill, the Company performs an assessment of the carrying value of the reporting unit at least on an annual basis or when events occur or circumstances change that would more likely than not reduce the estimated fair value of the reporting unit below its carrying value. If the carrying value of a reporting unit exceeds its fair value, the Company would perform the second step in its assessment process and record an impairment loss to earnings to the extent the carrying amount of the reporting unit's goodwill exceeds its implied fair value. The Company estimates the fair value of its reporting units through internal analysis and external valuations, which utilize the income approach through the application of discounted cash flow methods. The Company estimates the fair value of its reporting units through internal analysis and external valuations, which utilize the income and market approaches through the application of discounted cash flow methods. These valuations are based on a number of estimates and assumptions, including the projected future operating results of the reporting unit, discount rates, long-term growth rates and market comparable. During the years ended December 31, 2016 and 2017, the Company did not record any impairment charges related to goodwill. During the year ended December 31, 2018, following the investigation of the Ji'nan Dealership, Kaixin transferred its equity interest in the Ji'nan Dealership and the related assets to an affiliate of the Company. Following the transfer, the Company closed the dealership. As a result of the above, the Company performed an impairment analysis and fully impaired the goodwill related to the Ji'nan Dealership amounting to $25,804. The Company acquired Sindeo in 2017. During the year ended December 31, 2018, the Company performed its goodwill impairment testing and determined there was an impairment. As a result, the entire balance of goodwill associated with Sindeo and amounting to US$3,251 was written off.

SHORT - TERM DEBT AND LONG-TERM

SHORT - TERM DEBT AND LONG-TERM DEBT	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
SHORT-TERM DEBT AND LONG-TERM DEBT	13. SHORT - TERM DEBT AND LONG-TERM DEBT Short-term debt As of December 31, Note 2017 2018 Bank of Shanghai (i) $ 12,296 $ 21,817 Hengfeng Bank (ii) 49,183 - Bank of Beijing (iii) - 20,798 Others (v) - 7,272 Total $ 61,479 $ 49,887 (i) In May and August 2017, the Company entered into five short-term loan agreements with Bank of Shanghai for $ 12,296 137.9 149.4 In February 2018, the company entered into a loan agreement with Shanghai Bank for $10,181. The loan bears an annual interest rate of 130% over the one-year loan interest rate quoted by the People’s Bank of China and has a loan period of one year. The Company repaid the loan in February 2019. In April and May 2018, the Company entered into two loan agreements with Shanghai Bank for $11,636 in aggregate. Both loans bear an annual interest rate of 140% over the one-year loan interest rate quoted by the People’s Bank of China and have a loan period of one year. $7,272 of the loan was due in April 2019 and were repaid by the Company. (ii) The loan obtained from Hengfeng Bank in 2017 had been repaid by the Company in May 2018. (iii) In March, May and June 2018, the Company entered into four loan agreements with Bank of Beijing for $ 20,798 0.05 1.355 14,544 (v) In January 2018, the Company entered into two loan agreements with a third party individual for a total amounting to $ 6,109 10 In February 2018, the Company entered into a loan agreement with a third party for $787 with an annual interest rate of 9%, which was due in March 2018. The Company repaid the loan in March 2018. In April, May, June, July, August and September 2018, the Company entered into eighteen loan agreements with an individual for $17,787 in aggregate. The loans all bear an annual interest rate of 10.8% and have a period of one month. $17,496 was repaid in May and June 2018, and the remaining balance of $291 was repaid in October 2018. In August 2018, the Company entered into two loan agreements with an individual for $872 in aggregate. The loans both bear an annual interest rate of 10.8% and have a period of two months and four months, respectively. Upon maturity, the Company further renewed the loans for another 12 months with the same interest rate. In October 2018, the Company entered into a loan agreement with the individual for $291. The loan bears an annual interest rate of 10.8 Long-term debt As of December 31, Note 2017 2018 Hengfeng Bank (ii) 27,665 - East West Bank (iv) 20,000 35,000 Total $ 47,665 $ 35,000 (iv) In December 2016, the Company entered into a short-term loan agreement with East West Bank for $ 30,000 10,000 LIBOR rate plus 1.2% 20,000 During the year ended December 31, 2018 , the Company repaid $12,000 and additionally borrowed $27,000 from East West Bank. The maturity date of the remaining balance will be April 3, 2020 and the remaining loan balance bears an annual interest rate equal to LIBOR rate plus 1.2%

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	14. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES As of December 31, 2017 2018 Employee payroll and welfare payables $ 3,182 $ 1,738 Other tax payable 12,650 14,119 Accrued professional, marketing and leasing fees 6,017 6,035 Advance from customers 6,220 4,078 Other payables 3,808 7,085 Total $ 31,877 $ 33,055

PAYABLE TO INVESTORS

PAYABLE TO INVESTORS	12 Months Ended
	Dec. 31, 2018
Payable To Investors [Abstract]
PAYABLE TO INVESTORS	15. PAYABLE TO INVESTORS In the ordinary course of business, through the peer-to-peer platforms and the Company's Plans, the Company identifies investors and transfers creditors' rights to those investors. The Company further offers different investment periods to investors with various annual interest rates while those credit rights are held by the investors. The terms of the sales require the Company to repurchase those creditors’ rights from investors prior to or upon the maturity of the investment period. As a result, the sales of those creditors’ rights are not accounted for as a sale and remain on the consolidated balance sheet and are recorded as payable to investors in the Company’s consolidated balance sheet. The financing business was terminated in May 2018 along with the expiration of the Company’s Plan on May 17, 2018 Payable to investors includes payable with terms shorter than one year as well as the current portion of the payable to investors. Fixed annual As of December 31, Rate (%) Term 2017 2018 Short-term payable to investors (i) 8.6% - 11.0% 15 $ 142,689 $ 15 (i)

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	16. INCOME TAXES The Company, CIAC, Renren Gongying Inc. Link224 Inc., Wole Inc., JiehunChina Inc., Kaixin Auto Group, Renren CRSP Holdings Inc., Renren PLML Holdings Inc., Renren KURY Holdings Inc., Renren ONER Holdings Inc., Renren LSTAR Holdings Inc., Renren BLCR Holdings Inc., Renren ZHCH Holdings Inc.and Renren Finance Inc. are all incorporated in the Cayman Islands. Under the current laws of the Cayman Islands, the companies are not subject to income or capital gains taxes. Chime Technologies, Inc., Renren U.S. Holdco, Inc., Sindeo Inc., Lucrativ, Inc., Geographic Farming LLC and Trucker Path Inc. are incorporated in the US and subject to state income tax and federal income tax at different tax rates, depending upon taxable income levels. They did not have taxable income and no income tax expense was provided for the years ended December 31, 2016, 2017 and 2018. Jet Sound Hong Kong Company Limited, Renren Winday Company Limited, Fenqi Winday Company Limited., Renren Game Hong Kong Limited, Renren Giantly Limited. and Renren Gentle Height Company Limited. were incorporated in Hong Kong and is subjected to Hong Kong profits tax. With effect from 1 April 2018, a two-tiered profits tax rates regime applies. The profits tax rate for the first HKD 2 million of corporate profits is 8.25%, while the standard profits tax rate of 16.5% remains for profits exceeding HKD 2 million. No provision for Hong Kong profits tax has been made as they have no assessable profits in Hong Kong in the fiscal years ended December 31, 2016, 2017 and 2018. Renren Giantly Philippines Inc was established in 2018 and incorporated in the Philippines, which is subject to 30% Other subsidiaries and VIEs of the Company domiciled in the PRC were subject to 25% statutory income tax rate in the years presented. The EIT Law includes a provision specifying that legal entities organized outside PRC will be considered residents for Chinese income tax purposes if their place of effective management or control is within the PRC. If legal entities organized outside PRC were considered residents for Chinese income tax purpose, they would become subject to the EIT Law on their worldwide income. This would cause any income from legal entities organized outside PRC earned to be subject to PRC's 25% EIT. The Implementation Rules to EIT Law provide that non-resident legal entities will be considered as PRC residents if substantial and overall management and control over the manufacturing and business operations, personnel, accounting, properties, etc. reside within PRC. Beijing Qilin Wings Technology Development Co., Ltd., incorporated in the PRC on January 16, 2013, qualified as a “High and New Tech Enterprise” in 2017, and therefore was entitled to a preferential tax rate of 15% for the following three years. Despite the present uncertainties resulting from the limited PRC tax guidance on the issue, the Company does not believe that the legal entities organized outside the PRC should be characterized as PRC residents for EIT Law purposes. Under the EIT Law and its implementation rules which became effective on January 1, 2008, dividends generated after January 1, 2008 and payable by a foreign-invested enterprise in 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. The Cayman Islands, where the Company is incorporated, does not have a tax treaty with PRC. The Company's subsidiaries and VIEs located in the PRC had aggregate accumulated deficits as of December 31, 2018. Accordingly, no deferred tax liability had been accrued for the Chinese dividend withholding taxes as of December 31, 2018. The current and deferred component of income tax expenses which were substantially attributable to the Company's PRC subsidiaries and VIEs and VIEs' subsidiaries, are as follows: Years ended December 31, 2016 2017 2018 Current income tax expenses $ 2,470 $ 4,479 $ 9,850 Deferred income tax expenses - - - Total income tax expenses $ 2,470 $ 4,479 $ 9,850 The principal components of the deferred tax assets and liabilities are as follows: As of December 31, 2017 2018 Deferred tax assets Provision for doubtful accounts $ 3,422 $ 7,847 Accrued payroll and welfare 809 390 Accrued liabilities 2,414 3,764 Long term investment impairment 2,328 - Excessive advertising fee 1,990 1,416 Excessive employee education fee 161 80 Goodwill and intangible asset impairment - 7,276 Net operating loss carry forwards 55,745 45,543 Less valuation allowance (66,869 ) (66,316 ) Deferred tax assets, net $ - $ - Deferred tax liabilities $ - $ - The Company operates through multiple subsidiaries and VIEs and VIEs' subsidiaries. The valuation allowance is considered on each individual entity basis. The subsidiaries and VIEs and VIEs' subsidiaries registered in the PRC have total deferred tax assets related to net operating loss carry forwards of $55,745 and $45,543 as of December 31, 2017 and 2018, respectively. The Company assessed the available evidence to estimate if sufficient future taxable income would be generated to use the existing deferred tax assets. As of December 31, 2017 and 2018, valuation allowances were established because the Company believes that it is more likely than not that its deferred tax assets will not be realized as it does not expect to generate sufficient taxable income in the near future. Reconciliation between the income tax expenses computed by applying the PRC tax rate to loss before the provision of income taxes and the actual provision for income taxes is as follows: Years ended December 31, 2016 2017 2018 Loss before provision of income tax $ (52,804 ) $ (42,757 ) $ (146,504 ) PRC statutory income tax rate 25 % 25 % 25 % Income tax at statutory tax rate (13,201 ) (10,689 ) (36,626 ) Taxable deemed interest income from inter-company interest-free loans 6,925 7,288 6,406 Non-deductible loss and other expenses not deductible for tax purposes 12,422 4,469 30,016 Effect of income tax rate differences in jurisdictions other than the PRC (54 ) 709 10,660 Effect of tax holidays - 570 (53 ) Changes in valuation allowance (3,622 ) 2,132 (553 ) Income tax expenses $ 2,470 $ 4,479 $ 9,850 The Company did not identify significant unrecognized tax benefits for the years ended December 31, 2016, 2017 and 2018, respectively. The Company did not incur any interest and penalties related to potential underpaid income tax expenses. Since January 1, 2008, the relevant tax authorities have not conducted a tax examination on PRC entities. In accordance with relevant PRC tax administration laws, tax years from 2014 to 2018 of the Company's PRC subsidiaries and VIEs and VIEs' subsidiaries remain subject to tax audits as of December 31, 2018, at the tax authority's discretion.

ORDINARY SHARES

ORDINARY SHARES	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
ORDINARY SHARES	17. ORDINARY SHARES Under a series of share repurchase programs approved by the Company's board of directors on September 29, 2011, December 26, 2012, June 28, 2013 and June 28, 2014, during the years ended December 31, 2016, 2017 and 2018, the Company did not repurchase any ordinary shares.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	18. FAIR VALUE MEASUREMENTS Assets and liabilities disclosed at fair value The Company measures its amounts due from/to related parties, financing receivable, equity investments without readily determinable fair values and short-term and long-term debt, payable to investors and amount due from OPI at amortized cost. The carrying values of cash and cash equivalents and restricted cash approximated fair value and represented a level 1 measurement. The carrying value of financing receivable and payable to investors approximate their fair value due to their short-term nature and are considered level 3 measurement. Such fair value was estimated by discontinuing scheduled cash flows through the estimated maturity with estimated discount rate based on current offering rates of comparable financings with similar terms. The carrying value of the debt obligations approximate fair value considering the borrowing rates are at the same level of the current market yield for the comparable debts and represent a level 2 measurement. The carrying value of amount due from OPI approximates its fair value since the interest rates is considered to reflect market interest rate. The carrying value of current amounts due from /to other related parties’ approximate fair value due to their relatively short maturity. Assets and liabilities measured at fair value on a recurring basis The Company measures its financial assets and liabilities, including cash and cash equivalents, restricted cash, equity investments with readily determinable fair values, available for sales securities and contingent consideration at fair value on a recurring basis as of December 31, 2017 and 2018. Cash and cash equivalents and restricted cash are classified within Level 1 of the fair value hierarchy because they are valued based on the quoted market price in an active market. Equity investments with readily determinable fair values are classified within Level 1 of the fair value hierarchy as they are publicly listed equity securities. Contingent consideration is classified within Level 3 of the fair value hierarchy because the fair value is determined by using discounted cash flow methodology which includes a significant number of unobservable inputs which are further described below. The following table summarizes the Company's financial assets and liabilities measured and recorded at fair value on recurring basis as of and , respectively: As of December 31, 2018 As of December 31, 2017 Fair Value Measurement at the Reporting Date using Fair Value Measurement at the Reporting Date using Quoted price in active markets for identical assets Level 1 Significant other observable inputs Level 2 Significant unobservable in puts Level 3 Total Quoted price in active markets for identical assets Level 1 Significant other observable inputs Level 2 Significant unobservable in puts Level 3 Total Cash and cash equivalents $ 15,333 $ - $ - $ 15,333 $ 125,199 $ - $ - $ 125,199 Restricted cash 5,818 - - 5,818 47,253 - - 47,253 Non-current Restricted cash 36,362 - - 36,362 26,075 - - 26,075 Long-term investments Convertible debt - - 2,000 2,000 - - 2,000 2,000 Equity investment with readily determinable fair values - - - - - 9,794 - 9,794 Contingent consideration - - (105,670 ) (105,670 ) - - (66,794 ) (66,794 ) Total $ 57,513 $ - $ (103,670 ) $ (46,157 ) $ 198,527 $ 9,794 $ (64,794 ) $ 143,527 The key assumptions used in the valuation of the contingent consideration as of December 31, 2017 are summarized in the table below: For contingent consideration resulting from the acquisitions of the used car dealerships: Planed Offering date September 30, 2018 Discount rate (from acquisition date to Offering date) 15 % Discount rate (from Offering date to the last settlement date) 2.75 % Offering probability as of December 31, 2017 45 % The following is a reconciliation of the beginning and ending balances for contingent consideration measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the year ended December 31, 2017: Amounts Balance at beginning of the period $ 62,493 Fair value change 2,601 Exchange difference 1,700 Balance at December 31, 2017 $ 66,794 The key assumptions used in the valuations of the contingent consideration as of December 31, 2018 are summarized in the table below: (1) For contingent consideration resulting from the acquisition of the used car dealerships: Planed Offering date April 30, 2019 Discount rate (from acquisition date to Offering date) 15 % Discount rate (from Offering date to the last settlement date) 2.75 % Offering probability as of December 31, 2018 80 % (2) For contingent consideration resulting from acquisition of the after sales service centers: Planed Offering date April 30, 2019 Discount rate (from acquisition date to the last settlement date) 15 % Offering probability as of December 31, 2018 80 % The following is a reconciliation of the beginning and ending balances for contingent consideration measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the nine months ended December 31, 2018: Amounts Balance at beginning of the period $ 66,794 Contingent consideration resulting from new acquisitions 14,113 Fair value change 29,604 Exchange difference (4,841 ) Balance at December 31, 2018 $ 105,670 The Company did not transfer any assets or liabilities in or out of level 3 during the years ended December 31, 2017 and 2018. Assets measured at fair value on a nonrecurring basis The Company measured its property, equipment and goodwill at fair value on a nonrecurring basis whenever events or changes in circumstances indicate that the carrying value may no longer be recoverable. The Company measures the purchase price allocation at fair value on a nonrecurring basis as of the acquisition dates. The Company performed a goodwill impairment analysis as of December 31, 2018. Refer to the Note 12.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
SHARE-BASED COMPENSATION	19. SHARE-BASED COMPENSATION Renren Stock options Renren Inc. (“Renren”) adopted the 2006 Equity Incentive Plan (the “2006 Plan”), the 2008 Equity Incentive Plan (the “2008 Plan”), the 2009 Equity Incentive Plan (the “2009 Plan”), the 2011 Share Incentive Plan (the “2011 Plan”), the 2016 Share Incentive Plan (the “2016 Plan”), and the 2018 Share Incentive Plan (the “2018 Plan”) for purpose of granting of stock options and incentive stock options to employees and executives to reward them for service to the parent and to provide incentives for future service. In 2006, Renren Inc. adopted the 2006 Plan to replace the equity incentive plans adopted during the years ended December 31, 2003, 2004 and 2005. On February 26, 2016, Renren Inc. amended the 2011 Plan and 45,000,000 97,430,220, 30,529,630, 40,000,000, 110,014,158, 53,596,236 and 107,100,000, respectively. 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. The awards under the above plans are subject to vesting schedules ranging from immediately upon grant to six years subsequent to grant date. On August 24, 2017, the Company’s compensation committee approved to reduce the exercise price for all outstanding options previously granted by the Company with an exercise price higher than $0.478 per ordinary share to $0.478 per share. Such reduction was accounted by the Company as a share option modification and required the remeasurement of these share options at the time of the modification. The total incremental cost as a result of the modification was $10,382. The incremental cost related to vested options amounted to $7,427 and was recorded in the consolidated statements of operations during the year ended December 31, 2017. The incremental cost related to unvested options amounted to $2,955 and will be recorded over the remaining service periods. On June 29, 2018, Renren Inc.’s compensation committee approved to reduce the exercise price for all outstanding options previously granted by Renren with an exercise price higher than $0.0613 per ordinary share to $0.0613 per share. Such reduction was accounted by Renren as a share option modification and required the remeasurement of these share options at the time of the modification. The total incremental cost as a result of the modification was $10,779. The incremental cost related to vested options amounted to $9,304 and was recorded in the consolidated statements of operations during year ended December 31, 2018. The incremental cost related to unvested options amounted to $1,475 and will be recorded over the remaining service periods. Excluding the options containing market and service vesting conditions, the Company calculated the estimated fair value of the options on the respective grant dates using the binomial option pricing model with the assistance from independent valuation firms, with the following assumptions used in 2016. The Company did not grant any options in 2017 and 2018. The weighted-average grant-date fair value of the share options granted during 2016 was $0.54. Year ended December 31, 2016 Using binomial model Risk-free interest rate 2.0 % Volatility 50 % Expected term (in years) 10 Exercise price $ 1.227 Dividend yield - (1) Volatility The volatility of the underlying ordinary shares during the life of the options was estimated based on the historical stock price volatility of listed comparable companies over a period comparable to the expected term of the options. (2) Risk-free interest rate Risk-free interest rate was estimated based on the yield to maturity of treasury bonds of the United States with a maturity period close to the expected life of the options. (3) Expected term For the options granted to employees, the Company estimated the expected term based on the vesting and contractual terms and employee demographics. For the options granted to non-employees, the Company estimated the expected term as the original contractual term. (4) Dividend yield The dividend yield was estimated by the Company 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 Company's board of directors. (6) Fair value of underlying ordinary shares The closing market price of the Company's ordinary shares on the grant date was used. The aggregate intrinsic value was calculated as the difference between the exercise price of the underlying awards and the closing stock price of $0.53, $ 0.69 The following table summarizes information with respect to share options outstanding as of December 31, 2018: Options outstanding Options exercisable Range of exercise prices Number outstanding Weighted average remaining contractual life Weighted average exercise price Weighted average intrinsic value Number of exercisable Weighted average remaining contractual life Weighted average exercise price Weighted average intrinsic value $ 0.01 0.18 139,094,101 5.40 $ 0.06 $ 5,754 117,561,450 5.11 $ 0.06 $ 4,863 139,094,101 $ 5,754 117,561,450 $ 4,863 Weighted Weighted average average Number of exercise grant date shares price fair value Balance, December 31, 2017 141,481,616 $ 0.48 $ 0.64 Exercised (2,268,420 ) $ 0.06 $ 0.66 Forfeited (119,095 ) $ 0.16 $ 0.15 Balance, December 31, 2018 139,094,101 $ 0.06 $ 0.64 Exercisable, December 31, 2018 117,561,450 $ 0.06 Expected to vest, December 31, 2018 21,532,651 $ 0.06 For employee stock options, the Company recorded share-based compensation from continuing operations of $19,420, $23,904, and $18,640 For non-employee options, share based compensation was immaterial for the years ended December 31, 2016, December 31, 2017 and December 31, 2018. As of December 31, 2018, there was $14,285 unrecognized share-based compensation expense relating to share options. This amount is expected to be recognized over a weighted-average vesting period of 1.70 years. Renren Nonvested restricted shares A summary of the nonvested restricted shares activity is as follows: Weighted Weighted average fair number of value nonvested per ordinary restricted share at the shares grant dates Outstanding as of December 31, 2017 10,802,683 $ 0.95 Granted 88,935,342 $ 0.14 Vested (8,404,575 ) $ 0.47 Forfeited (17,561,071 ) $ 0.18 Outstanding as of December 31, 2018 73,772,379 $ 0.21 The Company recorded compensation expenses based on the fair value of nonvested restricted shares on the grant dates over the requisite service period of award using the straight line vesting attribution method. The fair value of the nonvested restricted shares on the grant date was the closing market price of the ordinary shares as of the date. The Company recorded compensation expenses related to nonvested restricted shares from continuing operations of $4,124, $4,112 and $3,917. The Company did not have any compensation expenses related to nonvested shares in discontinued operations. Total unrecognized compensation expense amounting to $15,345 related to nonvested restricted shares granted as of December 31, 2018. The expense is expected to be recognized over a weighted-average period of 3.38 years. Kaixin Auto Group Incentive Plan On January 31, 2018, Kaixin Auto adopted a stock incentive plan, whereby 40,000,000 ordinary shares of Kaixin Auto Group (“Kaixin”) are made available for future grant for employees or consultants of Kaixin either in the form of incentive share options or restricted shares. The plan was amended and restated in May 2018 that up to 140,000,000 ordinary shares will be made available for granting as awards. On March 15, 2018 and July 1, 2018, Kaixin issued an aggregate of 36,461,500 options to purchase Kaixin’s ordinary shares to certain of its directors, officers and employees to compensate their services. 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. The awards under the above plans are subject to vesting schedules ranging from immediately upon grant to four years subsequent to grant date. The weighted-average grant-date fair value of the share options granted during the period presented was $0.52. In determining the fair value of share options granted, a binomial option pricing model was applied. Year ended December 31, 2018 Risk-free interest rate (1) 2.82 % Volatility (2) 28 55 % Expected term (in years) (3) 10 Exercise price (4) $ 0.3 Dividend yield (5) — Fair value of underlying ordinary share (6) $ 0.75 (1) Risk-free interest rate Risk-free interest rate was estimated based on the yield to maturity of treasury bonds of the United States with a maturity period close to the expected life of the options. (2) Volatility The volatility of the underlying ordinary shares during the life of the options was estimated based on the historical stock price volatility of listed comparable companies over a period comparable to the expected term of the options. (3) Expected term For the options granted to employees, the Company estimated the expected term based on the vesting and contractual terms and employee demographics. For the options granted to non-employees, the Company estimated the expected term as the original contractual term. (4) Exercise price The exercise price of the options was determined by the Company’s board of directors. (5) Dividend yield The dividend yield was estimated by the Company based on its expected dividend policy over the expected term of the options. (6) Fair value of underlying ordinary shares The estimated fair value of the ordinary shares underlying the options as of the valuation date was determined based on a contemporaneous valuation. When estimating the fair value of the ordinary shares on the valuation dates, management has considered a number of factors, including the result of a third party appraisal of the Company, while taking into account standard valuation methods and the achievement of certain events. The fair value of the ordinary shares in connection with the option grants on the valuation date was determined with the assistance of an independent third party appraiser. The following table summarizes information with respect to share options outstanding as of December 31, 2018: Options outstanding Options exercisable The exercise prices Number outstanding Weighted average remaining contractual life Weighted average exercise price Number of exercisable Weighted average remaining contractual life Weighted average exercise price $ 0.3 35,281,500 9.19 $ 0.30 13,333,151 9.19 $ 0.30 35,281,500 13,333,151 Number of shares Weighted average exercise price Weighted average grant date fair value Balance, December 31, 2017 — $ — $ — Granted 36,461,500 $ 0.30 $ 0.52 Exercised — $ — $ — Forfeited (1,180,000 ) $ 0.30 $ 0.52 Balance, December 31, 2018 35,281,500 $ 0.30 $ 0.52 Exercisable, December 31, 2018 13,333,151 $ 0.30 $ 0.52 Expected to vest, December 31, 2018 21,948,349 $ 0.30 $ 0.52 For employee stock options, the Company recorded share-based compensation amounting to $9,046 for the year ended December 31, 2018, based on the fair value on the grant date over the requisite service period of award using the straight-line method. As of December 31, 2018, there was $9,259 unrecognized share-based compensation expense relating to share options. This amount is expected to be recognized over a weighted-average vesting period of 3.22 years. The amount of share-based compensation expense for options and nonvested restricted shares attributable to selling and marketing, research and development, general and administrative expenses and loss from the operations of the discontinued operations are as follows: Years ended December 31, 2016 2017 2018 Gross amount: Selling and marketing $ 770 $ 598 $ 1,927 Research and development 1,363 1,092 1,142 General and administrative 21,411 26,326 28,534 Total share-based compensation expense $ 23,544 $ 28,016 $ 31,603 There was no income tax benefit recognized in the statements of operations for share-based compensation for the years ended December 31, 2016, 2017 and 2018. On April 30, 2019, all the options granted under the Kaixin Auto Group 2018 Plan were cancelled and replaced with awards of KAH following the consummation of the Business Combination. In May 2019, KAH granted 2,206,888 shares of stock option and 2,407,733 restricted shares to its employees, directors and officers, and advisors, under its 2019 Employee Incentive Plan. The Company is in the process of assessing the accounting impact of the transactions.

RELATED PARTY BALANCES AND TRAN

RELATED PARTY BALANCES AND TRANSACTIONS	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
RELATED PARTY BALANCES AND TRANSACTIONS	20. RELATED PARTY BALANCES AND TRANSACTIONS Details of major related party balances as of December 31, 2017 and 2018 are as follows: (1) Amounts due from related parties As of December 31, 2017 and 2018, amounts due from related parties As of December 31, Note 2017 2018 Oak Pacific Investment (i) $ - $ 93,880 Beijing Infinities (ii) - 60,000 Others 188 829 (i) The balance represents the US$ 90 3.88 8 8.5 (ii) The balance represents the US$ 60 20 40 (2) Amounts due to related parties As of December 31, 2017 2018 Minority shareholders $ 6,859 $ - Others 200 55 Total $ 7,059 $ 55 Details of major related party transactions for the years ended December 31, 2016, 2017 and 2018 are as follows: (3) Major transaction with related parties for amount due from related parties Years ended December 31, 2016 2017 2018 Equity investments without readily determinable fair values $ - $ 8,591 $ - Oak Pacific Investment - - 93,880 Beijing Infinities - - 60,000 Total $ - $ 8,591 $ 153,880 (4) Transactions with related parties for amount due to related parties Years ended December 31, 2016 2017 2018 Oak Pacific Investment and its subsidiaries $ 10,692 $ - $ 1,834 Others 413 333 5,418 Total $ 11,105 $ 333 $ 7,252 (5) In July 2012, the Company purchased $10,000 Series 2012-A Senior Secured Sofi Loan Notes issued by SoFi Lending Corp., a subsidiary of SoFi. is a shareholder of SoFi and the Company's chairman and CEO, Joe Chen, is a director of SoFi. In September 2012, March 2014, January and February 2015, and October 2015, the Company invested $49,000, $20,789, $22,331 and $150,000 in newly issued Series B preferred shares, Series D preferred shares, Series E preferred shares and Series F preferred shares of SoFi, respectively, concurrently with a group of other investors. These transactions were approved by the independent, disinterested members of the Company's board and the audit committee of the board. In April 2017, the Company disposed 5,719,986 preferred shares of SoFi for total net proceeds of $91,926, recording a realized gain amounting to $58,335. (6) In 2006, the Company entered into an agreement to make a loan of $ 167 10 In 2016, the Company received $7,188 from Liu Guolan for the repayment of the loan, which is all the proceeds directly or indirectly received by Liu Guolan through holding the investment in Hulian Shidai. $7,021 of the repayment was recorded as other income in the year ended December 31, 2016 as the Company has no further obligations to the relevant payment received.

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
SEGMENT INFORMATION	21. SEGMENT INFORMATION The Company's Chief Operating Decision Maker (the "CODM") is the CEO, who is responsible for decisions about allocating resources and assessing performance of the Company. An operating segment is a component of the Company that engages in business activities from which it may earn revenues and incur expenses, and is identified on the basis of the internal financial reports that are provided to and regularly reviewed by the Company’s CODM. During the years ended December 31, 2016, 2017 and 2018, the Company identified two reportable segments, namely Renren and Auto Group. The Auto Group segment mostly includes the sales of automobile as well as used car financing provided to used car dealerships while the Renren segment mostly includes the Company's SaaS business. The Company's SNS business, OPI and Online Gaming have been reclassified as discontinued operations. Year ended December 31, 2016 Year ended December 31, 2017 Year ended December 31, 2018 Renren Auto Group Total Renren Auto Group Total Renren Auto Group Total Net revenues $ 18,097 29,384 47,481 21,931 152,693 174,624 19,122 479,076 498,198 Cost of revenues (14,698 ) (25,879 ) (40,577 ) (17,920 ) (145,394 ) (163,314 ) (11,966 ) (464,502 ) (476,468 ) Operating expenses (35,344 ) (25,536 ) (60,880 ) (58,543 ) (30,456 ) (88,999 ) (66,847 ) (68,285 ) (135,132 ) Operating loss (31,945 ) (22,031 ) (53,976 ) (54,532 ) (23,157 ) (77,689 ) (59,691 ) (53,711 ) (113,402 ) Net (loss) income from continuing operations (39,060 ) (24,054 ) (63,114 ) 37,444 (28,695 ) 8,749 (69,285 ) (89,532 ) (158,817 ) Net (loss) income from discontinued operations (122,238 ) - (122,238 ) (119,252 ) - (119,252 ) 223,298 - 223,298 Net (loss) income (161,298 ) (24,054 ) (185,352 ) (81,808 ) (28,695 ) (110,503 ) 154,013 (89,532 ) 64,481 The Company does not allocate assets to its current operating segments as management does not believe that allocating these assets is useful in evaluating these segments’ performance. Accordingly, the Company has not made disclosure of total assets by reportable segment. The majority of the Company's revenue for the years ended December 31, 2016, 2017 and 2018 was generated from the PRC. As of December 31, 2016, 2017 and 2018, respectively, substantially all of long-lived assets of the Company were located in the PRC.

NET (LOSS) INCOME PER SHARE

NET (LOSS) INCOME PER SHARE	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	22. N ET (LOSS The following table sets forth the computation of basic and diluted net (loss) income per ordinary share for the years ended: Years ended December 31, 2016 2017 2018 Net loss: (Loss) income from continuing operations $ (63,114 ) $ 8,749 $ (158,817 ) (Loss) income from discontinued operations, net of tax (122,238 ) (119,252 ) 223,298 Net (loss) income (185,352 ) (110, 503) 64,481 Add: net loss attributable to noncontrolling interest - 76 8,059 Net (loss) income attributable to Renren Inc. $ (185,352 ) $ (110,427 ) $ 72,540 Weighted average number of ordinary shares outstanding used in computing net loss per ordinary share-basic 1,022,664,396 1,028,537,406 1,036,421,063 Incremental weighted average ordinary shares from assumed exercise of stock options using the treasury stock method 4,512,567 1,199,533 59,384,854 Weighted average number of ordinary shares outstanding used in computing net income per ordinary share-diluted 1,027,176,963 1,029,736,939 1,095,805,917 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic: (Loss) income per ordinary share from continuing operations $ (0.06 ) $ 0.01 $ (0.15 ) (Loss) income per ordinary share from discontinued operations $ (0.12 ) $ (0.12 ) $ 0.22 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic: $ (0.18 ) $ (0.11 ) $ 0.07 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted: (Loss) income per ordinary share from continuing operations $ (0.06 ) $ 0.01 $ (0.15 ) (Loss) income per ordinary share from discontinued operations $ (0.12 ) $ (0.12 ) $ 0.20 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted: $ (0.18 ) $ (0.11 ) $ 0.07 For the years ended December 31, 2017 and 2018, 142,615,572 and 39,752,430 stock options and 9,668,727 and 6,286,947 nonvested shares were excluded from the calculation of diluted weighted average number of common shares, respectively, as their effect was anti-dilutive.

COMMITMENTS

COMMITMENTS	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCY	23. COMMITMENTS (1) Operating lease as lessee The Company leases its facilities and offices under non-cancelable operating lease agreements. In addition, the Company pays telecommunications carriers and other service providers for telecommunications services and for hosting its servers at their internet data centers under non-cancelable agreements, which are treated as operating leases. These leases expire through 2027 and are renewable upon negotiation. Rental and bandwidth expenses under operating leases for 2016, 2017 and 2018 from continuing operations were $5,814, $5,793, and 8,269 respectively and from discontinued operations were $333, $ 133, and $48, respectively. Future minimum lease payments under such non-cancellable leases as of December 31, 2018 are as follows: 2019 $ 5,735 2020 4,860 2021 1,840 2022 943 2023 332 2024 and thereafter 987 Total $ 14,697 (2) Future minimum principal payments related to the Company’s long-term debts as of December 31, 2018 are as follows: 2019 - 2020 35,000 Total $ 35,000 (3) Unconditional investment commitment The Company was obligated to pay up to $1,736 and $nil for the acquisition of investments under various arrangements as of December 31, 2017 and 2018, respectively. Contingencies In August 2018, the Kaixin's Ji'nan Dealership received a notice from the local police regarding an investigation of the dealership’s premises. The Company believes the investigation is an isolated individual activity of the minority shareholder who holds 30% of the Ji’nan Dealership’s equity interest. Certain assets of the Ji’nan Dealership are not assessable pursuant to the investigation. In connection with these events, the Company determined that it is probable that it cannot enforce the realization of the inventory value and that suppliers to the Ji’nan Dealership are unable to fulfil the contract obligation by either delivering vehicles or returning money to the Company due to the ongoing investigation. As a result, the Company wrote off all inventory and advances to suppliers of the Ji’nan Dealership, which totalled US$5.7 million and US$16.1 million respectively during the year ended December 31, 2018. In addition, in November 2018, Kaixin agreed to transfer its equity interest in the Ji’nan Dealership and the related assets to an affiliate of the Company. Following the transfer, the Company closed the dealership. As a result of the above, the Company subsequently fully impaired the goodwill related to the Ji'nan Dealership. Refer to note 4. The Company does not believe that the above will have any other effect on its business or financial conditions. Additionally, from time to time, the Company is subject to legal proceedings in the ordinary course of business. The Company does not believe that any currently pending legal or administrative proceeding to which the Company is a party will have a material effect on its business or financial condition.

EMPLOYEE BENEFIT PLAN

EMPLOYEE BENEFIT PLAN	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLAN	24. EMPLOYEE BENEFIT PLAN Full time employees of the Company 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 Company accrues for these benefits based on certain percentages of the employees' salaries. The total provisions for such employee benefits from continuing operations were $6,051, $7,130 and $8,640 and from discontinued operations were $503, $399 and $178 for the years ended December 31, 2016, 2017 and 2018, respectively.

OTHER COMPREHENSIVE INCOME (LOS

OTHER COMPREHENSIVE INCOME (LOSS)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
OTHER COMPREHENSIVE INCOME (LOSS)	25. OTHER COMPREHENSIVE INCOME (LOSS) Movement of accumulated other comprehensive income (loss) is as follow: Foreign Unrealized currency gain (loss) on translation available-for-sale adjustments investments Total Balance as of December 31, 2015 $ 1,490 $ 35,634 $ 37,124 Exchange difference (10,994 ) (19,247 ) (30,241 ) Balance as of December 31, 2016 $ (9,504 ) $ 16,387 $ 6,883 Exchange difference 9,585 648 10,233 Balance as of December 31, 2017 $ 81 $ 17,035 $ 17,116 Exchange difference (5,770 ) (17,035 ) (22,805 ) Balance as of December 31, 2018 $ (5,689 ) $ - $ (5,689 ) The change in the balance from December 31, 2017 includes $7,364 one-off cumulative-effect adjustment related to the adoption of ASU 2016-01 (See Note 2).

STATUTORY RESERVE AND RESTRICTE

STATUTORY RESERVE AND RESTRICTED NET ASSETS	12 Months Ended
	Dec. 31, 2018
STATUTORY RESERVE AND RESTRICTED NET ASSETS [Abstract]
STATUTORY RESERVE AND RESTRICTED NET ASSETS	26. STATUTORY RESERVE AND RESTRICTED NET ASSETS In accordance with the Regulations on Enterprises with Foreign Investment of China and their articles of association, the Company’s subsidiaries and VIE entities 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 the Company's subsidiaries, the Company's affiliated PRC entities and their respective subsidiaries. The Company's subsidiaries and VIE entities 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. As of December 31, 2018, none of the Company's PRC subsidiaries and VIE entities had a general reserve that reached the 50% of their registered capital threshold, therefore they will continue to allocate at least 10% of their after-tax profits to the general reserve fund. 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 Company's subsidiaries. The appropriation to these reserves by the Company's PRC subsidiaries was $nil, $nil and $nil for the years ended December 31, 2016, 2017 and 2018, respectively. As a result of these PRC laws and regulations and the requirement that distributions by PRC entities can only be paid out of distributable profits computed in accordance with PRC GAAP, the PRC entities are restricted from transferring a portion of their net assets to the Company. Amounts restricted include paid-in capital and the statutory reserves of the Company's PRC subsidiaries and VIE entities. The aggregate amounts of capital and statutory reserves restricted which represented the amount of net assets of the relevant subsidiaries and VIE entities in the Company not available for distribution was $435,999 and $352,535 as of December 31, 2017 and 2018, respectively.

Additional Information - Financ

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Schedule I Condensed Financial Information of Parent Company	Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company BALANCE SHEETS (U.S. dollars in thousands, except share data and per share data, or otherwise noted) As of December 31, 2017 2018 ASSETS Current assets: Cash and cash equivalents $ 97,697 $ 749 Prepaid expenses and other current assets 5,179 908 Amounts due from subsidiaries 1,144,420 493,231 Amounts due from related parties - 93,880 Total current assets 1,247,296 588,768 Long-term investments 209,605 417 TOTAL ASSETS $ 1,456,901 $ 589,185 LIABILITIES AND EQUITY Current liabilities: Long-term debt - current 52,604 - Accrued expenses and other current liabilities 15,508 3,583 Amounts due to related party - 27 Total current liabilities 68,112 3,610 Long-term liabilities 20,000 35,000 Other non-current liabilities 6,356 - Deficit of investment in subsidiaries 687,629 403,110 TOTAL LIABILITIES $ 782,097 $ 441,720 Equity: Class A ordinary shares, $0.001 par value, 3,000,000,000 shares authorized, 726,549,453 and 737,222,448 shares issued and outstanding as of December 31, 2017 and 2018, respectively 727 737 Class B ordinary shares, $0.001 par value, 500,000,000 shares authorized, 305,388,450 and 305,388,450 shares issued and outstanding as of December 31, 2017 and 2018, respectively 305 305 Additional paid-in capital 1,303,117 709,137 Accumulated deficit (646,461 ) (557,025 ) Accumulated other comprehensive income 17,116 (5,689 ) Equity 674,804 147,465 TOTAL LIABILITIES AND EQUITY $ 1,456,901 $ 589,185 Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME (U.S. dollars in thousands, except share data and per share data, or otherwise noted) Years ended December 31, 2016 2017 2018 Selling and marketing $ 770 $ 598 $ 423 Research and development 1,363 1,092 1,035 General and administrative 25,477 33,519 25,536 Total operating expenses 27,610 35,209 26,994 Other income 307 1,385 924 Interest income 127 223 3,969 Interest expenses (5,728 ) (6,391 ) (3,989 ) (Loss) earnings in equity method investments (3,968 ) 9,743 (1,415 ) Gain on disposal of equity method investments - 58,335 - Gain on disposal of equity investments without readily determinable fair values - 37,311 - Gain on deconsolidation of the subsidiaries - - 182,441 Equity in loss of subsidiaries and variable interest entities (148,480 ) (175,824 ) (82,396 ) Net loss $ (185,352 ) $ (110,427 ) $ 72,540 Other comprehensive (loss) income, net of tax: Foreign currency translation (10,994 ) 9,585 (5,770 ) Net unrealized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively (18,518 ) 3,891 (9,671 ) Non-controlling interest disposition - - 2,519 Transfer to statements of operations of realized gain on available-for-sale securities, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively (729 ) (3,243 ) (7,364 ) Other comprehensive (loss) income $ (30,241 ) $ 10,233 $ (20,286 ) Comprehensive (loss) income $ (215,593 ) $ (100,194 ) $ 52,254 Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company STATEMENTS OF CASH FLOWS (U.S. dollars in thousands, except share data and per share data, or otherwise noted) Years ended December 31, 2016 2017 2018 Cash flows from operating activities: Net (loss) income $ (185,352 ) $ (110,427 ) $ 72,540 Equity in income of subsidiaries and variable interest entities 148,480 175,824 82,396 Share-based compensation expense 23,544 28,016 22,557 Gain on deconsolidation of subsidiaries - - (182,441 ) Gain on disposal of equity investments without readily determinable fair values - (37,311 ) - Exchange loss (gain) on offshore accounts 3 (1 ) 1 Loss (earnings) in equity method investment 3,968 (68,078 ) 1,415 Fair value change of liability-classified warrant (105 ) (195 ) - Changes in operating assets and liabilities: Prepaid expenses and other current assets 107 (294 ) (646 ) Accrued expenses and other current liabilities (1,689 ) 1,902 (11,925 ) Other non-current liabilities 5,332 5,862 (58,960 ) Increase in amounts due from subsidiaries (65,055 ) (27,710 ) 91,089 Net cash (used in) provided by operating activities (70,767 ) (32,412 ) 16,026 Cash flows from investing activities: Restricted cash 15,370 - - Proceeds from principal return on SoFi Loan Note 5,879 - - Proceeds from sale of equity method investment 18,460 91,926 - Proceeds from sale of equity investments without readily determinable fair values - 32,726 4,585 Purchase of equity method investment (1,000 ) (500 ) - Cash disposed of from deconsolidation of subsidiaries - - - Net cash provided by investing activities 38,709 124,152 4,585 Cash flows from financing activities: Proceeds from exercise of share options 1,430 262 1,107 Proceeds from borrowings 130,000 - 27,000 Cash distribution to shareholders related to acquisition of OPI - - (133,665 ) Repayment of borrowings (100,000 ) (10,000 ) (12,000 ) Proceeds from loan from a related party 10,692 - - Net cash provided by (used in) financing activities 42,122 (9,738 ) (117,558 ) Net increase (decrease) in cash and cash equivalents 10,064 82,002 (96,947 ) Cash and cash equivalents at beginning of year 5,633 15,694 97,697 Effect of exchange rate changes (3 ) 1 (1 ) Cash and cash equivalents at end of year $ 15,694 $ 97,697 $ 749 1. BASIS FOR PREPARATION The condensed financial information of the Parent Company has been prepared using the same accounting policies as set out in the Company’s consolidated financial statements except that the Parent Company used the equity method to account for investments in its subsidiaries and VIE. The condensed financial information is provided since the restricted net assets of the Company’s subsidiaries, VIEs and VIEs' subsidiaries were $352,535 over 25% of the consolidated net assets of the Company as of December 31, 2018. 2. INVESTMENTS IN SUBSIDIARIES, VIE AND VIE’S SUBSIDIARIES The Parent Company and its subsidiaries, VIEs and VIEs' subsidiaries were included in the consolidated financial statements where inter-company balances and transactions were eliminated upon consolidation. For purpose of the Parent Company’s stand-alone financial statements, its investments in subsidiaries, VIEs and VIEs' subsidiaries were reported using the equity method of accounting. The Parent Company’s share of loss from its subsidiaries, VIEs and VIEs' subsidiaries were reported as share of loss of subsidiaries, VIEs and VIEs' subsidiaries in the accompanying Parent Company financial statements. Ordinarily under the equity method, an investor in an equity method investee would cease to recognize its share of the losses of an investee once the carrying value of the investment has been reduced to $nil absent an undertaking by the investor to provide continuing support and fund losses. For the purpose of this Schedule I, the Parent Company has continued to reflect its share, based on its proportionate interest, of the losses of subsidiaries, VIEs and VIEs' subsidiaries regardless of the carrying value of the investment even though the Parent Company is not obligated to provide continuing support or fund losses.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of presentation	Basis of presentation The consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America ("US GAAP").
Liquidity	Liquidity The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The realization of assets and the satisfaction of liabilities in the normal course of business are dependent on, among other things, the Company’s ability to generate cash flows from operations, and the Company’s ability to arrange adequate financing arrangements. As of December 31, 2018, the Company had $29,248, $147,465, including an accumulated deficit of $563,737. For the year ended December 31, 2018, the Company incurred losses from continuing operations amounting to $158,817 and generated negative cash flows from operating activities amounting to $ 60,239. ● In January 2019, Kunlun Tech Limited ("Kunlun"), KAH and Kaixin entered into a convertible loan agreement pursuant to which Kunlun has agreed to invest US$23 million into Kaixin. US$20 million of the loan was advanced to Kaixin on January 28, 2019, and the remaining US$3 million is to be paid by January 31, 2020. ● In January 2019, KAH entered into a subscription agreement with a third-party investor to sell 750,000 of its units (each unit having the same underlying securities as were issued in KAH’s initial public offering) at a price of US$10.00 per unit. The private placement of US$7.5 million was received by KAH on May 2, 2019, which will further provide liquidity for Kaixin's future operations. ● In January 2019, the Company received US$ 3 million for the disposal of Renren SNS Business as set out in Note 4. On May 6, 2019, the Company obtained a signed commitment letter from Beijing Infinities Interactive Media Co., Ltd ("Beijing Infinities") which stated that the remaining cash consideration of US$17 million is expected to be received before June 30, 2019. ● In April 2019, 58.com Holdings Inc. ("58.com"), KAH and Kaixin entered into a convertible loan agreement pursuant to which 58.com has agreed to invest US$1 million into Kaixin. The proceeds from the loan were received on April 30, 2019. ● In April 2019, the Company entered into a long-term borrowing agreement with East West Bank for a total credit up to US$7.3 million. The loan bears an annual interest rate of 5.22%, and has a loan period of 18 months. On April 12, 2019, US$5.8 million had been extended to the Company by East West Bank, and the Company will be able to further utilize the remaining credit of U$1.5 million as needed during the loan period. As a result of the above activities and plans, the Company believes that it will have adequate sources of liquidity and capital resources to support its daily operations for the next 12 months after the issuance of the consolidated financial statements.
Principles of consolidation	Principles of consolidation The consolidated financial statements of the Company include the financial statements of Renren Inc., its subsidiaries, its VIEs and VIEs' subsidiaries. All inter-companies transactions and balances are eliminated upon consolidation.
Business Combinations	Business combinations Business combinations are recorded using the acquisition method of accounting. The Company uses a screen test to evaluate whether a transaction should be accounted for as an acquisition and/or disposal of a business versus assets. In order for a purchase to be considered an acquisition of a business, the set of transferred assets and activities must include, at a minimum, an input and a substantive process that together significantly contribute to the ability to create outputs. If substantially all of the fair value of the gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets, then the set of transferred assets and activities is not a business. The purchase price of business acquisition is allocated to the tangible assets, liabilities, identifiable intangible assets acquired and non-controlling interest, if any, based on their estimated fair values as of the acquisition date. The excess of the purchase price over those fair values is recorded as goodwill. Acquisition-related expenses and restructuring costs are expensed as incurred. Where the consideration in an acquisition includes contingent consideration and the payment of which depends on the achievement of certain specified conditions post-acquisition, the contingent consideration is recognized and measured at its fair value at the acquisition date and if recorded as a liability, it is subsequently carried at fair value with changes in fair value reflected in earnings.
Use of estimates	Use of estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the reported amounts of revenues and expenses in the financial statements and accompanying notes. Significant accounting estimates reflected in the Company's consolidated financial statements include, but are not limited to, revenue recognition, allowance for financing receivable, allowance for doubtful accounts, share-based compensation, deferred tax valuation allowance, income taxes, value-added tax, impairment of goodwill and indefinite-lived intangible assets, long-term available-for-sale investments, and equity investment without readily determinable fair values, impairment of long-term investments, the price purchase allocation and the fair value of contingent consideration for business acquisition.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents consist of cash on hand.
Restricted cash	Restricted cash Restricted cash primarily consists of cash deposits used to secure debt borrowings of the Company which is expected to be released in accordance with the debt agreement. The restriction will lapse when the related debt agreement is paid off. The current portion of restricted cash represents cash deposited into bank accounts which is expected to be released within the next twelve months. The non-current portion of restricted cash represents cash deposited into bank accounts which is not expected to be released within the next twelve months. Non-current restricted cash amounted to $ 26,075 and $36,362
Fair value	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 Company 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, which prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The level in the hierarchy within which the fair value measurement in its entirety falls is based upon the lowest level of input that is significant to the fair value measurement as follows:  Level 1-inputs are based upon unadjusted quoted prices for identical assets or liabilities traded in active markets.  Level 2-inputs are based upon quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets and liabilities in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities.  Level 3-inputs are generally unobservable and typically reflect management's estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques that include option pricing models, discounted cash flow models, and similar techniques.
Investments	Long-term Investments Equity method investments Equity investment in common stock or in-substance common stock of an entity where the Company can exercise significant influence, but not control, is accounted for using the equity method. Significant influence is generally considered to exist when the Company has an ownership interest in the voting stock of the investee between 20% and 50%. Other factors, such as representation on 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. An investment in in-substance common stock is an investment in an entity that has risk and reward characteristics that are substantially similar to that entity’s common stock. The Company considers subordination, risks and rewards of ownership and obligation to transfer value when determining whether an investment in an entity is substantially similar to an investment in that entity’s common stock. Under the equity method, the investment is initially recorded at cost and adjusted for the Company's share of undistributed earnings or losses of the investee. Investment losses are recognized until the investment is fully written down as the Company does not guarantee the investee's obligations nor it is committed to provide additional funding. When the Company's carrying value in an equity method affiliated company is reduced to zero, no further losses are recorded in the Company's consolidated financial statements unless the Company guaranteed obligations of the affiliated company or has committed additional funding. When the affiliated company subsequently reports income, the Company will not record its share of such income until it exceeds the amount of its share of losses not previously recognized. The Company’s management regularly evaluates the impairment of the equity investment based on performance and the financial position of the investee as well as other evidence of market value. Such evaluation includes, but is not limited to, reviewing the investee's cash position, recent financings, projected and historical financial performance, cash flow forecasts and financing needs. An impairment charge is recorded when the carrying amount of the investment exceeds its fair value and this condition is determined to be Equity Investments without Readily Determinable Fair Values Historically, for investee companies over which the Company did not have significant influence and a controlling interest, the Company accounted for these as cost method investments under ASC 325-20. In January, 2018, the Company adopted Accounting Standards Update (‘‘ASU’’) 2016-01, Financial Instruments—Recognition and Measurement of Financial Assets and Financial Liabilities, and accounts for equity investments that do not have a readily determinable fair value using the measurement alternative prescribed within ASU 2016-01, to the extent such investments are not subject to consolidation or the equity method. Under the measurement alternative, these financial instruments are carried at cost, less any impairment (assessed quarterly), plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. In addition, income is recognized when dividends are received only to the extent they are distributed from net accumulated earnings of the investee. Otherwise, such distributions are considered returns of investment and are recorded as a reduction of the cost of the investment. The Company did not record impairment losses on equity securities without readily determinable fair values during the years ended December 31, 2016, 2017 and 2018. Equity Investments with Readily Determinable Fair Values The Company adopted ASU No. 2016-01 on January 1, 2018. As a result, all equity investments with readily determinable fair values (other than those accounted for using the equity method of accounting) are measured at fair value with changes in fair value recorded in the consolidated statements of operations. Those investments were previously accounted as available-for-sale investments with changes in fair value recorded in other comprehensive income (loss). Available-for-sale investment For investments which are determined to be debt securities, the Company 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 investment is carried at its fair value and the unrealized gains or losses from the changes in fair values are included in accumulated other comprehensive (loss) income. The Company reviews its available for sale investments for other than temporary impairment based on the specific identification method. The Company considers available quantitative and qualitative evidence in evaluating potential impairment of its investments. If the cost of an investment exceeds the investment’s fair value, the Company considers, among other factors, general market conditions, government economic plans, the duration and the extent to which the fair value of the investment is less than the cost, the Company’s intent and ability to hold the investment, and the financial condition and near term prospects of the investees. If there is OTTI on debt securities, the Company separates the amount of the OTTI into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings, which represents the difference between a security’s amortized cost basis and the discounted present value of expected future cash flows. The amount due to other factors is recognized in other comprehensive (loss) income if the entity neither intends to sell and will not more likely than not be required to sell the security before recovery. The difference between the amortized cost basis and the cash flows expected to be collected is accreted as interest income. The Company did not record impairment losses on its available-for-sale investment during the years ended, 2016, 2017 and 2018.
Accounts receivable and allowance for doubtful accounts	Accounts receivable and allowance for doubtful accounts Accounts receivable represents those receivables derived in the ordinary course of business from continuing operations which mainly consists of IVAS. An allowance for doubtful accounts is provided based on aging analyses of accounts receivable balances, historical bad debt rates, repayment patterns and customer credit worthiness.
Financing receivable	Financing receivable Financing receivable represents receivables derived from the internet finance business. Financing receivable is recorded at amortized cost, reduced by a valuation allowance estimated as of the balance sheet date. The amortized cost of a financing receivable is equal to the unpaid principal balance, plus net deferred origination costs. Net deferred origination costs are comprised of certain direct origination costs, net of origination fees received. Origination fees include fees charged to the individuals or companies that increase the financing’s effective yield. Direct origination costs in excess of origination fees received are included in the financing receivable and amortized over the financing term using the effective interest method. Financing origination costs are limited to direct costs attributable to originating the financing, including commissions and personnel costs directly related to the time spent by those individuals performing activities related to the origination.
Allowance for financing receivable	Allowance for financing receivable An allowance for financing receivable is established through periodic charges to the provision for financing receivable losses when the Company believes that the future collection of principal is unlikely. Subsequent recoveries, if any, are recorded as credits against the allowance. The Company evaluates the creditworthiness of its portfolio based on a pooled basis due to the composition of homogeneous financing with similar size and general credit risk characteristics for similar financing businesses. The Company considers the credit worthiness of the individuals and the companies receiving financing, aging of the outstanding financing receivable and other specific circumstances related to the financing when determining the allowance for financing receivable. The allowance is subjective as it requires material estimates including such factors as known and inherent risks in the financing portfolio, adverse situation that may affect the ability of the individuals and the companies receiving financing to repay and current economic conditions. Recovery of the carrying value of financing receivable is dependent to a great extent on conditions that are beyond the Company’s control.
Nonaccrual financing receivable	Nonaccrual financing receivable Financing income is calculated based on the contractual rate of the financing and recorded as financing income over the life of the financing using the effective interest method. Financing receivables are placed on non-accrual status upon reaching 90 days past due for these arising from financing for installment sales and apartment rental financing, or when reasonable doubt exists as to the full, timely collection of the financing receivable. When a financing receivable is placed on non-accrual status, the Company stops accruing financing income. Financing receivable is returned to accrual status if the related individual or company has performed in accordance with the contractual terms for a reasonable period of time and, in the Company’s judgment, will continue to make period principal and financing income payments as scheduled. The Company writes off its nonaccrual financing receivable by considering factors including (i) death of the borrower; or (ii) its inability to reach the borrower.
Transfer of financial instruments	Transfer of financial instruments Sales and transfers of financial instruments are accounted under authoritative guidance for the transfers and servicing of financial assets and extinguishment of liabilities. Through the peer-to-peer platforms and the Plans, the Company identifies individual investors and transfers creditors’ rights originated from the aforementioned financing services to the individual investors. The Company further offers different investment periods to investors with various annual interest rates while those credit rights are held by the investors. The term of the sales require the Company to repurchase those creditors’ rights from investors prior to or upon the maturity of the investment period. As a result, the sales of those creditors’ rights are not accounted for as a sale and remain on the consolidated balance sheet and are recorded as payable to investors in the Company’s consolidated balance sheet.
Inventory	Inventory Inventory primarily consists of the purchased used and new automobiles. Inventory cost is determined by specific identification. Net realizable value is the estimated selling price less costs to complete, dispose and transport the vehicles. Selling prices are derived from historical data and trends, such as sales price and inventory turn times of similar vehicles, as well as independent, market resources. Each reporting period the Company recognizes any necessary adjustments to reflect vehicle inventory at the lower of cost or net realizable value through cost of sales in the accompanying consolidated statements of operations. Inventory write-downs are established based on management’s review on a vehicle-by-vehicle basis for slow moving and obsolete items. On a quarterly basis, the management examines an inventory report. The vehicle is considered slow moving if it has not been sold within a 90 days period since procurement, in light of the fact that the Company’s average inventory turnover days during the years ended December 31, 2017 and 2018, were 80 days and 63 days, respectively. In estimating the level of inventory write-downs for slow moving vehicles, the Company considers historical data and forecasted customer demand, such as sales price and inventory turn times of similar vehicles with similar mileage and condition, as well as independent, market information. This valuation process requires management to make judgements, based on currently available information, and assumptions about future demand and market conditions, which are inherently uncertain. To the extent that there are significant changes to estimated vehicle selling prices or decreases in demand for used vehicles, there could be significant adjustment to reflect inventory at net realizable value. In August 2018, Shandong Jieying Huaqi Auto Service Co. ("Ji’nan Dealership", a subsidiary of the Company's VIE's) received a notice from the local police regarding an investigation of the dealership's premises. The Company believes the investigation is an isolated individual activity of the minority shareholder who holds 30% of the Ji’nan Dealership’s equity interest. Certain assets of Ji’nan Dealership are not accessible pursuant to the investigation. In connection with these events, the Company determined that it is probable that it cannot enforce the realization of the inventory value at the Ji’nan Dealership. As a result, the Company wrote off all inventory which totaled US$5.7 million during the year ended December 31, 2018.
Property and equipment, net	Property and equipment, net Property and equipment, net is carried at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the following estimated useful lives: Building 46 years Computer equipment and application software 2-3 years Furniture and vehicles 5 years Leasehold improvements Over the lesser of the lease term or useful life of the assets
Intangible assets with indefinite lives	Intangible assets with indefinite lives Intangible assets with indefinite lives mainly include trademark and licenses. If an intangible asset is determined to have an indefinite life, it is not be amortized until its useful life is determined to be no longer indefinite. An intangible asset that is not subject to amortization is tested for impairment at least annually or more frequently if events or changes in circumstances indicate that the asset might be impaired. Such impairment test consists of comparing the fair values of assets and their carrying value amounts and an impairment loss is recognized if and when the carrying amounts exceed the fair values. The estimates of fair values of intangible assets not subject to amortization are determined using various discounted cash flow valuation methodologies. Significant assumptions are inherent in this process, including estimates of discount rates. Discount rate assumptions are based on an assessment of the risk inherent in the respective intangible assets. For the years ended December 31, 2016, 2017 and 2018, the Company
Impairment of long-lived assets and intangible assets with definite lives	Impairment of long-lived assets and intangible assets with definite lives Long-lived assets, such as property and equipment and definite-lived intangible assets are stated at cost less accumulated depreciation or amortization. Depreciation and amortization is computed using the straight-line method. The Company evaluates the recoverability of long-lived assets, including identifiable intangible assets, with determinable useful lives whenever events or changes in circumstances indicate that an intangible asset's carrying amount may not be recoverable. The Company measures the carrying amount of long-lived asset against the estimated undiscounted future cash flows associated with it. Impairment exists when the sum of the expected undiscounted future net cash flows is less than the carrying value of the asset being evaluated. Impairment loss is calculated as the amount by which the carrying value of the asset exceeds its fair value. Fair value is estimated based on various valuation techniques, including the discounted value of estimated future cash flows. The evaluation of asset impairment requires the Company to make assumptions about future cash flows over the life of the asset being evaluated. These assumptions require significant judgment and actual results may differ from assumed and estimated amounts. For the years ended December 31, 2016, 2017 and 2018, the Company recorded impairment losses of $nil, $nil and $675 for definite-lived intangible assets, respectively.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in business combinations. Goodwill is not amortized, but tested for impairment upon first adoption and annually, or more frequently if event and circumstances indicate that they might be impaired. The Company has an option to first assess qualitative factors to determine whether it is necessary to perform the two-step quantitative goodwill impairment test. In the qualitative assessment, the Company considers primary factors such as industry and market considerations, overall financial performance of the reporting unit, and other specific information related to the operations. Based on the qualitative assessment, if it is more likely than not that the fair value of each reporting unit is less than the carrying amount, the quantitative impairment test is performed. Application of the goodwill impairment test requires judgment, including the identification of reporting units, assignment of assets and liabilities to reporting units, assignment of goodwill to reporting units, and determination of the fair value of each reporting unit. The fair value of each reporting unit is estimated using a discounted cash flow methodology. This analysis requires significant judgments, including estimation of future cash flows, which is dependent on internal forecasts, and assumptions that are consistent with the plans and estimates being used to manage the Company's business, estimation of the long-term rate of growth for the Company's business, estimation of the useful life over which cash flows will occur, and determination of the Company's weighted average cost of capital. The estimates used to calculate the fair value of a reporting unit change from year to year based on operating results and market conditions. Changes in these estimates and assumptions could materially affect the determination of fair value and goodwill impairment for the reporting unit. In performing the two-step quantitative impairment test, the first step compares the fair values of each reporting unit to its carrying amount, including goodwill. If the fair value of a reporting unit exceeds its carrying amount, goodwill is not considered impaired and the second step will not be required. If the carrying amount of a reporting unit exceeds its fair value, the second step compares the implied fair value of the affected reporting unit's goodwill to the carrying value of that goodwill. The implied fair value of goodwill is determined in a manner similar to accounting for a business combination with the allocation of the assessed fair value determined in the first step to the assets and liabilities of the reporting unit. The excess of the fair value of the reporting unit over the amounts assigned to the assets and liabilities is the implied fair value of goodwill. This allocation process is only performed for purposes of evaluating goodwill impairment and does not result in an entry to adjust the value of any assets or liabilities. An impairment loss is recognized for any excess in the carrying value of goodwill over the implied fair value of goodwill. In estimating the fair value of each reporting unit the Company estimates the future cash flows of each reporting unit, the Company has taken into consideration the overall and industry economic conditions and trends, market risk of the Company and historical information.
Revenue recognition	Revenue recognition The Company recognizes revenue when control of the good or service has been transferred to the customer, generally either at the time of sale or upon delivery to a customer. The contracts have a fixed contract price and revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring goods or providing services. The Company collect value added tax and other taxes from customers on behalf of governmental authorities at the time of sale. These taxes are accounted for on a net basis and are not included in net sales and operating revenues or cost of sales. The Company generally expense sales commissions when incurred because the amortization period would have been less than one year. These costs are recorded within selling expenses. The Company does not have any significant financing payment terms as payment is received at or shortly after the point of sale. The Company adopted the Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”) on January 1, 2018 using the modified retrospective method. ASC 606 prescribes a five-step model that includes: (1) identify the contract; (2) identify the performance obligations; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations; and (5) recognize revenue when (or as) performance obligations are satisfied. Based on the manner in which the Company historically recognized revenue, the adoption of ASC 606 did not have a material impact on the amount or timing of its revenue recognition and the Company recorded no cumulative effect adjustment upon adoption. Additionally, the Company concluded that revenue generated from internet finance services is excluded from the scope of the new revenue standard as it represents revenue within the scope of ASC 310, Receivables, which is explicitly excluded from the scope of ASC 606. The Company's revenues include revenue from its used car sales, revenue from IVAS and others as well as revenue related to its finance services. Disaggregation of Revenue The Company's revenues include revenue from its used car sales, revenue from IVAS and others as well as revenue related to its finance services. The following table illustrates the Company’s revenue disaggregated by segments: Years ended December 31, 2016 2017 2018 Renren $ 18,097 $ 21,931 $ 19,122 Auto Group 29,384 152,693 479,076 Total $ 47,481 $ 174,624 $ 498,198 The following table presents the Company’s revenues disaggregated by revenue types. Years ended December 31, 2016 2017 2018 Automobile sales $ — $ 121,084 $ 467,232 IVAS and others 18,164 24,271 28,510 Financing income 29,317 29,269 2,456 Total $ 47,481 $ 174,624 $ 498,198 Revenues from automobile sales were generated by the Auto Group segment. Revenues from IVAS and others were US$18,164, US$24,271 and US$28,510, for the years ended December 31, 2016, 2017 and 2018, respectively, among which, US$ 18,096, US$ 21,931 and US$ 18,983 were generated by the Renren segment, and the remaining IVAS and others revenues were generated by the Auto Group segment. Revenues from financing income were US$29,317, US$29,269 and US$2,456, for the years ended December 31, 2016, 2017 and 2018, respectively, among which, US$ 1, US$ nil and US$ 139 were generated by the Renren segment, and the remaining financing income revenues were generated by the Auto Group segment. Automobile sales The Company purchases automobiles from unrelated individuals, third party dealerships or manufacturers and suppliers and sells them directly to its customers through its local . The prices of used vehicles are set forth in the customer contracts which are agreed prior to delivery. The Company satisfies its performance obligation for used vehicle sales upon delivery when the transfer of title, risks and awards of ownership and control pass to the owner. The Company recognizes revenue at the agreed upon purchase price stated in the contract, including any delivery charges. When cash is received from customers prior to delivery of the vehicle, the Company records such cash as advance from customers in its consolidated balance sheet, which is immaterial as of December 31, 2018. IVAS and others The Company’s IVAS revenues mainly include live streaming revenue. The Company designs, creates and offers various virtual items for sales to users with pre-determined stand-alone selling price. Revenue related to each of consumable virtual items as a single performance obligation provided on a consumption basis, is recognized at the point in time when the virtual item is transferred directly to the users and consumed by them. The Company’s other revenues mainly include revenue generated from agency fees in connection with arrangement with third party dealers whereas the company facilitates sales of their cars. The Company does not control the ownership of the automobiles, but rather is acting as an agent for the third party dealers. Revenue is recognized for the net amount of commission the Company is entitled to retain in exchange for the agency service. Other revenues also includes commissions received by the Company from insurance companies and banks for its facilitation services provided to assist customers obtaining related insurance and financing for their automobile purchases. Financing services The Company provides short-term financing services to used car dealers to fund the car dealers’ cash needs for used car purchasing. The financing period is no more than six months and is secured by a pledge of the dealers' used car with total value exceeding the principal of the financing. The Company charges an upfront service fee as well as financing income on a monthly basis. Revenue related to used car financing services amounted to $17,854, $25,399 and $2,297 during the years ended December 31, 2016, 2017 and 2018. The remaining financing income in the respective periods related to crediting financing provided to college students as well as apartment rental financing, both of which were terminated during the year ended December 31, 2016. Contract balances Timing of revenue recognition may differ from the timing of invoicing to customers. Accounts receivable represents amounts invoiced and revenue recognized prior to invoicing when the Company has satisfied the Company’s performance obligation and has the unconditional right to payment. The balance of accounts receivable, net of allowance for doubtful accounts were Deferred revenue mainly consists of payments received from customers related to unsatisfied performance obligations for IVAS business at the end of the period. Advance from customers represent cash received from customers prior to delivery of the vehicle, which was included in accrued expenses and other current liabilities in the Company’s consolidated balance sheets. As of December 31, 2017, the Company’s total deferred revenue was $11,433, of which $11,245 was recognized as revenue for the year ended December 31, 2018. The Company’s total unearned revenue was $ 3,716 as of December 31, 2018. The Company applied a practical expedient to expense costs as incurred for costs to obtain a contract with a customer when the amortization period would have been one year or less. These costs include certain commissions paid to intermediaries of automobile sales. The Company has no material incremental costs of obtaining contracts with customers that the Company expects the benefit of those costs to be longer than one year which need to be recognized as assets.
Cost of revenues	Cost of revenues Cost of revenues consists of costs directly related to automobile sales, IVAS business and others as well as costs incurred related to the used car financing operations which mostly include interest expenses paid to investors on Renren Licai and interest paid for asset-backed securities. Cost of revenue also includes allowances for financing receivable loss which amounted to $12,436, $12,745 and $10,802 during the years ended December 31, 2016, 2017 and 2018, respectively.
Business taxes	Business taxes The Company reports revenue net of business taxes. Business taxes deducted in arriving at net revenue during 2016, 2017 and 2018 were $77, $ nil and $nil, respectively.
Value added taxes	Value added taxes Value-added taxes ("VAT") is also reported as a deduction to revenue when incurred and amounted to $4,080, $9,777 and $15,796 for the years ended December 31, 2016, 2017 and 2018, respectively. 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 expense and other current liabilities on the consolidated balance sheet. In 2018, the Company entered into a series of ancillary agreements to facilitate its sale of used cars for value-added tax optimization purposes. Under these ancillary agreements, when the Company sources a used car, the legal title of the car is transferred to an executive of the Company’s subsidiary and the registration is transferred to the name of one of the dealership employees. The Company viewed itself as a service provider in the used car transactions, and therefore is only subject to value-added tax on the difference between the original purchase price and the retail price of the used cars.
Income taxes	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 basis of assets and liabilities and their reported amounts in the financial statements and are recorded as non-current in the consolidated balance sheet. 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 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 Company did not recognize any income tax due to uncertain tax position or incur any interest and penalties related to potential underpaid income tax expenses for the years ended December 31, 2016, 2017 and 2018, respectively.
Financial instruments	Financial instruments Financial instruments include cash and cash equivalents, restricted cash, accounts receivable, financing receivable, amounts due from/to related parties, long-term financing receivable, long-term investments, accounts payable, short-term debt, payable to investors and long-term debt. Refer to Note 18 for further details.
Research and development expenses	Research and development expenses Research and development expenses are primarily incurred for development of new services, features and products for the Company's internet finance business, used automotive business, as well as to further improve the Company's technology infrastructure to support these businesses. The Company has expensed all research and development costs when incurred.
Foreign currency translation	Foreign currency translation The functional and reporting currency of the Company is the United States dollar ("US dollar"). The financial records of the Company's subsidiaries and VIEs located in the PRC and Hongkong are maintained in their local currencies, Renminbi ("RMB") and Hong Kong Dollar ("HKD"), respectively, 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 ruling at the balance sheet date. Transactions in currencies other than the functional currency during the year are converted into functional currency at the applicable rates of exchange prevailing when the transactions occurred. Transaction gains and losses are recognized in the statements of operations. The Company's entities with functional currency of RMB and HKD, translate their operating results and financial positions into US dollar, the Company's reporting currency. Assets and liabilities are translated using the exchange rates in effect on the balance sheet date. Equity amounts are translated at historical exchange rates. Revenues, expenses, gains and losses are translated using the average rates for the year. Translation adjustments are reported as cumulative translation adjustments and are shown as a separate component in the statements of comprehensive (loss) income.
Comprehensive (loss) income	Comprehensive (loss) income Comprehensive (loss) income includes net (loss) income, foreign currency translation adjustments and fair value changes of available-for-sale investments of the Company. Additionally, the Company's consolidated statement of comprehensive (loss) income also includes the cumulative effect adjustment for the net unrealised loss of equity securities with determinable fair value from accumulated other comprehensive income to the opening balance of accumulated deficit related to the adoption of ASU 2016-01 (see Note 2).
Share-based compensation	Share-based compensation Share-based payment transactions with employees, such as share options are measured based on the grant date fair value of the equity instrument. The Company recognizes the compensation costs net of estimated forfeitures using the straight-line method, over the applicable vesting period. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures will be recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock compensation expense to be recognized in future periods. Share options granted to employees with market conditions attached are measured at fair value on the grant date and are recognized as the compensation costs over the estimated requisite service period, regardless of whether the market condition has been met. A change in any of the terms or conditions of share options is accounted for as a modification of stock options. The Company calculates the incremental compensation cost of a modification as the 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 Company recognizes incremental compensation cost in the period the modification occurred. For unvested options, the Company 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.
Loss (income) per share	(Loss) income per share Basic loss per ordinary share is computed by dividing net loss attributable to ordinary shareholders by the weighted average number of ordinary shares outstanding during the period. Diluted earnings per ordinary share reflect the potential dilution that could occur if securities were exercised or converted into ordinary shares. The Company had stock options, which could potentially dilute basic earnings per share in the future. Potential ordinary shares in the diluted net loss per share computation are excluded in periods of losses from continuing operations as their effect would be anti-diluted.
Accounting pronouncements newly adopted	Accounting pronouncements newly adopted In January, 2016, the FASB issued a new pronouncement ASU 2016-01, “Financial Instruments–Overall”, 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 US 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 Company adopted this ASU on January 1, 2018, and a cumulative-effect adjustment of $7,363 was recorded to the beginning accumulated deficit of 2018. In August 2016, the FASB issued a new pronouncement ASU 2016-15, which amends the guidance in ASC 230 on the classification of certain cash receipts and payments in the statement of cash flows. The primary purpose of the ASU is to reduce the diversity in practice that has resulted from the lack of consistent principles on this topic. The ASU’s amendments add or clarify guidance on eight cash flow issues:  Debt prepayment or debt extinguishment costs.  Settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing.  Contingent consideration payments made after a business combination.  Proceeds from the settlement of insurance claims.  Proceeds from the settlement of corporate-owned life insurance policies, including bank-owned life insurance policies.  Distributions received from equity method investees.  Beneficial interests in securitization transactions.  Separately identifiable cash flows and application of the predominance principle. For public business entities, the guidance in the ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted for all entities. Entities must apply the guidance retrospectively to all periods presented but may apply it prospectively from the earliest date practicable if retrospective application would be impracticable. The Company has adopted the new standard as of January 1, 2018, which did not result in a material impact on its consolidated financial statements. In November 2016, the FASB issued a new pronouncement, ASU 2016-18, which amends ASC 230 to add or clarify guidance on the classification and presentation of restricted cash in the statement of cash flows. Key requirements of the ASU are as follows:  An entity should include in its cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. The ASU does not define the terms “restricted cash” and “restricted cash equivalents” but states that an entity should continue to provide appropriate disclosures about its accounting policies pertaining to restricted cash in accordance with other GAAP. The ASU also states that any change in accounting policy will need to be assessed under ASC 250.  A reconciliation between the statement of financial position and the statement of cash flows must be disclosed when the statement of financial position includes more than one line item for cash, cash equivalents, restricted cash, and restricted cash equivalents.  Changes in restricted cash and restricted cash equivalents that result from transfers between cash, cash equivalents, and restricted cash and restricted cash equivalents should not be presented as cash flow activities in the statement of cash flows.  An entity with a material balance of amounts generally described as restricted cash and restricted cash equivalents must disclose information about the nature of the restrictions. For public business entities, the amendments are effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments should be applied using a retrospective transition method to each period presented. The Company adopted this ASU beginning January 1, 2018 on a retrospective basis. The adoption of this guidance impacted the presentation and classification of restricted cash in the Company’s consolidated statements of cash flows. For the years ended December 31, 2017 and 2016, substantially all the changes in restricted cash amounting to $39,049 and $9,630 previously reported in investing activities and $nil and $100,000 previously reported in financing activities were reclassified to total cash, cash equivalents, and restricted cash in the statement of cash flows and has applied the changes to the consolidated statements of cash flows. 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. In July 2018, ASU 2016-02 was updated with ASU No. 2018-11, Targeted Improvements to ASC 842, which provides entities with relief from the costs of implementing certain aspects of the new leasing standard. Specifically, under the amendments in ASU 2018-11, (1) entities may elect not to recast the comparative periods presented when transitioning to ASC 842 (the "optional transition method") and (2) lessors may elect not to separate lease and non-lease components when certain conditions are met. Before ASU 2018-11 was issued, transition to the new lease standard required application of the new guidance at the beginning of the earliest comparative period presented in the financial statements. The Company is in the process of evaluating the effect of the adoption of this ASU and expects the adoption will result in an increase in the assets and liabilities on the consolidated balance sheet for the operating leases and will have an insignificant impact on the consolidated statements of operations. In June 2016, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which is intended to improve financial reporting by requiring timelier recording of credit losses on loans and other financial instruments held by financial institutions and other organizations. The ASU requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better inform their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. Organizations will continue to use judgment to determine which loss estimation method is appropriate for their circumstances. The ASU requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. These disclosures include qualitative and quantitative requirements that provide additional information about the amounts recorded in the financial statements. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. The ASU is effective for SEC filers for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early application will be permitted for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Companies are required to apply the amendments of this ASU using a modified retrospective approach through a cumulative effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. A prospective transition approach is required for debt securities for which an other-than temporary impairment has been recognized before the effective date. The Company is currently evaluating the impact on its consolidated financial statements of adopting this guidance. In January 2017, the FASB issued ASU 2017-04: Intangibles — Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. To simplify the subsequent measurement of goodwill, the Board eliminated Step 2 from the goodwill impairment test. Under the amendments in this Update, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. An entity should apply the amendments in this Update on a prospective basis. An entity is required to disclose the nature of and reason for the change in accounting principle upon transition. A public business entity should adopt the amendments in this Update for its annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. In August 2018, the FASB issued ASU 2018-13 related to disclosure requirements for fair value measurements. The pronouncement eliminates, modifies and adds disclosure requirements for fair value measurements. The pronouncement is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2019, with early adoption permitted. The Company is currently in the process of evaluating the effects of this pronouncement on our consolidated financial statements, including potential early adoption. In October 2018, the FASB issued ASU 2018-17, Consolidation (Topic 810): Targeted Improvements to the Related Party Guidance for Variable Interest Entities. ASU 2018-17 changes how entities evaluate decision-making fees under the variable interest entity guidance. To determine whether decision-making fees represent a variable interest, an entity considers indirect interests held through related parties under common control on a proportional basis, rather than in their entirety. This guidance will be adopted using a retrospective approach and is effective for the Company on January 1, 2020. The Company is evaluating the effect that adoption of this guidance will have on its consolidated financial statements and related disclosures.

ORGANIZATION AND PRINCIPAL AC_2

ORGANIZATION AND PRINCIPAL ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Schedule of percentage of legal ownership by Renren Inc	As of December 31, 2018, Renren Inc.'s subsidiaries, VIEs and VIEs' major subsidiaries are as follows: Later of date Percentage of of incorporation Place of legal ownership Name of Subsidiaries or acquisition incorporation by Renren Inc. Principal activities Subsidiaries: CIAC/ChinaInterActiveCorp ("CIAC") August 5, 2005 Cayman Islands 100 % Investment holding Kaixin Auto Group (formerly named as Renren Wealth Inc.) March 7, 2011 Cayman Islands 100 % Investment holding Link224 Inc. May 31, 2011 Cayman Islands 100 % Investment holding Wole Inc. October 27, 2011 Cayman Islands 100 % Investment holding JiehunChina Inc. ("JiehunChina") June 14, 2011 Cayman Islands 100 % Investment holding Renren Gongying Inc. October 2, 2015 Cayman Islands 100 % Investment holding Renren Finance, Inc. December 15, 2014 Cayman Islands 100 % Internet business Renren CRSP Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren PLML Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren KURY Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren ONER Holdings Inc. October 14, 2016 Cayman Islands 100 % Investment holding Renren BLCR Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren ZHCH Holdings Inc. October 14, 2016 Cayman Islands 100 % Inactive company Renren LSTAR Holdings Inc. October 17, 2016 Cayman Islands 100 % Inactive company Renren CHRYPH Holdings Inc. October 31, 2016 Cayman Islands 100 % Inactive company Jet Sound Hong Kong Company Limited May 7, 2011 Hong Kong 100 % Investment holding Renren Game Hong Kong Limited ("Game HK") March 8, 2012 Hong Kong 100 % Investment holding Renren Winday Company Limited. July 26, 2016 Hong Kong 100 % Inactive company Renren Giantly Limited. August 16, 2016 Hong Kong 100 % Investment holding Renren Gentle Height Company Limited. December 7, 2016 Hong Kong 100 % Investment holding Chime Technologies, Inc. September 7, 2012 USA 100 % SaaS business Renren U.S. Holdco, Inc. July, 2017 USA 100 % Investment holding Sindeo Inc. July 3, 2017 USA 100 % Inactive company Geographic Farming LLC Auguest 24, 2017 USA 100 % SaaS business Trucker Path Inc. December 28, 2017 USA 100 % Internet business Lucrativ Inc. January 22, 2018 USA 100 % SaaS business Renren Giantly Philippines Inc. March, 2018 Philippines 100 % SaaS business Qianxiang Shiji Technology Development (Beijing) Co., Ltd. ("Qianxiang Shiji") March 21, 2005 PRC 100 % Investment holding Beijing Woxiu Information Technology Co. Ltd. ("Beijing Woxiu") October 27, 2011 PRC 100 % Investment holding Beijing Jiexun Shiji Technology Development Co., Ltd. ("Jiexun Shiji") April 26, 2012 PRC 100 % Investment holding Renren Huijin (Tianjin) Technology Co., Ltd. ("Huijin") October 10, 2012 PRC 100 % Investment holding Joy Interactive (Beijing) Technology Development Co., Ltd. April 24, 2013 PRC 100 % Investment holding Shanghai Renren Financial Leasing Co., Ltd May 25, 2015 PRC 100 % Financing business Shanghai Renren Automobile Technology Co., Ltd August 18, 2017 PRC 100 % Investment holding Shanghai Zhoushuo Automobile Technology Co., Ltd January 18, 2018 PRC 100 % Investment holding Ji’nan Zhoushuo Yidong Automobile Commerce Co., Ltd January 17, 2018 PRC 70 % Automobile business Suzhou Zhoushuo Lujie Automobile Service Co., Ltd February 7, 2018 PRC 70 % Automobile business Shanghai Lingcong Internet Information Technology Co. Ltd. January 18, 2018 PRC 100 % Investment holding Shanghai Jiexun Automobile Sales Co. Ltd. February 2, 2018 PRC 100 % Investment holding Shanghai Lingding Automobile Technology Co., Ltd. April 12, 2018 PRC 100 % Investment holding Shanghai DingranInformation Technology Co. Ltd. April 12, 2018 PRC 100 % Investment holding Renren Zhenhan Technology Development (Beijing) Co., Ltd November 13, 2017 PRC 100 % Investment holding Variable Interest Entities: Beijing Qianxiang Tiancheng Technology Development Co., Ltd. ("Qianxiang Tiancheng") October 28, 2002 PRC N/A IVAS business Guangzhou Xiuxuan Brokers Co., Ltd.(“Guangzhou Xiuxuan”) September 22, 2014 PRC N/A IVAS business Shanghai Qianxiang Changda Internet Information Technology Development Co., Ltd. ("Shanghai Changda") October 25, 2010 PRC N/A Internet business Shanghai Jieying Automobile Sales Co., Ltd. ("Shanghai Jieying") Feburay 27, 2017 PRC N/A Automobile business Major subsidiaries of Variable Interest Entities: Beijing Qianxiang Wangjing Technology Development Co., Ltd. ("Qianxiang Wangjing") November 11, 2008 PRC N/A Internet business Beijing Wole Shijie Information Technology Co., Ltd. ("Wole Shijie") October 27, 2011 PRC N/A Technology development and service Beijing Kirin Wings Technology Development Co., Ltd. January 16, 2013 PRC N/A Internet business Shanghai Wangjing Commercial Factoring Co., Ltd. July 28, 2015 PRC N/A Factoring business Beijing Jingwei Zhihui Information Technology Co., Ltd. (“Jingwei Zhihui”) March 19, 2014 PRC N/A Internet business Shanghai Wangjing Investment Management Co., Ltd. April 20, 2015 PRC N/A Internet business Shanghai Mumian Interactive Internet Information Service Co., Ltd. June 16, 2016 PRC N/A IVAS business Fenqi Winday Company Limited, February 29, 2016 Hong Kong N/A Internet business Guangzhou Qunge Information Technology Co., Ltd. August 26, 2016 PRC N/A IVAS business Shanghai Heiguo Internet Information Technology Co., Ltd. Feburary 27,2017 PRC N/A Investment holding Renren Zhencai Technology Development (Beijing) Co., Ltd. December 15, 2017 PRC N/A Investment holding Jieying Baolufeng Automobile Sales (Shenyang) Co., Ltd. June 14, 2017 PRC N/A Automobile business Chongqing Jieying Shangyue Automobile Sales Co., Ltd. July 3, 2017 PRC N/A Automobile business Jiangsu Jieying Ruineng Automobile Sales Co., Ltd. May 16, 2017 PRC N/A Automobile business Dalian Yiche Jieying Automobile Sales Co., Ltd. June 27, 2017 PRC N/A Automobile business Henan Jieying Hengxin Automobile Sales Co., Ltd. June 29, 2017 PRC N/A Automobile business Shanxi Jieying Weilan Automobile Sales and Service Co., Ltd. March 13, 2018 PRC N/A Automobile business Shandong Jieying Huaqi Automobile Service Co., Ltd. July 20, 2017 PRC N/A Automobile business Neimenggu Jieying Kaihang Automobile Sales Co., Ltd. July 14, 2017 PRC N/A Automobile business Hangzhou Jieying Yifeng Automobile Sales Co., Ltd. August 1, 2017 PRC N/A Automobile business Jilin Jieying Taocheguan Automobile Sales Co., Ltd. October 31, 2017 PRC N/A Automobile business Suzhou Jieying Chemaishi Automobile Sales Co., Ltd. October 27, 2017 PRC N/A Automobile business Cangzhou Jieying Bole Automobile Sales Co., Ltd. August 10, 2017 PRC N/A Automobile business Shanghai Jieying Diyi Automobile Sales Co., Ltd. October 19, 2017 PRC N/A Automobile business Ningxia Jieying Xianzhi Automobile Sales Co., Ltd. July 26, 2017 PRC N/A Automobile business Wuhan Jieying Chimei Automobile Sales Co., Ltd. November 20, 2017 PRC N/A Automobile business
Schedule of consolidated financial information	As of December 31, 2017 2018 Cash and cash equivalents $ 5,198 $ 9,363 Restricted cash 51 - Accounts receivable, net 1,423 2,215 Financing receivable, net 145 - Inventory 95,012 57,859 Prepaid expenses and other current assets 35,686 46,247 Amounts due from related parties 865 20,008 Assets of discontinued operations - current 15,646 - Total current assets 154,026 135,692 Property and equipment, net 491 489 Long-term investments 11,901 1,900 Goodwill 89,274 64,364 Amounts due from a related party - non-current - 40,000 Restricted cash – non-current 345 363 Other non-current assets 468 747 Assets of discontinued operations – non-current 32,116 - Total non-current assets 134,595 107,863 Total assets $ 288,621 $ 243,555 Accounts payable $ 18,525 $ 6,849 Short-term debt 12,296 29,816 Accrued expenses and other current liabilities 15,644 19,135 Payable to investors 7,153 15 Amounts due to related parties 7,013 28 Deferred revenue 10,108 3,099 Contingent consideration 5,944 11,929 Income tax payable 9,455 10,920 Current liabilities of discontinued operations 3,786 - Total current liabilities 89,924 81,791 Long-term contingent consideration 60,850 88,098 Total non-current liabilities 60,850 88,098 Total liabilities $ 150,774 $ 169,889 Years ended December 31, 2016 2017 2018 Net revenues $ 46,040 $ 153,759 $ 486,388 Loss from continuing operations $ (13,035 ) $ (19,250 ) $ (82,304 ) Loss from discontinued operations $ (18,133 ) $ (22,995 ) $ (5,220 ) Years ended December 31, 2016 2017 2018 Net cash provided by (used in) operating activities $ 68,374 $ (146,911 ) $ (14,403 ) Net cash (used in) provided by investing activities $ (187,621 ) $ 22,943 $ (11,441 ) Net cash provided by financing activities $ 148,080 $ 37,208 $ 27,018
Schedule of Consolidated Assets Backed Financing Entities	The following financial statement amounts and balances of the Plans were included in the accompanying consolidated financial statements after elimination of intercompany transactions and balances: As of December 31, 2017 2018 Financing receivable, net $ 78,485 $ - Total assets $ 78,485 $ - Accrued expenses and other current liabilities $ 4 $ - Payable to investors 64,087 - Total liabilities $ 64,091 $ - Years ended December 31, 2016 2017 2018 Net revenues - - - Net loss $ 375 $ 91 $ 36 Years ended December 31, 2016 2017 2018 Net cash provided by operating activities - - - Net cash provided by investing activities - - - Net cash provided by financing activities - - -

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Property Plant And Equipment Estimated Useful Lives [Table Text Block]	Property and equipment, net is carried at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the following estimated useful lives: Building 46 years Computer equipment and application software 2-3 years Furniture and vehicles 5 years Leasehold improvements Over the lesser of the lease term or useful life of the assets
Disaggregation of Revenue [Table Text Block]	The Company's revenues include revenue from its used car sales, revenue from IVAS and others as well as revenue related to its finance services. The following table illustrates the Company’s revenue disaggregated by segments: Years ended December 31, 2016 2017 2018 Renren $ 18,097 $ 21,931 $ 19,122 Auto Group 29,384 152,693 479,076 Total $ 47,481 $ 174,624 $ 498,198 The following table presents the Company’s revenues disaggregated by revenue types. Years ended December 31, 2016 2017 2018 Automobile sales $ — $ 121,084 $ 467,232 IVAS and others 18,164 24,271 28,510 Financing income 29,317 29,269 2,456 Total $ 47,481 $ 174,624 $ 498,198

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2018
DISCONTINUED OPERATIONS [Line Items]
Cash Flow Statement, Discontinued Operations	The condensed cash flow for the Online Gaming was as follows for the year ended December 31, 2016: Year ended December 31, 2016 Net cash provided by operating activities $ 11,171 Net cash provided by investing activities $ 25
Summary of operating results from discontinued operations included in the Company's consolidated statement of operations	The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the year ended December 31, 2016. Year ended December 31, 2016 Renren Games Major classes of line items constituting pretax profit (loss) of discontinued operations Net revenues $ 1,699 Cost of revenues (871 ) Selling, research and development, and general and administrative expenses (485 ) Impairment of intangible assets - Other income and expenses that are not major 150 Income from the operations of the discontinued operations, before income tax 493 Income tax expenses (102 ) Income from the operations of the discontinued operations, net of tax 391 Gain on deconsolidation of the subsidiaries, net of tax 8,310 Gain on disposal of equity method investment, net of tax - Gain from the discontinued operations, net of tax $ 8,701
Renren Games [Member]
DISCONTINUED OPERATIONS [Line Items]
Schedule of calculation of gain (loss) on deconsolidation	On March 31, 2016, the Company calculated a gain regarding such disposition as follows: As of March 31, 2016 The proceeds $ 17,500 Less: The repayment of intercompany loans provided by the Company 7,500 Net consideration 10,000 Less: Cash and cash equivalents 15,982 Prepaid expenses and other current assets 2,737 Property and equipment, net 194 Intangible assets, net 263 Other non-current assets 1,508 Accounts payable (1,209 ) Accrued expenses and other current liabilities (7,062 ) Amount due to the Company (7,500 ) Deferred revenue (3,677 ) Net assets of Online Gaming 1,236 Less: Tax expenses 454 Gain on deconsolidation of Online Gaming $ 8,310
Renren SNS [Member]
DISCONTINUED OPERATIONS [Line Items]
Schedule of calculation of gain (loss) on deconsolidation	On December 29, 2018, the Company calculated a gain regarding the disposal of the SNS Business as follows. As of December 31, 2018 Total proceeds $ 60,000 Less: Property and equipment, net 8 Net assets of Renren SNS 8 Less: Accumulated other comprehensive income 336 Less: Tax expenses - Gain on deconsolidation of Renren SNS $ 59,656
Cash Flow Statement, Discontinued Operations	The carrying amounts of assets and liabilities recorded as discontinued operations in the consolidated balance sheet in connection with SNS as of December 31, 2017 were immaterial. The condensed cash flow from operating of Renren SNS Business were as follows for the years ended December 31, 2016, 2017 and 2018. The condensed cash flow from investing of Renren SNS Business were immaterial. Years ended December 31, 2016 2017 2018 Renren SNS Renren SNS Renren SNS Net cash used in operating activities (22,589 ) (8,144 ) (1,437 )
Summary of operating results from discontinued operations included in the Company's consolidated statement of operations	The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the years ended December 31, 2016, 2017 and 2018. Years ended December 31, 2016 2017 2018 Renren SNS Renren SNS Renren SNS Major classes of line items constituting pretax profit of discontinued operations Net revenues $ 10,956 $ 22,372 $ 19,679 Cost of revenues (9,545 ) (17,264 ) (14,997 ) Selling, research and development, and general and administrative expenses (20,279 ) (13,536 ) (7,523 ) Loss from the operations of the discontinued operations, before income tax (18,868 ) (8,428 ) (2,841 ) Income tax expenses - - - Loss from the operations of the discontinued operations, net of tax (18,868 ) (8,428 ) (2,841 ) Gain on deconsolidation of the subsidiaries, net of tax - - 59,656 (Loss) gain from the discontinued operations, net of tax $ (18,868 ) $ (8,428 ) $ 56,815
Oak Pacific Investment [Member]
DISCONTINUED OPERATIONS [Line Items]
Schedule of calculation of gain (loss) on deconsolidation	On June 30, 2018, the Company calculated a gain regarding such disposition as follows: As of June 30, 2018 Fair value of OPI $ 500,000 Less: Cash and cash equivalents 35,274 Accounts and notes receivable, net 64 Prepaid expenses and other current assets 16,344 Property and equipment, net 12 Amount due from the Company 15,190 Equity method investments 268,515 Equity investments without readily determinable fair values 144,096 Available-for-sale investment 90,615 Other non-current assets 14 Short term loan (14,336 ) Accounts payable (96 ) Accrued expenses and other current liabilities (872 ) Amount due to the Company (102,304 ) Deferred revenue (13 ) Income tax payable (910 ) Long-term liabilities (112,604 ) Other Long-term liabilities (21,430 ) Net assets of OPI 317,559 Less: tax expenses - Gain on deconsolidation of OPI $ 182,441
Cash Flow Statement, Discontinued Operations	The following table summarizes the carrying amounts of the major classes of assets and liabilities recorded as discontinued operations in the consolidated balance sheet as of December 31, 2017. There was no discontinued operations on the balance sheet as of December 31, 2018 as the private placement was completed. As of December 31, 2017 Cash and cash equivalents $ 3,396 Accounts and notes receivable, net 162 Amounts due from related parties 15,036 Prepaid expenses and other current assets 1,957 Current assets classified as discontinued operations $ 20,551 Property and equipment, net 16 Long-term investment 530,624 Other non-current asset 23 Non-current assets classified as discontinued operations $ 530,663 Accounts payable 951 Accrued expenses and other current payables 14,021 Amount due to related parties 10,687 Deferred revenue 56 Income tax payable 925 Long-term debt - current 52,604 Current liabilities classified as discontinued operations $ 79,244 Other non-current liabilities 6,356 Non-current liabilities classified as discontinued operations $ 6,356 The condensed cash flow of OPI were as follows for the years ended December 31, 2016, 2017 and 2018: Years ended December 31, 2016 2017 2018 OPI OPI OPI Net cash provided by (used in) operating activities 52,060 7,532 (28,134 ) Net cash provided by investing activities (53,818 ) (8,450 ) 12 Net cash provided by financing activities - - 60,000
Summary of operating results from discontinued operations included in the Company's consolidated statement of operations	The operating results from discontinued operations included in the Company's consolidated statement of operations were as follows for the years ended December 31, 2016, 2017 and 2018. Years ended December 31, 2016 2017 2018 OPI OPI OPI Major classes of line items constituting pretax profit of discontinued operations Net revenues $ 4,927 $ 5,106 $ 895 Cost of revenues (1,645 ) (3,820 ) (834 ) Selling, research and development, and general and administrative expenses (3,451 ) (3,046 ) (1,394 ) Other income (expense) 4,552 (1,424 ) 371 Interest expense (5,245 ) (5,822 ) (3,142 ) Realized loss on short-term investment (43 ) - - Impairment of long term investment (100,823 ) (113,073 ) (2,180 ) Loss from the operations of the discontinued operations, before income tax (101,728 ) (122,079 ) (6,284 ) Income tax expenses - - - (Loss) Gain of equity method investment (10,343 ) 11,255 (9,674 ) Loss from the operations of the discontinued operations, net of tax (112,071 ) (110,824 ) (15,958 ) Gain on deconsolidation of the subsidiaries, net of tax - - 182,441 (Loss) gain from the discontinued operations, net of tax $ (112,071 ) $ (110,824 ) $ 166,483

BUSINESS ACQUISITION (Tables)

BUSINESS ACQUISITION (Tables)	12 Months Ended
	Dec. 31, 2018
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Shandong Chongqing Wuhan Cash $ - $ 2,727 $ - Goodwill 26,550 11,719 10,405 Noncontrolling interest 7,965 4,334 3,121 The purchase price comprised of: — Cash consideration - 818 - — Contingent consideration 18,585 9,294 7,284 Total $ 18,585 $ 10,112 $ 7,284
Business Acquisition, Pro Forma Information [Table Text Block]	Year ended December 31, 2017 Shandong Chongqing Wuhan Others Net revenues $ 33,263 $ 17,290 $ - $ 71,483 Net gain (loss) $ 1,383 $ 180 $ (10 ) $ (1,652 )
Trucker Path Inc. [Member]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The purchase price consists of the following: US$ Consideration $ 7,616 Fair value of the 29% equity interests: Carrying amount 5,587 Gain on re-measurement of fair value of noncontrolling equity investment (2,903 ) Total $ 10,300 The purchase price was allocated as of December 28, 2017, the date of acquisition as follows: Amortization US$ period Net working capital $ 139 Other current assets 5,016 Intangible assets Customer relationship 610 3 Technology platform 325 Trade name 540 3 Goodwill 7,952 Other current liabilities (4,282 ) Total $ 10,300
Business Acquisition, Pro Forma Information [Table Text Block]	The following pro forma financial information is not necessarily indicative of the results that would have occurred had the acquisition been completed at the beginning of the periods indicated, nor is it indicative of future operating results: For the years ended December 31, 2016 December 31, 2017 Pro forma net revenues $ 63,404 $ 203,391 Pro forma net loss $ (193,704 ) $ (116,397 )
Other used car dealer acquisitions [Member]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Other used car dealer acquisitions Cash $ 1,270 Goodwill 38,317 Noncontrolling interest 11,876 The purchase price comprised of: — Cash consideration 381 — Contingent consideration 27,330 Total $ 27,711
Shanxi [Member]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Shanxi Cash $ - Capital injection receivable 1,360 Inventory 4,604 Goodwill 3,917 Noncontrolling interest 1,175 The purchase price comprised of: — Cash consideration 4,536 — Forgiveness of financing receivable 1,428 — Contingent consideration 2,742 Total $ 8,706
Business Acquisition, Pro Forma Information [Table Text Block]	Year ended December 31, 2018 Net revenues $ 20,135 Net gain $ 752
After-sales service centers [Member]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	After-sales service centers Capital injection receivable $ 651 Inventory 35 Goodwill 16,244 Noncontrolling interest 4,873 The purchase price comprised of: — Cash consideration 686 — Contingent consideration 11,371 Total $ 12,057
Business Acquisition, Pro Forma Information [Table Text Block]	Year ended December 31, 2018 Chongqing/ Suzhou/ Jinan Zhoushuo Net revenues $ 341 Net loss $ (582 )

ACCOUNTS RECEIVABLE (Tables)

ACCOUNTS RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Schedule of accounts receivable	As of December 31, 2017 2018 Accounts receivable $ 8,828 $ 5,219 Allowance of doubtful accounts (2,730 ) (2,635 ) Accounts receivable, net $ 6,098 $ 2,584
Schedule of movement of allowance for doubtful accounts	As of December 31, 2016 2017 2018 Balance at beginning of year $ 2,942 $ 2,640 $ 2,730 Charge to (income) expenses (112 ) 130 52 Exchange difference (190 ) (40 ) (147 ) Balance at end of year $ 2,640 $ 2,730 $ 2,635

FINANCING RECEIVABLE (Tables)

FINANCING RECEIVABLE (Tables)	12 Months Ended
	Dec. 31, 2018
Loans Receivable, Net [Abstract]
Schedule of financing receivable	As of December 31, 2017 2018 Current financing receivable Used car financing $ 129,018 $ 9,846 Financing for installment sales 2,177 1,654 Other financing 1,306 1,243 Net deferred origination costs - - Less allowance for financing receivable (7,023 ) (9,257 ) Current financing receivable, net $ 125,478 $ 3,486 Long-term financing receivable Used car financing $ 8 $ - Financing for installment sales - - Less allowance for long-term financing receivable - - Long-term financing receivable, net $ 8 $ -
Schedule of nonaccrual financing receivable	The following table presents nonaccrual financing receivable as of December 31, 2017 and 2018, respectively. As of December 31, 2017 2018 Used car financing $ 7,373 $ 9,838 Financing for installment sales 2,051 1,654 Other financing 1,286 1,243 $ 10,710 $ 12,735
Schedule of aging of financing receivable	0 – 90 days over 90 days total current total Used car financing $ - $ 9,838 $ 9,838 $ 8 $ 9,846 Financing for installment sales 1,654 1,654 1,654 Other financing - 1,243 1,243 - 1,243 $ - $ 12,735 $ 12,735 $ 8 $ 12,743 0 – 90 days over 90 days total current total Used car financing $ 9,654 $ 7,373 $ 17,027 $ 111,999 $ 129,026 Financing for installment sales 229 1,948 2,177 2,177 Other financing 138 1,168 1,306 - 1,306 $ 10,021 $ 10,489 $ 20,510 $ 111,999 $ 132,509
Schedule of movement of allowance for financing receivable	As of December 31, 2016 2017 2018 Balance at beginning of year $ (3,583 ) $ (15,114 ) $ (7,023 ) Charge to cost of revenues (12,436 ) (12,745 ) (10,802 ) Write off of financing receivable 119 22,178 7,786 Exchange difference 786 (1,342 ) 782 Balance at end of year $ (15,114 ) $ (7,023 ) $ (9,257 )

PREPAID EXPENSES AND OTHER CU_2

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Tables)	12 Months Ended
	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of prepaid expenses and other current assets	As of December 31, Note 2017 2018 Advances to third parties (i) $ 14,325 $ 30,787 Prepaid expenses 3,919 4,144 Deposits 4,294 340 Loan to third parties 2,720 4,029 Funds receivable (ii) 3,880 1,477 Disposal of Mapbar Technology Limited (”Mapbar”) 4,585 - Disposal of online wealth management business 3,482 2,388 Other receivable (iii) 4,209 362 Other current assets 6,812 5,988 Total $ 48,226 $ 49,515 (i) Advances to third parties mainly represents cash advanced to third party dealerships for car purchase. Specifically, some of the advances to third parties relates to consignment sales, in which the Company acts as an agent and assists other third party dealerships in the sale of their cars by allowing them to move their cars to the Company’s own lot. The Company pays those third party dealerships an advance amounting to the value of the car. The Company agrees to market those cars and if successfully sold, receives a commission from those third party dealerships. The Company does not take title to the cars and merely acts as an agent. The advance is subsequently settled either (1) when the car is sold by the Company or (2) if the car is not sold, the cash is remitted back to the Company by the third party dealership. The balance was substantially collected after December 31, 2018 and the commission earned from the above arrangements is immaterial for the years ended December 31, 2017 and 2018. (ii) Funds receivable mainly represents balances paid by individuals for repayments of financing on Renren Fenqi as well as amounts paid by investors for investments made on Renren Licai that are held at a third party electronic payment service provider as of December 31, 2017 and 2018. The balances were collected subsequent to year-end. (iii) Other receivable represents cash advanced to customers of third party dealerships for purchase of cars for which loans were approved by a bank but for which the customers has not yet received the cash. The amount was subsequently collected by the Company after year-end.

LONG-TERM INVESTMENTS (Tables)

LONG-TERM INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2018
Long-term Investments [Abstract]
Schedule of long-term investments	As of December 31, Note 2017 2018 Equity method investments: Plum Inc. (i) $ 7,407 $ 5,581 Fundrise, L.P. (ii) 11,042 11,319 Others (iii) 3,731 2,714 Total equity method investments 22,180 19,614 Equity investments without readily determinable fair values Suzhou Youge Interconnection Venture Capital Center 768 727 Total equity investments without readily determinable fair values 768 727 Equity investment with readily determinable fair values: Hylink Advertising Co., Ltd. (iv) 9,794 - Total equity investment with readily determinable fair values 9,794 - Available-for-sale investment Plum Inc. (i) 2,000 2,000 Total Available-for-sale investment 2,000 2,000 Total long-term investments $ 34,742 $ 22,341 (i) In August 2015, the Company entered into agreements to purchase 2,304,205 Series A Preferred Shares issued by Plum Inc. for a total consideration of $10,500. The Company held 26.64% and 19.64% equity interest of Plum Inc. as of December 31, 2017 and 2018, respectively and recognized its share of loss in Plum Inc. of $1,352, $1,452 and $1,826 for the years ended December 31, 2016, 2017 and 2018, respectively. The Company accounted for this investment as equity method as of December 31, 2017 and 2018 as it believes it is able to exert significant influence through its board seat held by the Company. In January 2017, the Company entered into agreements to purchase convertible promissory note issued by Plum Inc. for a total consideration of $2,000. (ii) In October 2014, the Company entered into an agreement to purchase limited partnership interest of Fundrise, L.P. for a total consideration of $10,000. The Company held 98.04% equity interest as of December 31, 2017 and 2018 and recognized its share of gain of $249, $148 and $276 for the years ended December 31, 2016, 2017 and 2018, respectively. (iii) Others represents other equity method investments with individual carrying amounts less than $1,500 as of December 31, 2017 and 2018, respectively. (iv) In April 2011, the Company acquired 2% equity interest of Hylink Advertising Co., Ltd. at total cash consideration of $2,381. Hylink is mainly engaged in advertising agency service. The Company was not able to exercise significant influence over the operating and financial decisions of Hylink, and thus the Company used the cost method to account for its investment. In August 2017, Hylink successfully listed on the Shanghai Stock Exchange in China. The Company reassessed and classified the investment as available for sales. Unrealized holding gains of $7,489
Summary of financial information of the equity method investments	The summarized financial information for all of the Company’s equity method investments were as follows: As of December 31, 2017 2018 Total current assets $ 6,385 $ 21,015 Total assets $ 26,055 $ 33,181 Total current liabilities $ 1,867 $ 2,584 Total liabilities $ 7,657 $ 11,008 For the years ended December 31, 2016 2017 2018 Net revenues $ 1,217 $ 1,931 $ 3,021 Gross (loss) profits $ (545 ) $ (99 ) $ 616 Loss from continuing operations $ (9,356 ) $ (4,391 ) $ (9,137 ) Net loss $ (9,356 ) $ (4,391 ) $ (9,137 )

PROPERTY AND EQUIPMENT, NET (Ta

PROPERTY AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property and equipment, net	As of December 31, 2017 2018 Building $ 32,002 $ - Computer equipment and application software 17,733 8,309 Furniture and vehicles 295 540 Leasehold improvements 765 1,053 $ 50,795 $ 9,902 Less: Accumulated depreciation $ (21,196 ) $ (8,347 ) Less: Accumulated impairment loss (90 ) - $ 29,509 $ 1,555

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of changes in carrying amounts of goodwill	Amount Balance at January 1, 2017 - Addition in goodwill related to acquisitions $ 99,654 Exchange difference 2,283 Balance at December 31, 2017 101,937 Addition in goodwill related to acquisitions 22,445 Subtraction in goodwill related to disposals (4,741 ) Impairment loss (29,055 ) Exchange difference (6,152 ) Balance at December 31, 2018 $ 84,434

SHORT - TERM DEBT AND LONG-TE_2

SHORT - TERM DEBT AND LONG-TERM DEBT (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Short-term Debt	Short-term debt As of December 31, Note 2017 2018 Bank of Shanghai (i) $ 12,296 $ 21,817 Hengfeng Bank (ii) 49,183 - Bank of Beijing (iii) - 20,798 Others (v) - 7,272 Total $ 61,479 $ 49,887 (i) In May and August 2017, the Company entered into five short-term loan agreements with Bank of Shanghai for $ 12,296 137.9 149.4 In February 2018, the company entered into a loan agreement with Shanghai Bank for $10,181. The loan bears an annual interest rate of 130% over the one-year loan interest rate quoted by the People’s Bank of China and has a loan period of one year. The Company repaid the loan in February 2019. In April and May 2018, the Company entered into two loan agreements with Shanghai Bank for $11,636 in aggregate. Both loans bear an annual interest rate of 140% over the one-year loan interest rate quoted by the People’s Bank of China and have a loan period of one year. $7,272 of the loan was due in April 2019 and were repaid by the Company. (ii) The loan obtained from Hengfeng Bank in 2017 had been repaid by the Company in May 2018. (iii) In March, May and June 2018, the Company entered into four loan agreements with Bank of Beijing for $ 20,798 0.05 1.355 14,544 (v) In January 2018, the Company entered into two loan agreements with a third party individual for a total amounting to $ 6,109 10 In February 2018, the Company entered into a loan agreement with a third party for $787 with an annual interest rate of 9%, which was due in March 2018. The Company repaid the loan in March 2018. In April, May, June, July, August and September 2018, the Company entered into eighteen loan agreements with an individual for $17,787 in aggregate. The loans all bear an annual interest rate of 10.8% and have a period of one month. $17,496 was repaid in May and June 2018, and the remaining balance of $291 was repaid in October 2018. In August 2018, the Company entered into two loan agreements with an individual for $872 in aggregate. The loans both bear an annual interest rate of 10.8% and have a period of two months and four months, respectively. Upon maturity, the Company further renewed the loans for another 12 months with the same interest rate. In October 2018, the Company entered into a loan agreement with the individual for $291. The loan bears an annual interest rate of 10.8
Schedule of Long-term Debt Instruments	Long-term debt As of December 31, Note 2017 2018 Hengfeng Bank (ii) 27,665 - East West Bank (iv) 20,000 35,000 Total $ 47,665 $ 35,000

ACCRUED EXPENSES AND OTHER CU_2

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2018
Payables and Accruals [Abstract]
Schedule of accrued expenses and other payables	As of December 31, 2017 2018 Employee payroll and welfare payables $ 3,182 $ 1,738 Other tax payable 12,650 14,119 Accrued professional, marketing and leasing fees 6,017 6,035 Advance from customers 6,220 4,078 Other payables 3,808 7,085 Total $ 31,877 $ 33,055

PAYABLE TO INVESTORS (Tables)

PAYABLE TO INVESTORS (Tables)	12 Months Ended
	Dec. 31, 2018
Payable To Investors [Abstract]
Schedule of Payable to Investors	Payable to investors includes payable with terms shorter than one year as well as the current portion of the payable to investors. Fixed annual As of December 31, Rate (%) Term 2017 2018 Short-term payable to investors (i) 8.6% - 11.0% 15 $ 142,689 $ 15 (i)

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of current and deferred component of income tax expenses (benefits) which were substantially attributable to the Company's PRC subsidiaries and VIE and VIE's subsidiaries	Years ended December 31, 2016 2017 2018 Current income tax expenses $ 2,470 $ 4,479 $ 9,850 Deferred income tax expenses - - - Total income tax expenses $ 2,470 $ 4,479 $ 9,850
Schedule of principal components of the deferred tax assets and liabilities	As of December 31, 2017 2018 Deferred tax assets Provision for doubtful accounts $ 3,422 $ 7,847 Accrued payroll and welfare 809 390 Accrued liabilities 2,414 3,764 Long term investment impairment 2,328 - Excessive advertising fee 1,990 1,416 Excessive employee education fee 161 80 Goodwill and intangible asset impairment - 7,276 Net operating loss carry forwards 55,745 45,543 Less valuation allowance (66,869 ) (66,316 ) Deferred tax assets, net $ - $ - Deferred tax liabilities $ - $ -
Schedule of reconciliation between the income taxes expense (benefit) computed by applying the PRC tax rate to income (loss) before income taxes and the actual provision for income taxes	Years ended December 31, 2016 2017 2018 Loss before provision of income tax $ (52,804 ) $ (42,757 ) $ (146,504 ) PRC statutory income tax rate 25 % 25 % 25 % Income tax at statutory tax rate (13,201 ) (10,689 ) (36,626 ) Taxable deemed interest income from inter-company interest-free loans 6,925 7,288 6,406 Non-deductible loss and other expenses not deductible for tax purposes 12,422 4,469 30,016 Effect of income tax rate differences in jurisdictions other than the PRC (54 ) 709 10,660 Effect of tax holidays - 570 (53 ) Changes in valuation allowance (3,622 ) 2,132 (553 ) Income tax expenses $ 2,470 $ 4,479 $ 9,850

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Summary of the Company's financial assets and liabilities measured and recorded at fair value on recurring basis	As of December 31, 2018 As of December 31, 2017 Fair Value Measurement at the Reporting Date using Fair Value Measurement at the Reporting Date using Quoted price in active markets for identical assets Level 1 Significant other observable inputs Level 2 Significant unobservable in puts Level 3 Total Quoted price in active markets for identical assets Level 1 Significant other observable inputs Level 2 Significant unobservable in puts Level 3 Total Cash and cash equivalents $ 15,333 $ - $ - $ 15,333 $ 125,199 $ - $ - $ 125,199 Restricted cash 5,818 - - 5,818 47,253 - - 47,253 Non-current Restricted cash 36,362 - - 36,362 26,075 - - 26,075 Long-term investments Convertible debt - - 2,000 2,000 - - 2,000 2,000 Equity investment with readily determinable fair values - - - - - 9,794 - 9,794 Contingent consideration - - (105,670 ) (105,670 ) - - (66,794 ) (66,794 ) Total $ 57,513 $ - $ (103,670 ) $ (46,157 ) $ 198,527 $ 9,794 $ (64,794 ) $ 143,527
Summary of additional information about the reconciliation of the fair value measurements using significant unobservable inputs level 3	For contingent consideration resulting from the acquisitions of the used car dealerships: Planed Offering date September 30, 2018 Discount rate (from acquisition date to Offering date) 15 % Discount rate (from Offering date to the last settlement date) 2.75 % Offering probability as of December 31, 2017 45 % The following is a reconciliation of the beginning and ending balances for contingent consideration measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the year ended December 31, 2017: Amounts Balance at beginning of the period $ 62,493 Fair value change 2,601 Exchange difference 1,700 Balance at December 31, 2017 $ 66,794 The key assumptions used in the valuations of the contingent consideration as of December 31, 2018 are summarized in the table below: (1) For contingent consideration resulting from the acquisition of the used car dealerships: Planed Offering date April 30, 2019 Discount rate (from acquisition date to Offering date) 15 % Discount rate (from Offering date to the last settlement date) 2.75 % Offering probability as of December 31, 2018 80 % (2) For contingent consideration resulting from acquisition of the after sales service centers: Planed Offering date April 30, 2019 Discount rate (from acquisition date to the last settlement date) 15 % Offering probability as of December 31, 2018 80 % The following is a reconciliation of the beginning and ending balances for contingent consideration measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the nine months ended December 31, 2018: Amounts Balance at beginning of the period $ 66,794 Contingent consideration resulting from new acquisitions 14,113 Fair value change 29,604 Exchange difference (4,841 ) Balance at December 31, 2018 $ 105,670 The Company did not transfer any assets or liabilities in or out of level 3 during the years ended December 31, 2017 and 2018.

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation [Abstract]
Schedule of fair value of the options granted, estimated on the date of grant using the option-pricing models with assistance from Marsh, an independent valuation firm, with assumptions used	Year ended December 31, 2016 Using binomial model Risk-free interest rate 2.0 % Volatility 50 % Expected term (in years) 10 Exercise price $ 1.227 Dividend yield -
Summary of information with respect to share options outstanding	Options outstanding Options exercisable Range of exercise prices Number outstanding Weighted average remaining contractual life Weighted average exercise price Weighted average intrinsic value Number of exercisable Weighted average remaining contractual life Weighted average exercise price Weighted average intrinsic value $ 0.01 0.18 139,094,101 5.40 $ 0.06 $ 5,754 117,561,450 5.11 $ 0.06 $ 4,863 139,094,101 $ 5,754 117,561,450 $ 4,863 Options outstanding Options exercisable The exercise prices Number outstanding Weighted average remaining contractual life Weighted average exercise price Number of exercisable Weighted average remaining contractual life Weighted average exercise price $ 0.3 35,281,500 9.19 $ 0.30 13,333,151 9.19 $ 0.30 35,281,500 13,333,151
Summary of the activity of the stock options granted	Weighted Weighted average average Number of exercise grant date shares price fair value Balance, December 31, 2017 141,481,616 $ 0.48 $ 0.64 Exercised (2,268,420 ) $ 0.06 $ 0.66 Forfeited (119,095 ) $ 0.16 $ 0.15 Balance, December 31, 2018 139,094,101 $ 0.06 $ 0.64 Exercisable, December 31, 2018 117,561,450 $ 0.06 Expected to vest, December 31, 2018 21,532,651 $ 0.06 Number of shares Weighted average exercise price Weighted average grant date fair value Balance, December 31, 2017 — $ — $ — Granted 36,461,500 $ 0.30 $ 0.52 Exercised — $ — $ — Forfeited (1,180,000 ) $ 0.30 $ 0.52 Balance, December 31, 2018 35,281,500 $ 0.30 $ 0.52 Exercisable, December 31, 2018 13,333,151 $ 0.30 $ 0.52 Expected to vest, December 31, 2018 21,948,349 $ 0.30 $ 0.52
Summary of the nonvested restricted shares activity	Weighted Weighted average fair number of value nonvested per ordinary restricted share at the shares grant dates Outstanding as of December 31, 2017 10,802,683 $ 0.95 Granted 88,935,342 $ 0.14 Vested (8,404,575 ) $ 0.47 Forfeited (17,561,071 ) $ 0.18 Outstanding as of December 31, 2018 73,772,379 $ 0.21
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]	Year ended December 31, 2018 Risk-free interest rate (1) 2.82 % Volatility (2) 28 55 % Expected term (in years) (3) 10 Exercise price (4) $ 0.3 Dividend yield (5) — Fair value of underlying ordinary share (6) $ 0.75 (1) Risk-free interest rate Risk-free interest rate was estimated based on the yield to maturity of treasury bonds of the United States with a maturity period close to the expected life of the options. (2) Volatility The volatility of the underlying ordinary shares during the life of the options was estimated based on the historical stock price volatility of listed comparable companies over a period comparable to the expected term of the options. (3) Expected term For the options granted to employees, the Company estimated the expected term based on the vesting and contractual terms and employee demographics. For the options granted to non-employees, the Company estimated the expected term as the original contractual term. (4) Exercise price The exercise price of the options was determined by the Company’s board of directors. (5) Dividend yield The dividend yield was estimated by the Company based on its expected dividend policy over the expected term of the options. (6) Fair value of underlying ordinary shares The estimated fair value of the ordinary shares underlying the options as of the valuation date was determined based on a contemporaneous valuation. When estimating the fair value of the ordinary shares on the valuation dates, management has considered a number of factors, including the result of a third party appraisal of the Company, while taking into account standard valuation methods and the achievement of certain events. The fair value of the ordinary shares in connection with the option grants on the valuation date was determined with the assistance of an independent third party appraiser.
Share-based compensation attributable to selling and marketing, research and development and general and administrative expenses and loss from the operations of the discontinued operations	Years ended December 31, 2016 2017 2018 Gross amount: Selling and marketing $ 770 $ 598 $ 1,927 Research and development 1,363 1,092 1,142 General and administrative 21,411 26,326 28,534 Total share-based compensation expense $ 23,544 $ 28,016 $ 31,603

RELATED PARTY BALANCES AND TR_2

RELATED PARTY BALANCES AND TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Schedule of amount due from related parties	As of December 31, 2017 and 2018, amounts due from related parties As of December 31, Note 2017 2018 Oak Pacific Investment (i) $ - $ 93,880 Beijing Infinities (ii) - 60,000 Others 188 829 (i) The balance represents the US$ 90 3.88 8 8.5 (ii) The balance represents the US$ 60 20 40
Schedule of amount due to related parties	As of December 31, 2017 2018 Minority shareholders $ 6,859 $ - Others 200 55 Total $ 7,059 $ 55
Schedule of transactions with related parties for amount due from related parties	Years ended December 31, 2016 2017 2018 Equity investments without readily determinable fair values $ - $ 8,591 $ - Oak Pacific Investment - - 93,880 Beijing Infinities - - 60,000 Total $ - $ 8,591 $ 153,880
Schedule of transactions with related parties for amount due to related parties	Years ended December 31, 2016 2017 2018 Oak Pacific Investment and its subsidiaries $ 10,692 $ - $ 1,834 Others 413 333 5,418 Total $ 11,105 $ 333 $ 7,252

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of segment information	Year ended December 31, 2016 Year ended December 31, 2017 Year ended December 31, 2018 Renren Auto Group Total Renren Auto Group Total Renren Auto Group Total Net revenues $ 18,097 29,384 47,481 21,931 152,693 174,624 19,122 479,076 498,198 Cost of revenues (14,698 ) (25,879 ) (40,577 ) (17,920 ) (145,394 ) (163,314 ) (11,966 ) (464,502 ) (476,468 ) Operating expenses (35,344 ) (25,536 ) (60,880 ) (58,543 ) (30,456 ) (88,999 ) (66,847 ) (68,285 ) (135,132 ) Operating loss (31,945 ) (22,031 ) (53,976 ) (54,532 ) (23,157 ) (77,689 ) (59,691 ) (53,711 ) (113,402 ) Net (loss) income from continuing operations (39,060 ) (24,054 ) (63,114 ) 37,444 (28,695 ) 8,749 (69,285 ) (89,532 ) (158,817 ) Net (loss) income from discontinued operations (122,238 ) - (122,238 ) (119,252 ) - (119,252 ) 223,298 - 223,298 Net (loss) income (161,298 ) (24,054 ) (185,352 ) (81,808 ) (28,695 ) (110,503 ) 154,013 (89,532 ) 64,481

NET (LOSS) INCOME PER SHARE (Ta

NET (LOSS) INCOME PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted net loss per ordinary share	Years ended December 31, 2016 2017 2018 Net loss: (Loss) income from continuing operations $ (63,114 ) $ 8,749 $ (158,817 ) (Loss) income from discontinued operations, net of tax (122,238 ) (119,252 ) 223,298 Net (loss) income (185,352 ) (110, 503) 64,481 Add: net loss attributable to noncontrolling interest - 76 8,059 Net (loss) income attributable to Renren Inc. $ (185,352 ) $ (110,427 ) $ 72,540 Weighted average number of ordinary shares outstanding used in computing net loss per ordinary share-basic 1,022,664,396 1,028,537,406 1,036,421,063 Incremental weighted average ordinary shares from assumed exercise of stock options using the treasury stock method 4,512,567 1,199,533 59,384,854 Weighted average number of ordinary shares outstanding used in computing net income per ordinary share-diluted 1,027,176,963 1,029,736,939 1,095,805,917 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic: (Loss) income per ordinary share from continuing operations $ (0.06 ) $ 0.01 $ (0.15 ) (Loss) income per ordinary share from discontinued operations $ (0.12 ) $ (0.12 ) $ 0.22 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic: $ (0.18 ) $ (0.11 ) $ 0.07 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted: (Loss) income per ordinary share from continuing operations $ (0.06 ) $ 0.01 $ (0.15 ) (Loss) income per ordinary share from discontinued operations $ (0.12 ) $ (0.12 ) $ 0.20 Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted: $ (0.18 ) $ (0.11 ) $ 0.07

COMMITMENTS (Tables)

COMMITMENTS (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum lease payments under non-cancellable operating leases	2019 $ 5,735 2020 4,860 2021 1,840 2022 943 2023 332 2024 and thereafter 987 Total $ 14,697
Schedule of future minimum payments related to long-term debts	2019 - 2020 35,000 Total $ 35,000

OTHER COMPREHENSIVE INCOME (L_2

OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Schedule Of Comprehensive Income (Loss)	Movement of accumulated other comprehensive income (loss) is as follow: Foreign Unrealized currency gain (loss) on translation available-for-sale adjustments investments Total Balance as of December 31, 2015 $ 1,490 $ 35,634 $ 37,124 Exchange difference (10,994 ) (19,247 ) (30,241 ) Balance as of December 31, 2016 $ (9,504 ) $ 16,387 $ 6,883 Exchange difference 9,585 648 10,233 Balance as of December 31, 2017 $ 81 $ 17,035 $ 17,116 Exchange difference (5,770 ) (17,035 ) (22,805 ) Balance as of December 31, 2018 $ (5,689 ) $ - $ (5,689 )

Additional Information - Fina_2

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheets	Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company BALANCE SHEETS (U.S. dollars in thousands, except share data and per share data, or otherwise noted) As of December 31, 2017 2018 ASSETS Current assets: Cash and cash equivalents $ 97,697 $ 749 Prepaid expenses and other current assets 5,179 908 Amounts due from subsidiaries 1,144,420 493,231 Amounts due from related parties - 93,880 Total current assets 1,247,296 588,768 Long-term investments 209,605 417 TOTAL ASSETS $ 1,456,901 $ 589,185 LIABILITIES AND EQUITY Current liabilities: Long-term debt - current 52,604 - Accrued expenses and other current liabilities 15,508 3,583 Amounts due to related party - 27 Total current liabilities 68,112 3,610 Long-term liabilities 20,000 35,000 Other non-current liabilities 6,356 - Deficit of investment in subsidiaries 687,629 403,110 TOTAL LIABILITIES $ 782,097 $ 441,720 Equity: Class A ordinary shares, $0.001 par value, 3,000,000,000 shares authorized, 726,549,453 and 737,222,448 shares issued and outstanding as of December 31, 2017 and 2018, respectively 727 737 Class B ordinary shares, $0.001 par value, 500,000,000 shares authorized, 305,388,450 and 305,388,450 shares issued and outstanding as of December 31, 2017 and 2018, respectively 305 305 Additional paid-in capital 1,303,117 709,137 Accumulated deficit (646,461 ) (557,025 ) Accumulated other comprehensive income 17,116 (5,689 ) Equity 674,804 147,465 TOTAL LIABILITIES AND EQUITY $ 1,456,901 $ 589,185
Condensed Statements of Operations And Comprehensive (Loss) Income	Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME (U.S. dollars in thousands, except share data and per share data, or otherwise noted) Years ended December 31, 2016 2017 2018 Selling and marketing $ 770 $ 598 $ 423 Research and development 1,363 1,092 1,035 General and administrative 25,477 33,519 25,536 Total operating expenses 27,610 35,209 26,994 Other income 307 1,385 924 Interest income 127 223 3,969 Interest expenses (5,728 ) (6,391 ) (3,989 ) (Loss) earnings in equity method investments (3,968 ) 9,743 (1,415 ) Gain on disposal of equity method investments - 58,335 - Gain on disposal of equity investments without readily determinable fair values - 37,311 - Gain on deconsolidation of the subsidiaries - - 182,441 Equity in loss of subsidiaries and variable interest entities (148,480 ) (175,824 ) (82,396 ) Net loss $ (185,352 ) $ (110,427 ) $ 72,540 Other comprehensive (loss) income, net of tax: Foreign currency translation (10,994 ) 9,585 (5,770 ) Net unrealized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively (18,518 ) 3,891 (9,671 ) Non-controlling interest disposition - - 2,519 Transfer to statements of operations of realized gain on available-for-sale securities, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively (729 ) (3,243 ) (7,364 ) Other comprehensive (loss) income $ (30,241 ) $ 10,233 $ (20,286 ) Comprehensive (loss) income $ (215,593 ) $ (100,194 ) $ 52,254
Condensed Statements of Cash Flows	Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company STATEMENTS OF CASH FLOWS (U.S. dollars in thousands, except share data and per share data, or otherwise noted) Years ended December 31, 2016 2017 2018 Cash flows from operating activities: Net (loss) income $ (185,352 ) $ (110,427 ) $ 72,540 Equity in income of subsidiaries and variable interest entities 148,480 175,824 82,396 Share-based compensation expense 23,544 28,016 22,557 Gain on deconsolidation of subsidiaries - - (182,441 ) Gain on disposal of equity investments without readily determinable fair values - (37,311 ) - Exchange loss (gain) on offshore accounts 3 (1 ) 1 Loss (earnings) in equity method investment 3,968 (68,078 ) 1,415 Fair value change of liability-classified warrant (105 ) (195 ) - Changes in operating assets and liabilities: Prepaid expenses and other current assets 107 (294 ) (646 ) Accrued expenses and other current liabilities (1,689 ) 1,902 (11,925 ) Other non-current liabilities 5,332 5,862 (58,960 ) Increase in amounts due from subsidiaries (65,055 ) (27,710 ) 91,089 Net cash (used in) provided by operating activities (70,767 ) (32,412 ) 16,026 Cash flows from investing activities: Restricted cash 15,370 - - Proceeds from principal return on SoFi Loan Note 5,879 - - Proceeds from sale of equity method investment 18,460 91,926 - Proceeds from sale of equity investments without readily determinable fair values - 32,726 4,585 Purchase of equity method investment (1,000 ) (500 ) - Cash disposed of from deconsolidation of subsidiaries - - - Net cash provided by investing activities 38,709 124,152 4,585 Cash flows from financing activities: Proceeds from exercise of share options 1,430 262 1,107 Proceeds from borrowings 130,000 - 27,000 Cash distribution to shareholders related to acquisition of OPI - - (133,665 ) Repayment of borrowings (100,000 ) (10,000 ) (12,000 ) Proceeds from loan from a related party 10,692 - - Net cash provided by (used in) financing activities 42,122 (9,738 ) (117,558 ) Net increase (decrease) in cash and cash equivalents 10,064 82,002 (96,947 ) Cash and cash equivalents at beginning of year 5,633 15,694 97,697 Effect of exchange rate changes (3 ) 1 (1 ) Cash and cash equivalents at end of year $ 15,694 $ 97,697 $ 749

ORGANIZATION AND PRINCIPAL AC_3

ORGANIZATION AND PRINCIPAL ACTIVITIES (Schedule Of Information Related To Entity's Subsidiary, VIEs And VIE's Subsidiaries) (Details)	12 Months Ended
	Dec. 31, 2018
CIAC [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 5, 2005
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Kaixin Auto Group (formerly named as Renren Wealth Inc.) [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 7, 2011
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Link224 Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	May 31, 2011
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Wole Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 27, 2011
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
JiehunChina Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jun. 14, 2011
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren Finance, Inc. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Dec. 15, 2014
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Internet business
Renren Gongying Inc. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 2, 2015
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Game HK [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 8, 2012
Place of incorporation	Hong Kong
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Qianxiang Shiji [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 21, 2005
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Beijing Woxiu [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 27, 2011
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Jiexun Shiji [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Apr. 26, 2012
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Huijin [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 10, 2012
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Joy Interactive (Beijing) Technology Development Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Apr. 24, 2013
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanghai Renren Financial Leasing Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	May 25, 2015
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Financing business
Qianxiang Tiancheng [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 28, 2002
Place of incorporation	PRC
Principal activities	IVAS business
Jingwei Zhihui [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 19, 2014
Place of incorporation	PRC
Principal activities	Internet business
Guangzhou Xiuxuan Brokers Co.,Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Sep. 22, 2014
Place of incorporation	PRC
Principal activities	IVAS business
Shanghai Wangjing Investment Management Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Apr. 20, 2015
Place of incorporation	PRC
Principal activities	Internet business
Qianxiang Wangjing [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Nov. 11, 2008
Place of incorporation	PRC
Principal activities	Internet business
Shanghai Changda [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 25, 2010
Place of incorporation	PRC
Principal activities	Internet business
Wole Shijie [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 27, 2011
Place of incorporation	PRC
Principal activities	Technology development and service
Beijing Kirin Wings Technology Development Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jan. 16, 2013
Place of incorporation	PRC
Principal activities	Internet business
Shanghai Wangjing Commercial Factoring Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 28, 2015
Place of incorporation	PRC
Principal activities	Factoring business
Renren CRSP Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren PLML Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren KURY Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren ONER Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren BLCR Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren ZHCH Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 14, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren LSTAR Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 17, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren CHRYPH Holdings Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 31, 2016
Place of incorporation	Cayman Islands
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren Winday Company Limited [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 26, 2016
Place of incorporation	Hong Kong
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Renren Giantly Limited [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 16, 2016
Place of incorporation	Hong Kong
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren Gentle Height Company Limited [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Dec. 7, 2016
Place of incorporation	Hong Kong
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Chime Technologies, Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Sep. 7, 2012
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	SaaS business
Fenqi Winday Company Limited [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Feb. 29, 2016
Place of incorporation	Hong Kong
Principal activities	Internet business
Shanghai Mumian Interactive Internet Information Service Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jun. 16, 2016
Place of incorporation	PRC
Principal activities	IVAS business
Guangzhou Qunge Information Technology Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 26, 2016
Place of incorporation	PRC
Principal activities	IVAS business
Jet Sound Hong Kong Company Limited [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	May 7, 2011
Place of incorporation	Hong Kong
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren U.S. Holdco, Inc. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 31, 2017
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Sindeo Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 3, 2017
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Inactive company
Geographic Farming LLC [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 24, 2017
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	SaaS business
Trucker Path Inc. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Dec. 28, 2017
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Internet business
Shanghai Renren Automobile Technology Co., Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 18, 2017
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Renren Zhenhan Technology Development Beijing Co., Ltd. [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Nov. 13, 2017
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanghai Jieying Automobile Sales Co., Ltd [Member]
Investment Holdings [Line Items]
Place of incorporation	PRC
Principal activities	Automobile business
Shanghai Heiguo Internet Information Technology Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Feb. 27, 2017
Place of incorporation	PRC
Principal activities	Investment holding
Renren Zhencai Technology Development Beijing Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Dec. 15, 2017
Place of incorporation	PRC
Principal activities	Investment holding
Jieying Baolufeng Automobile Sales Shenyang Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jun. 14, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Chongqing Jieying Shangyue Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 3, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Jiangsu Jieying Ruineng Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	May 16, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Dalian Yiche Jieying Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jun. 27, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Henan Jieying Hengxin Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jun. 29, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Shandong Jieying Huaqi Automobile Service Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 20, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Neimenggu Jieying Kaihang Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 14, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Hangzhou Jieying Yifeng Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 1, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Jilin Jieying Taocheguan Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 31, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Suzhou Jieying Chemaishi Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 27, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Cangzhou Jieying Bole Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Aug. 10, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Shanghai Jieying Diyi Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Oct. 19, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Ningxia Jieying Xianzhi Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jul. 26, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Wuhan Jieying Chimei Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Nov. 20, 2017
Place of incorporation	PRC
Principal activities	Automobile business
Lucrativ Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jan. 22, 2018
Place of incorporation	USA
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	SaaS business
Renren Giantly Philippines Inc [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 31, 2018
Place of incorporation	Philippines
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	SaaS business
Shanghai Zhoushuo Automobile Technology Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jan. 18, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Jinan Zhoushuo Yidong Automobile Commerce Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jan. 17, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	70.00%
Principal activities	Automobile business
Suzhou Zhoushuo Lujie Automobile Service Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Feb. 7, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	70.00%
Principal activities	Automobile business
Shanghai Lingcong Internet Information Technology Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Jan. 18, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanghai Jiexun Automobile Sales Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Feb. 2, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanghai Lingding Automobile Technology Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Apr. 12, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanghai DingranInformation Technology Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Apr. 12, 2018
Place of incorporation	PRC
Percentage of legal ownership by Renren Inc	100.00%
Principal activities	Investment holding
Shanxi Jieying Weilan Automobile Salesand Service Co Ltd [Member]
Investment Holdings [Line Items]
Later of date of incorporation or acquisition	Mar. 13, 2018
Place of incorporation	PRC
Principal activities	Automobile business

ORGANIZATION AND PRINCIPAL AC_4

ORGANIZATION AND PRINCIPAL ACTIVITIES (Narrative) (Details) ¥ in Millions, $ in Millions	1 Months Ended			12 Months Ended
	Apr. 30, 2019USD ($)	Sep. 30, 2016USD ($)	Jan. 31, 2016USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016CNY (¥)	Jan. 31, 2016CNY (¥)
VIE arrangements [Line Items]
Asset-Backed Securities, at Carrying Value		$ 78.5	$ 46.1				¥ 510.6	¥ 299.8
Financing Arrangements Expiration Date				May 2018
Subsequent Event [Member] | Kaixin [Member]
VIE arrangements [Line Items]
Proceeds from Issuance or Sale of Equity	$ 28.3
Subsequent Event [Member] | CM Seven Star Acquisition Corporation [Member]
VIE arrangements [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Consideration Transferred	$ 28.3
AAA-rated senior securities [Member]
VIE arrangements [Line Items]
Percentage of Tranches		70.50%	68.00%
AA-rated senior securities [Member]
VIE arrangements [Line Items]
Percentage of Tranches		11.00%	10.50%
Subordinate Security Held By Originator [Member]
VIE arrangements [Line Items]
Percentage of Tranches		18.50%	21.50%
Variable Interest Entity [Member]
VIE arrangements [Line Items]
Percentage of VIEs revenues to the consolidated net revenues				97.60%	88.10%	97.00%
Percentage of VIEs assets to the consolidated total assets				55.70%	24.20%
Percentage of VIEs liability to the consolidated total liabilities				66.30%	31.10%
Variable Interest Entity [Member] | Power of Attorney [Member]
VIE arrangements [Line Items]
Term of agreement				10 years
Variable Interest Entity [Member] | Business Operations Agreement [Member]
VIE arrangements [Line Items]
Advance written notice period for not extending term of agreement				30 days
Variable Interest Entity [Member] | Exclusive Equity Option Agreement [Member]
VIE arrangements [Line Items]
Advance written notice period for not extending term of agreement				30 days

ORGANIZATION AND PRINCIPAL AC_5

ORGANIZATION AND PRINCIPAL ACTIVITIES (Schedule Of Consolidated Financial Information) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2006
Consolidated financial information [Line Items]
Cash and cash equivalents		$ 15,333	$ 125,199
Restricted cash		5,818	47,253
Accounts receivable, net		2,584	6,098
Financing receivable, net	[1]	3,486	125,478
Inventory		59,197	95,012
Prepaid expenses and other current assets		49,515	48,226
Amounts due from related parties		20,829	188
Assets of discontinued operations - current		0	20,551
Total current assets		156,762	468,005
Property and equipment, net		1,555	29,509
Long-term investments		22,341	34,742
Goodwill		84,434	101,937	$ 0
Amounts due from a related party-non-current		133,880	0
Restricted cash – non-current		36,362	26,075
Other non-current assets		767	958
Assets of discontinued operations – non-current		0	530,670
Total assets		437,193	1,194,164
Accounts payable		8,255	19,095
Short-term debt		49,887	61,479
Accrued expenses and other current liabilities		33,055	31,877
Payable to investors		15	142,689
Amounts due to related parties		55	7,059
Deferred revenue		3,716	11,433
Contingent consideration		11,929	5,944
Income tax payable		20,602	11,727
Current liabilities of discontinued operations		0	79,244
Total current liabilities		127,514	370,547
Long-term contingent consideration		93,741	60,850
Total non-current liabilities		128,741	114,871
Total liabilities		256,255	485,418
Net revenues		498,198	174,624	47,481	$ 47,481
Net loss		72,540	(110,427)	(185,352)
Loss from continuing operations		(158,817)	8,749	(63,114)
Loss from discontinued operations		223,298	(119,252)	(122,238)
Net cash provided by operating activities		(60,239)	(114,964)	(11,005)
Net cash provided by investing activities		170,844	263,285	(183,653)
Net cash provided by financing activities		(254,179)	(67,113)	126,075
VIEs and their subsidiaries [Member]
Consolidated financial information [Line Items]
Cash and cash equivalents		9,363	5,198
Restricted cash		0	51
Accounts receivable, net		2,215	1,423
Financing receivable, net		0	145
Inventory		57,859	95,012
Prepaid expenses and other current assets		46,247	35,686
Amounts due from related parties		20,008	865
Assets of discontinued operations - current		0	15,646
Total current assets		135,692	154,026
Property and equipment, net		489	491
Long-term investments		1,900	11,901
Goodwill		64,364	89,274
Amounts due from a related party-non-current		40,000	0
Restricted cash – non-current		363	345
Other non-current assets		747	468
Assets of discontinued operations – non-current		0	32,116
Total non-current assets		107,863	134,595
Total assets		243,555	288,621
Accounts payable		6,849	18,525
Short-term debt		29,816	12,296
Accrued expenses and other current liabilities		19,135	15,644
Payable to investors		15	7,153
Amounts due to related parties		28	7,013
Deferred revenue		3,099	10,108
Contingent consideration		11,929	5,944
Income tax payable		10,920	9,455
Current liabilities of discontinued operations		0	3,786
Total current liabilities		81,791	89,924
Long-term contingent consideration		88,098	60,850
Total non-current liabilities		88,098	60,850
Total liabilities		169,889	150,774
Net revenues		486,388	153,759	46,040
Loss from continuing operations		(82,304)	(19,250)	(13,035)
Loss from discontinued operations		(5,220)	(22,995)	(18,133)
Net cash provided by operating activities		(14,403)	(146,911)	68,374
Net cash provided by investing activities		(11,441)	22,943	(187,621)
Net cash provided by financing activities		27,018	37,208	148,080
Consolidated Assets Backed Financing Entities [Member]
Consolidated financial information [Line Items]
Financing receivable, net		0	78,485
Total assets		0	78,485
Accrued expenses and other current liabilities		0	4
Payable to investors		0	64,087
Total liabilities		0	64,091
Net revenues		0	0	0
Net loss		36	91	375
Net cash provided by operating activities		0	0	0
Net cash provided by investing activities		0	0	0
Net cash provided by financing activities		$ 0	$ 0	$ 0
[1]	The Company consolidated Shanghai Renren Finance Leasing Asset-Backed Special Plans (the "Plans"), see Note 1.

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule Of Estimated Useful Lives Of Property And Equipment) (Details)	12 Months Ended
	Dec. 31, 2018
Building [Member]
Property and equipment, net [Line Items]
Estimated useful lives	46 years
Furniture and vehicles [Member]
Property and equipment, net [Line Items]
Estimated useful lives	5 years
Computer equipment and application software [Member] | Minimum [Member]
Property and equipment, net [Line Items]
Estimated useful lives	2 years
Computer equipment and application software [Member] | Maximum [Member]
Property and equipment, net [Line Items]
Estimated useful lives	3 years

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Disaggregation Of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2006
Revenues	$ 498,198	$ 174,624	$ 47,481	$ 47,481
Automobile sales	467,232	121,084	0
IVAS and others	28,510	24,271	18,164
Financing income	2,456	29,269	29,317
Total net revenues	498,198	174,624	47,481	47,481
Renren [Member]
Revenues	19,122	21,931		18,097
IVAS and others	18,983	21,931	18,096
Financing income	139		1
Total net revenues	19,122	21,931		18,097
Auto Group [Member]
Revenues	479,076	152,693	29,384	29,384
Total net revenues	$ 479,076	$ 152,693	$ 29,384	$ 29,384

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Intangible Assets With Indefinite Lives, Impairment Of Long-Lived Assets And Intangible Assets With Definite Lives, Business Taxes, Value Added Taxes, Income Taxes) (Narrative) (Details) - USD ($)	1 Months Ended				3 Months Ended	12 Months Ended
	Apr. 29, 2019	Jan. 31, 2019	Jan. 28, 2019	Jan. 31, 2018	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2006	Jan. 31, 2020	May 06, 2019	Apr. 30, 2019	Apr. 12, 2019	Mar. 31, 2019	Jan. 01, 2019	Oct. 31, 2018	Aug. 31, 2018	Aug. 31, 2017	Dec. 31, 2015
Intangible assets with indefinite lives
Impairment loss of indefinite-lived intangible assets							$ 0	$ 0
Goodwill
Goodwill, Impairment Loss						$ 29,055,000	0	0
Cost of revenues
Provision for Loan and Lease Losses						10,802,000	12,745,000	12,436,000
Business taxes
Business taxes deducted in arriving net revenue						0	0	77,000
Value added taxes
Amount of VAT reported as a deduction to revenue						15,796,000	9,777,000	4,080,000
Income taxes
Income tax due to uncertain tax position and interest and penalties related to potential underpaid income tax expenses						0	0	0
Revenues						498,198,000	174,624,000	47,481,000	$ 47,481,000
Revenue from Contract with Customer, Including Assessed Tax						467,232,000	121,084,000	0
Restricted Cash, Noncurrent						36,362,000	26,075,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						180,938,000	708,746,000	738,466,000											$ 929,388,000
Retained Earnings (Accumulated Deficit)						(563,737,000)	(653,173,000)
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest						(158,817,000)	8,749,000	(63,114,000)
Net cash provided by (used in) operating activities						(60,239,000)	(114,964,000)	(11,005,000)
Debt Instrument, Face Amount				$ 6,109,000	$ 17,787,000											$ 291,000	$ 872,000	$ 12,296,000
Increase Decrease In Restricted Cash For Investing Activities							39,049,000	9,630,000
Proceeds from (Repayments of) Restricted Cash, Financing Activities							0
Debt Instrument, Interest Rate, Stated Percentage														8.50%
Inventory Write-down						5,712,000	0	0
Impairment of Intangible Assets, Finite-lived						675	0	0
Revenue From Internet Value Added Service And Other						28,510,000	24,271,000	18,164,000
Investment Income, Interest						2,456,000	29,269,000	29,317,000
Accounts Receivable, Net, Current						2,584,000	6,098,000
Deferred Revenue, Current						3,716,000	11,433,000
Deferred Revenue, Revenue Recognized						11,245,000
Cumulative Effect on Retained Earnings, Net of Tax				$ 7,363
Shandong Jieying Huaqi Automobile Service Co Ltd [Member]
Income taxes
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																	30.00%
Renren [Member]
Income taxes
Revenues						19,122,000	21,931,000		$ 18,097,000
Revenue From Internet Value Added Service And Other						18,983,000	21,931,000	18,096,000
Investment Income, Interest						$ 139,000		1,000
Maximum [Member]
Income taxes
Equity Method Investment, Ownership Percentage						50.00%
Minimum [Member]
Income taxes
Equity Method Investment, Ownership Percentage						20.00%
Jieying Huaqi Auto Service Co [Member]
Income taxes
Inventory Write-down					$ 5,700,000
East West Bank [Member]
Income taxes
Debt Instrument, Face Amount												$ 7,300,000
Debt Instrument, Interest Rate, Stated Percentage												5.22%
Subsequent Event [Member]
Income taxes
Proceeds from Divestiture of Businesses		$ 3,000,000
Line of Credit Facility, Remaining Borrowing Capacity													$ 1,500,000
Subsequent Event [Member] | East West Bank [Member]
Income taxes
Line of Credit Facility, Remaining Borrowing Capacity													$ 5,800,000
Subsequent Event [Member] | Five Eight Dot Com [Member]
Income taxes
Debt Instrument, Face Amount												$ 1,000,000
Subsequent Event [Member] | Renren social networking service [Member]
Income taxes
Business Combination, Contingent Consideration, Asset, Current											$ 17,000,000
Private Placement [Member] | Subsequent Event [Member]
Income taxes
Sale of Stock, Number of Shares Issued in Transaction		750,000
Sale of Stock, Price Per Share		$ 10
Sale of Stock, Consideration Received on Transaction		$ 7,500,000
Financial Service, Other [Member]
Income taxes
Revenue from Contract with Customer, Including Assessed Tax						$ 2,297,000	25,399,000	17,854,000
Scenario, Forecast [Member]
Income taxes
Debt Instrument, Face Amount															$ 23,000,000
CM Seven Star [Member]
Income taxes
Stock Redeemed or Called During Period, Shares	0
Payments for (Proceeds from) Investments	$ 0
Proceeds from Notes Payable	$ 0
Convertible Debt [Member] | CM Seven Star [Member]
Income taxes
Debt Instrument, Face Amount															$ 60,239,000,000
Convertible Debt [Member] | CM Seven Star [Member] | Scenario, Forecast [Member]
Income taxes
Proceeds from Convertible Debt			$ 20,000,000
Debt Instrument, Unused Borrowing Capacity, Amount										$ 3,000,000
Other Noncurrent Assets [Member]
Income taxes
Restricted Cash, Noncurrent						36,362,000	$ 26,075,000
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Member] | Adjustments for New Accounting Pronouncement [Member]
Income taxes
Proceeds from (Repayments of) Restricted Cash, Financing Activities								$ 100,000,000
Online Advertising Services [Member]
Income taxes
Revenues						$ 0

SIGNIFICANT RISKS AND UNCERTA_2

SIGNIFICANT RISKS AND UNCERTAINTIES (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Foreign currency risk
Cash and cash equivalents denominated in RMB	$ 11,118	$ 20,143
Sales Revenue, Net [Member]
Foreign currency risk
Concentration Risk, Percentage	10.00%	10.00%	10.00%
Accounts Receivable [Member]
Foreign currency risk
Concentration Risk, Percentage	10.00%	10.00%

DISCONTINUED OPERATIONS (Schedu

DISCONTINUED OPERATIONS (Schedule Of Calculation Of Gain (Loss) On Consolidation) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Nov. 19, 2015	Mar. 31, 2016	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Calculation of gain on deconsolidation
Accounts and notes receivable, net					$ 162
Less: Cash and cash equivalents					3,396
Prepaid expenses and other current assets					1,957
Property and equipment, net					16
Other non-current assets					23
Amount due to the Company				$ 0	0	$ 7,500
Income tax payable					(925)
Other Long-term liabilities					(6,356)
Gain on deconsolidation of OPI				242,097	0	8,310
Online Gaming [Member]
Calculation of gain on deconsolidation
The proceeds		$ 17,500
Less: The repayment of intercompany loans provided by the Company	$ 7,500	7,500
Net consideration		10,000
Less: Cash and cash equivalents		15,982
Prepaid expenses and other current assets		2,737
Property and equipment, net		194
Intangible assets, net		263
Other non-current assets		1,508
Accounts payable		(1,209)
Accrued expenses and other current liabilities		(7,062)
Amount due to the Company		(7,500)
Deferred revenue		(3,677)
Net assets		1,236
Less: tax expenses		454
Gain on deconsolidation of OPI		$ 8,310
Renren SNS [Member]
Calculation of gain on deconsolidation
The proceeds				60,000
Property and equipment, net				8
Net assets				8
Net assets of OPI				336
Less: tax expenses				0
Gain on deconsolidation of OPI				59,656	0	0
Oak Pacific Investment [Member]
Calculation of gain on deconsolidation
The proceeds			$ 500,000
Accounts and notes receivable, net			64
Less: Cash and cash equivalents			35,274
Prepaid expenses and other current assets			16,344
Property and equipment, net			12
Amount due from the Company			15,190
Equity method investments			268,515
Equity investments without readily determinable fair values			144,096
Available-for-sale investment			90,615
Other non-current assets			14
Short term loan			(14,336)
Accounts payable			(96)
Accrued expenses and other current liabilities			(872)
Amount due to the Company			(102,304)
Deferred revenue			(13)
Income tax payable			(910)
Long-term liabilities			(112,604)
Other Long-term liabilities			(21,430)
Net assets			317,559
Less: tax expenses			0
Gain on deconsolidation of OPI			$ 182,441	$ 182,441	$ 0	$ 0

DISCONTINUED OPERATIONS (Detail

DISCONTINUED OPERATIONS (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2006
Major classes of line items constituting pretax profit (loss) of discontinued operations
Net revenues		$ 498,198,000	$ 174,624,000	$ 47,481,000	$ 47,481,000
Cost of revenues		(449,805,000)	(116,385,000)	0
Impairment of intangible assets		675,000	0	0
Other income and expenses that are not major		(2,014,000)	2,656,000	8,336,000
Interest expenses		(5,103,000)	(4,322,000)	(7,107,000)
Realized gain (loss) on short-term investment		0	(100,000)	595,000
Impairment of long term investment		0	0	(1,484,000)
Income tax expenses		0	0	(102,000)
Income from the operations of the discontinued operations, net of tax		(18,799,000)	(119,252,000)	(130,548,000)
Loss from the operations of the discontinued operations, net of tax		223,298,000	(119,252,000)	(122,238,000)
Gain on deconsolidation of the subsidiaries, net of tax		242,097,000	0	8,310,000
Renren Games [Member]
Major classes of line items constituting pretax profit (loss) of discontinued operations
Net revenues				1,699,000
Cost of revenues				(871,000)
Selling, research and development, and general and administrative expenses				(485,000)
Impairment of intangible assets				0
Other income and expenses that are not major				150,000
Income from the operations of the discontinued operations, before income tax				493,000
Income tax expenses				(102,000)
Income from the operations of the discontinued operations, net of tax				391,000
Gain on deconsolidation of the subsidiaries, net of tax				8,310,000
Gain on disposal of equity method investment, net of tax				0
Gain from the discontinued operations, net of tax				8,701,000
Renren SNS [Member]
Major classes of line items constituting pretax profit (loss) of discontinued operations
Net revenues		19,679,000	22,372,000	10,956,000
Cost of revenues		(14,997,000)	(17,264,000)	(9,545,000)
Selling, research and development, and general and administrative expenses		(7,523,000)	(13,536,000)	(20,279,000)
Income from the operations of the discontinued operations, before income tax		(2,841,000)	(8,428,000)	(18,868,000)
Income tax expenses		0	0	0
Income from the operations of the discontinued operations, net of tax		(2,841,000)	(8,428,000)	(18,868,000)
Gain on deconsolidation of the subsidiaries, net of tax		59,656,000	0	0
Gain from the discontinued operations, net of tax		56,815,000	(8,428,000)	(18,868,000)
Oak Pacific Investment [Member]
Major classes of line items constituting pretax profit (loss) of discontinued operations
Net revenues		895,000	5,106,000	4,927,000
Cost of revenues		(834,000)	(3,820,000)	(1,645,000)
Selling, research and development, and general and administrative expenses		(1,394,000)	(3,046,000)	(3,451,000)
Other income and expenses that are not major		371,000	(1,424,000)	4,552,000
Interest expenses		(3,142,000)	(5,822,000)	(5,245,000)
Realized gain (loss) on short-term investment		0	0	(43,000)
Impairment of long term investment		(2,180,000)	(113,073,000)	(100,823,000)
Income from the operations of the discontinued operations, before income tax		(6,284,000)	(122,079,000)	(101,728,000)
Income tax expenses		0	0	0
Income from the operations of the discontinued operations, net of tax		(9,674,000)	11,255,000	(10,343,000)
Loss from the operations of the discontinued operations, net of tax		(15,958)	(110,824)	(112,071)
Gain on deconsolidation of the subsidiaries, net of tax	$ 182,441,000	182,441,000	0	0
Gain from the discontinued operations, net of tax		$ 166,483,000	$ (110,824,000)	$ (112,071,000)

DISCONTINUED OPERATIONS (Sche_2

DISCONTINUED OPERATIONS (Schedule of Condensed cash flow) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Online Gaming [Member]
Net cash (used in) provided by operating activities			$ 11,171
Net cash (used in) provided by investing activities			25
Renren SNS [Member]
Net cash (used in) provided by operating activities	$ (1,437)	$ (8,144)	(22,589)
Oak Pacific Investment [Member]
Net cash (used in) provided by operating activities	(28,134)	7,532	52,060
Net cash (used in) provided by investing activities	12	(8,450)	(53,818)
Net cash provided by financing activities	$ 60,000	$ 0	$ 0

DISCONTINUED OPERATIONS (Narrat

DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 14, 2018	Jan. 31, 2019	Jun. 21, 2018	Nov. 19, 2015	Mar. 31, 2016	Dec. 31, 2018
DECONSOLIDATION OF SUBSIDIARIES [Line Items]
Stock Issued During Period, Shares, New Issues			816,261,781
Payments of Dividends			$ 133,700
Dividends Payable, Amount Per Share			$ 0.6125
Online Gaming [Member]
DECONSOLIDATION OF SUBSIDIARIES [Line Items]
Disposal of business gross amount				$ 17,500
Proceeds from Collection of Advance to Affiliate				$ 7,500	$ 7,500
Beijing Infinities Interactive Media Co Ltd [Member]
DECONSOLIDATION OF SUBSIDIARIES [Line Items]
Business Combination, Consideration Transferred	$ 20,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 40,000
Renren SNS [Member]
DECONSOLIDATION OF SUBSIDIARIES [Line Items]
Disposal Group Including Discontinued Operation Related Party						$ 20,000
Proceeds From Related Party Discontinued Operation		$ 3,000				$ 0

BUSINESS ACQUISITION (Schedule

BUSINESS ACQUISITION (Schedule Of Significant Acquisitions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 28, 2017	Oct. 27, 2017	Jul. 20, 2017	Jul. 03, 2017	Dec. 31, 2016
Capital injection receivable			$ 5,016
Inventory				$ 8,786	$ 3,721	$ 2,791
Goodwill	$ 84,434	$ 101,937					$ 0
— Contingent consideration	14,113	66,794
Shandong [Member]
Cash		0
Goodwill		26,550
Noncontrolling interest		7,965
— Cash consideration		0
— Contingent consideration		18,585
Total		18,585
Chongqing [Member]
Cash		2,727
Goodwill		11,719
Noncontrolling interest		4,334
— Cash consideration		818
— Contingent consideration		9,294
Total		10,112
Wuhan [Member]
Cash		0
Goodwill		10,405
Noncontrolling interest		3,121
— Cash consideration		0
— Contingent consideration		7,284
Total		7,284
Other used car dealer acquisitions [Member]
Cash		1,270
Goodwill		38,317
Noncontrolling interest		11,876
— Cash consideration		381
— Contingent consideration		27,330
Total		$ 27,711
Shanxi [Member]
Cash	0
Capital injection receivable	1,360
Inventory	4,604
Goodwill	3,917
Noncontrolling interest	1,175
— Cash consideration	4,536
Forgiveness of financing receivable	1,428
— Contingent consideration	2,742
Total	8,706
After-sales service centers [Member]
Capital injection receivable	651
Inventory	35
Goodwill	16,244
Noncontrolling interest	4,873
— Cash consideration	686
— Contingent consideration	11,371
Total	$ 12,057

BUSINESS ACQUISITION (Schedul_2

BUSINESS ACQUISITION (Schedule Of Consolidated Statement Of Operations Acquisition) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Shandong [Member]
Net revenues		$ 33,263
Net gain (loss)		1,383
Chongqing [Member]
Net revenues		17,290
Net gain (loss)		180
Wuhan [Member]
Net revenues		0
Net gain (loss)		(10)
Other used car dealer acquisitions [Member]
Net revenues		71,483
Net gain (loss)		$ (1,652)
Shanxi [Member]
Net revenues	$ 20,135
Net gain (loss)	752
Chongqing/ Suzhou/ Jinan Zhoushuo [Member]
Net revenues	341
Net gain (loss)	$ (582)

BUSINESS ACQUISITION (Schedul_3

BUSINESS ACQUISITION (Schedule Purchase Price) (Details) - Trucker Path Inc. [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Consideration	$ 7,616
Fair value of the 29% equity interests:
Carrying amount	5,587
Gain on re-measurement of fair value of noncontrolling equity investment	(2,903)
Total	$ 10,300

BUSINESS ACQUISITION (Schedul_4

BUSINESS ACQUISITION (Schedule of Purchase Price Acquisition) (Details) $ in Thousands	Dec. 28, 2017USD ($)
Net working capital	$ 139
Other current assets	5,016
Goodwill	7,952
Other current liabilities	(4,282)
Total	10,300
Customer relationship
Goodwill	$ 610
Finite-Lived Intangible Asset, Useful Life	3 years
Technology platform
Goodwill	$ 325
Trade name
Goodwill	$ 540
Finite-Lived Intangible Asset, Useful Life	3 years

BUSINESS ACQUISITION (Schedul_5

BUSINESS ACQUISITION (Schedule of pro forma financial information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Combinations [Abstract]
Pro forma net revenues	$ 203,391	$ 63,404
Pro forma net loss	$ (116,397)	$ (193,704)

BUSINESS ACQUISITION (Narrative

BUSINESS ACQUISITION (Narrative) (Details) $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Dec. 19, 2014USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 06, 2018USD ($)	Oct. 27, 2017USD ($)	Jul. 20, 2017USD ($)	Jul. 03, 2017USD ($)
Number of Businesses Acquired		14
Business Combination, Contingent Consideration, Liability		$ 66,794	$ 14,113	$ 66,794
Goodwill		101,937	84,434	101,937	$ 0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory							$ 8,786	$ 3,721	$ 2,791
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			29,604	2,601	$ 0
Equity Method Investments		$ 22,180	19,614	22,180
Shandong [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net								$ 18,585
Chongqing [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net									$ 10,112
Equity Method Investment, Realized Gain (Loss) on Disposal			1,200
Equity Method Investments						$ 4,700
Wuhan [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net							$ 7,284
Trucker Path Inc. [Member]
Payments to Acquire Businesses, Gross	$ 11,500			7,616
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain				$ 2,903
Equity Method Investment, Ownership Percentage		100.00%		100.00%
Business Acquisition, Percentage of Voting Interests Acquired	29.00%	71.00%		71.00%
Sindeo Inc [Member]
Goodwill		$ 3,251		$ 3,251
Geographic Farming LLC [Member]
Payments to Acquire Businesses, Gross				4,326
Goodwill		$ 1,460		$ 1,460
Business Acquisition, Percentage of Voting Interests Acquired		100.00%		100.00%
Cash Injection Dealerships [Member]
Business Acquisition Consideration, Cash Injected		$ 17,580
Payments to Acquire Businesses, Gross		7,240
Used Car Dealers [Member]
Payments to Acquire Businesses, Gross			14,884
Business Combination, Consideration Transferred		45,920
Financing Receivable Forgiven			$ 21,201
New Entity [Member]
Business Acquisition, Percentage of Voting Interests Acquired			70.00%
Car Inventories Each Dealership [Member]
Business Combination, Consideration Transferred		30,622
Shandong, Chongqing and Wuhan [Member]
Financing Receivable Forgiven		$ 6,995		$ 14,206
Other Payments to Acquire Businesses				2,951
Other Acquisition [Member]
Payments to Acquire Businesses, Gross				$ 11,933
Shanxi [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			$ 29,604

ACCOUNTS RECEIVABLE (Schedule O

ACCOUNTS RECEIVABLE (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts receivable	$ 5,219	$ 8,828
Allowance of doubtful accounts	(2,635)	(2,730)
Accounts receivable, net	$ 2,584	$ 6,098

ACCOUNTS RECEIVABLE (Schedule_2

ACCOUNTS RECEIVABLE (Schedule Of Movement Of Allowance For Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement of allowance for doubtful accounts
Balance at beginning of year	$ 2,730	$ 2,640	$ 2,942
Charge to (income) expenses	52	130	(112)
Exchange difference	(147)	(40)	(190)
Balance at end of year	$ 2,635	$ 2,730	$ 2,640

FINANCING RECEIVABLE (Schedule

FINANCING RECEIVABLE (Schedule of Loans Receivable) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current financing receivable
Used car financing	$ 9,846	$ 129,018
Other financing	1,243	1,306
Net deferred origination costs	0	0
Financing for installment sales	1,654	2,177
Less allowance for financing receivable	(9,257)	(7,023)
Current financing receivable, net	3,486	125,478
Long-term financing receivable
Used car financing	0	8
Financing for installment sales	0	0
Less allowance for long-term financing receivable	0	(78,485)
Long-term financing receivable, net	$ 0	$ 8

FINANCING RECEIVABLE (Schedul_2

FINANCING RECEIVABLE (Schedule of Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Used car financing	$ 9,838	$ 7,373
Financing for installment sales	1,654	2,051
Other financing	1,243	1,286
Financing receivable, net	$ 12,735	$ 10,710

FINANCING RECEIVABLE (Schedul_3

FINANCING RECEIVABLE (Schedule of Aging of loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Used car financing	$ 9,846	$ 129,026
Financing for installment sales	1,654	2,177
Other financing	1,243	1,306
Financing receivable	12,743	132,509
0-90 days aging [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Used car financing	0	9,654
Financing for installment sales		229
Other financing	0	138
Financing receivable	0	10,021
Over 90 days aging [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Used car financing	9,838	7,373
Financing for installment sales	1,654	1,948
Other financing	1,243	1,168
Financing receivable	12,735	10,489
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Used car financing	9,838	17,027
Financing for installment sales	1,654	2,177
Other financing	1,243	1,306
Financing receivable	12,735	20,510
Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Used car financing	8	111,999
Financing for installment sales
Other financing	0	0
Financing receivable	$ 8	$ 111,999

FINANCING RECEIVABLE (Schedul_4

FINANCING RECEIVABLE (Schedule of Movement of Allowance for Financing Receivable) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Balance at beginning of year	$ (7,023)	$ (15,114)	$ (3,583)
Charge to cost of revenues	(10,802)	(12,745)	(12,436)
Write off of financing receivable	7,786	22,178	119
Exchange difference	782	(1,342)	786
Balance at end of year	$ (9,257)	$ (7,023)	$ (15,114)

FINANCING RECEIVABLE (Narrative

FINANCING RECEIVABLE (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Current	$ 12,743	$ 132,509
0-90 days aging [Member]
Financing Receivable, Recorded Investment, Current	0	10,021
Over 90 days aging [Member]
Financing Receivable, Recorded Investment, Current	$ 12,735	$ 10,489

PREPAID EXPENSES AND OTHER CU_3

PREPAID EXPENSES AND OTHER CURRENT ASSETS (Schedule Of Prepaid Expenses And Other Current Assets) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Advances to third parties	[1]	$ 30,787	$ 14,325
Prepaid expenses		4,144	3,919
Deposits		340	4,294
Loan to third parties		4,029	2,720
Funds receivable	[2]	1,477	3,880
Other current assets		5,988	6,812
Total		49,515	48,226
Mapbar Technology Limited [Member]
Disposal Group		0	4,585
Online Wealth Management Business
Disposal Group		2,388	3,482
Pingan Bank [Member]
Receivable from brokers	[3]	$ 362	$ 4,209
[1]	Advances to third parties mainly represents cash advanced to third party dealerships for car purchase. Specifically, some of the advances to third parties relates to consignment sales, in which the Company acts as an agent and assists other third party dealerships in the sale of their cars by allowing them to move their cars to the Company’s own lot. The Company pays those third party dealerships an advance amounting to the value of the car. The Company agrees to market those cars and if successfully sold, receives a commission from those third party dealerships. The Company does not take title to the cars and merely acts as an agent. The advance is subsequently settled either (1) when the car is sold by the Company or (2) if the car is not sold, the cash is remitted back to the Company by the third party dealership. The balance was substantially collected after December 31, 2018 and the commission earned from the above arrangements is immaterial for the years ended December 31, 2017 and 2018.
[2]	Funds receivable mainly represents balances paid by individuals for repayments of financing on Renren Fenqi as well as amounts paid by investors for investments made on Renren Licai that are held at a third party electronic payment service provider as of December 31, 2017 and 2018. The balances were collected subsequent to year-end.
[3]	Other receivable represents cash advanced to customers of third party dealerships for purchase of cars for which loans were approved by a bank but for which the customers has not yet received the cash. The amount was subsequently collected by the Company after year-end.

SHORT-TERM INVESTMENTS (Narrati

SHORT-TERM INVESTMENTS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Short-term investments [Line Items]
Trading Securities, Realized Gain		$ 577
Trading Securities, Realized Loss	$ 100

LONG-TERM INVESTMENTS (Narrativ

LONG-TERM INVESTMENTS (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended				12 Months Ended
	Jan. 31, 2017	Aug. 31, 2015	Oct. 31, 2014	Apr. 30, 2011	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity method investments:
Earnings (loss) in equity method investments, net of tax					$ (2,463)	$ 55,985	$ (7,840)
Equity Method Investment, Additional Information					1,500	1,500
Hylink [Member]
Equity method investments:
Equity Method Investment, Ownership Percentage				2.00%
Equity Investment with Readily Determinable Fair Values					$ (2,141)
Cash contribution made to acquire investments				$ 2,381
Available-for-sale:
Unrealized holding gains (loss)						$ 7,489
Plum Inc [Member]
Equity method investments:
Number of shares purchased		2,304,205
Payment for equity method investments		$ 10,500
Earnings (loss) in equity method investments, net of tax					$ 1,826	$ 1,452	1,352
Equity Method Investment, Ownership Percentage					19.64%	26.64%
Plum Inc [Member] | Debt Security [Member]
Available-for-sale:
Payments to acquire investments	$ 2,000
Fundrise LP [Member]
Equity method investments:
Payment for equity method investments			$ 10,000
Earnings (loss) in equity method investments, net of tax					$ 276	$ 148	$ 249
Equity Method Investment, Ownership Percentage					98.04%	98.04%

LONG-TERM INVESTMENTS (Schedule

LONG-TERM INVESTMENTS (Schedule Of Long-Term Investments) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
LONG-TERM INVESTMENTS [Line Items]
Total equity method investments		$ 19,614	$ 22,180
Total available-for-sale investment		2,000	2,000
Total long-term investments		22,341	34,742
Total equity investments without readily determinable fair values		727	768
Total equity investments with readily determinable fair values		0	9,794
SYI Venture Capital Center [Member]
LONG-TERM INVESTMENTS [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount		727	768
Hylink Advertising Co Ltd [Member]
LONG-TERM INVESTMENTS [Line Items]
Equity Securities With Readily Determinable Fair Value Amount	[1]	0	9,794
Others [Member]
LONG-TERM INVESTMENTS [Line Items]
Total equity method investments	[2]	2,714	3,731
Plum Inc [Member]
LONG-TERM INVESTMENTS [Line Items]
Total equity method investments	[3]	5,581	7,407
Total available-for-sale investment	[3]	2,000	2,000
Fundrise LP [Member]
LONG-TERM INVESTMENTS [Line Items]
Total equity method investments	[4]	$ 11,319	$ 11,042
[1]	In April 2011, the Company acquired 2% equity interest of Hylink Advertising Co., Ltd. at total cash consideration of $2,381. Hylink is mainly engaged in advertising agency service. The Company was not able to exercise significant influence over the operating and financial decisions of Hylink, and thus the Company used the cost method to account for its investment. In August 2017, Hylink successfully listed on the Shanghai Stock Exchange in China. The Company reassessed and classified the investment as equity investment with readily determinable fair values. Unrealized holding gains of $7,489 were reported in other comprehensive income for the year ended December 31, 2017. On January 1, 2018, the Company declared the investment to equity investment with readily determinable fair value upon the adoption of ASU 2016-01. Subsequently, the Company disposed Hylink and recognized a loss of $2,141.
[2]	Others represents other equity method investments with individual carrying amounts less than $1,500 as of December 31, 2017 and 2018, respectively.
[3]	In August 2015, the Company entered into agreements to purchase 2,304,205 Series A Preferred Shares issued by Plum Inc. for a total consideration of $10,500. The Company held 26.64% and 19.64% equity interest of Plum Inc. as of December 31, 2017 and 2018, respectively and recognized its share of loss in Plum Inc. of $1,352, $1,452 and $1,826 for the years ended December 31, 2016, 2017 and 2018, respectively. The Company accounted for this investment as equity method as of December 31, 2017 and 2018 as it believes it is able to exert significant influence through its board seat held by the Company. In January 2017, the Company entered into agreements to purchase convertible promissory note issued by Plum Inc. for a total consideration of $2,000. The Company accounted for it as available-for-sale investment as the Company determined this as debt security and measured at fair value. The unrealized gains or losses of US$ nil and US$ nil were reported in other comprehensive (loss) income for the years ended December 31, 2017 and 2018, respectively.
[4]	In October 2014, the Company entered into an agreement to purchase limited partnership interest of Fundrise, L.P. for a total consideration of $10,000. The Company held 98.04% equity interest as of December 31, 2017 and 2018 and recognized its share of gain of $249, $148 and $276 for the years ended December 31, 2016, 2017 and 2018, respectively.

LONG-TERM INVESTMENTS (Summary

LONG-TERM INVESTMENTS (Summary Of Financial Information Of The Equity Method Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity method investments [Line Items]
Net revenues	$ 3,021	$ 1,931	$ 1,217
Gross (loss) profits	616	(99)	(545)
Loss from continuing operations	(9,137)	(4,391)	(9,356)
Net loss	(9,137)	(4,391)	$ (9,356)
Equity method investments [Member]
Equity method investments [Line Items]
Total current assets	21,015	6,385
Total assets	33,181	26,055
Total current liabilities	2,584	1,867
Total liabilities	$ 11,008	$ 7,657

PROPERTY AND EQUIPMENT, NET (Sc

PROPERTY AND EQUIPMENT, NET (Schedule Of Property And Equipment, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property and equipment, net [Line Items]
Equipment, gross	$ 9,902	$ 50,795
Less: Accumulated depreciation	(8,347)	(21,196)
Less: Accumulated impairment loss	0	(90)
Equipment, net	1,555	29,509
Building [Member]
Property and equipment, net [Line Items]
Equipment, gross	0	32,002
Computer equipment and application software [Member]
Property and equipment, net [Line Items]
Equipment, gross	8,309	17,733
Furniture and vehicles [Member]
Property and equipment, net [Line Items]
Equipment, gross	540	295
Leasehold improvements [Member]
Property and equipment, net [Line Items]
Equipment, gross	$ 1,053	$ 765

PROPERTY AND EQUIPMENT, NET (Na

PROPERTY AND EQUIPMENT, NET (Narrative) (Details) - USD ($) $ in Thousands	May 15, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Depreciation expenses from continuing operations		$ 968	$ 1,968	$ 2,593
Depreciation expenses from discontinuing operations		0	6	85
Proceeds from Sale of Buildings	$ 60,388
Gain (Loss) on Disposition of Property Plant Equipment		$ 25,928	$ (13)	$ 95

Goodwill (Schedule Of Changes I

Goodwill (Schedule Of Changes In Carrying Amounts Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Costs:
Beginning balance	$ 101,937	$ 0
Addition in goodwill related to acquisitions	22,445	99,654
Subtraction in goodwill related to disposals	(4,741)
Impairment loss	(29,055)	0	$ 0
Exchange difference	(6,152)	2,283
Ending balance	$ 84,434	$ 101,937	$ 0

Goodwill (Narrative) (Details)

Goodwill (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill, Impairment Loss	$ 29,055	$ 0	$ 0
New Car Business [Member]
Goodwill, Impairment Loss	25,804
Sindeo Business [Member]
Goodwill, Impairment Loss	$ 3,251

SHORT - TERM DEBT AND LONG-TE_3

SHORT - TERM DEBT AND LONG-TERM DEBT (Narrative - Short-term debt) (Details) - USD ($) $ in Thousands

1 Months Ended

2 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Apr. 30, 2020

Feb. 28, 2019

Oct. 31, 2018

Sep. 30, 2018

Aug. 31, 2018

Jun. 30, 2018

May 31, 2018

Feb. 28, 2018

Jan. 31, 2018

Jun. 30, 2017

May 31, 2018

Mar. 31, 2019

Dec. 31, 2018

Dec. 31, 2018

Dec. 31, 2017

Jan. 01, 2019

Aug. 31, 2017

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 291

$ 17,787

$ 872

$ 6,109

$ 12,296

Debt Instrument, Term

1 year

Debt Instrument bear an annual interest rate

The loans all bear an annual interest rate of 10.8% and have a period of one month.

The loan bears an annual interest rate of 10.8% and have a period of six months.

The loan bears an annual interest rate of 130.0% over the one-year loan interest rate quoted by the People’s Bank of China and has a loan period of one year.

Debt Instrument, Interest Rate, Stated Percentage

8.50%

Debt Instrument, Face Amount

291

$ 17,787

$ 872

$ 6,109

$ 12,296

Debt bear annual interest rate

10.80%

10.80%

10.00%

Repayments of a Third Party Individual Debt

$ 291

$ 17,496

Line of Credit Facility Debt Instrument Bear Annual Interest Rate

10.80%

Scenario, Forecast [Member]

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 23,000

Debt Instrument, Description of Variable Rate Basis

LIBOR rate plus 1.2%

Debt Instrument, Face Amount

$ 23,000

Bank of Shanghai [Member]

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 11,636

$ 10,181

$ 11,636

Debt Instrument Annual Interest Rate as Percentage of One Year Loan

140.00%

130.00%

140.00%

Debt Instrument, Term

1 year

1 year

1 year

Debt Instrument bear an annual interest rate

The loans bear an annual interest rates ranging from 137.9% to 149.4% of the one year loan interest rate quoted by the People’s Bank of China and have loan periods ranging from eight to eleven months.

Debt Instrument, Face Amount

$ 11,636

$ 10,181

$ 11,636

East West Bank [Member]

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 27,000

$ 27,000

Debt Instrument, Description of Variable Rate Basis

LIBOR rate plus 1.2%

Repayments of Debt

$ 12,000

Debt Instrument, Face Amount

$ 27,000

$ 27,000

Repayments of Bank Debt

$ 10,000

Bank of Beijing [Member]

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 20,798

Debt Instrument, Term

1 year

Debt Instrument, Face Amount

$ 20,798

People bank of china [Member]

SHORT-TERM DEBT [Line Items]

Debt Instrument bear an annual interest rate

Both loans bear an annual interest rate of 140.0% over the one-year loan interest rate quoted by the People’s Bank of China and have a loan period of one year.

Repayments of Debt

$ 7,272

Third Party [Member]

SHORT-TERM DEBT [Line Items]

Face amount of debt

$ 787

Debt Instrument, Interest Rate, Stated Percentage

9.00%

Debt Instrument, Face Amount

$ 787

Subsequent Event [Member] | Bank of Beijing [Member]

SHORT-TERM DEBT [Line Items]

Repayments of a Third Party Individual Debt

$ 14,544

Minimum [Member]

SHORT-TERM DEBT [Line Items]

Debt instrument additional interest rate

0.05%

Minimum [Member] | Bank of Shanghai [Member]

SHORT-TERM DEBT [Line Items]

Debt Instrument Annual Interest Rate as Percentage of One Year Loan

137.90%

Maximum [Member]

SHORT-TERM DEBT [Line Items]

Debt instrument additional interest rate

1.355%

Maximum [Member] | Bank of Shanghai [Member]

SHORT-TERM DEBT [Line Items]

Debt Instrument Annual Interest Rate as Percentage of One Year Loan

149.40%

Short Term Loan Agreement With East West Bank [Member]

SHORT-TERM DEBT [Line Items]

Reclassed From Short Term Debt as Long Term Debt

$ 20,000

SHORT - TERM DEBT AND LONG-TE_4

SHORT - TERM DEBT AND LONG-TERM DEBT (Narrative - Long-term debt) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2018	Jan. 31, 2018	Dec. 31, 2018	Oct. 31, 2018	Sep. 30, 2018	Aug. 31, 2018	Aug. 31, 2017	Dec. 31, 2016
LONG-TERM DEBT [Line Items]
Face amount of debt		$ 6,109		$ 291	$ 17,787	$ 872	$ 12,296
Debt Instrument, Basis Spread on Variable Rate			1.20%
Debt Instrument, Maturity Date			Apr. 3, 2020
Short Term Loan Agreement With East West Bank [Member]
LONG-TERM DEBT [Line Items]
Repayments of Related Party Debt		$ 20,000
East West Bank [Member]
LONG-TERM DEBT [Line Items]
Face amount of debt			$ 27,000
Debt Instrument, Description of Variable Rate Basis			LIBOR rate plus 1.2%
Repayments of Related Party Debt	$ 10,000
Repayments of Debt			$ 12,000
East West Bank [Member] | Long-term Debt [Member]
LONG-TERM DEBT [Line Items]
Face amount of debt								$ 30,000

SHORT - TERM DEBT AND LONG-TE_5

SHORT - TERM DEBT AND LONG-TERM DEBT (Schedule Of Short Term Debt) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Total		$ 49,887	$ 61,479
Bank of Shanghai [Member]
Total	[1]	21,817	12,296
Hengfeng Bank [Member]
Total	[2]	0	49,183
Bank of Beijing [Member]
Total	[3]	20,798	0
Others [Member]
Total	[4]	$ 7,272	$ 0
[1]	In May and August 2017, the Company entered into five short-term loan agreements with Bank of Shanghai for $12,296. The loans bear an annual interest rates ranging from 137.9% to 149.4% of the one year loan interest rate quoted by the People’s Bank of China and have loan periods ranging from eight to eleven months. The Company repaid the loans in April 2018. In February 2018, the company entered into a loan agreement with Shanghai Bank for $10,181. The loan bears an annual interest rate of 130% over the one-year loan interest rate quoted by the People’s Bank of China and has a loan period of one year. The Company repaid the loan in February 2019. In April and May 2018, the Company entered into two loan agreements with Shanghai Bank for $11,636 in aggregate. Both loans bear an annual interest rate of 140% over the one-year loan interest rate quoted by the People’s Bank of China and have a loan period of one year. $7,272 of the loan was due in April 2019 and were repaid by the Company.
[2]	The loan obtained from Hengfeng Bank in 2017 had been repaid by the Company in May 2018.
[3]	In March, May and June 2018, the Company entered into four loan agreements with Bank of Beijing for $20,798 in aggregate. The loans bear annual interest rates of the Loan Prime Rate plus additional interest rate ranging from 0.05% to 1.355% with loan period of one year. $14,544 of the loan was due in March 2019 and had been repaid by the Company.
[4]	In January 2018, the Company entered into two loan agreements with a third party individual for a total amounting to $6,109. The loans had an annual interest rate of 10% and were due in July 2018. In July 2018, the Company further renewed the loans for another 6 months with the same interest rate, and subsequently repaid loans in January 2019. In February 2018, the Company entered into a loan agreement with a third party for $787 with an annual interest rate of 9%, which was due in March 2018. The Company repaid the loan in March 2018. In April, May, June, July, August and September 2018, the Company entered into eighteen loan agreements with an individual for $17,787 in aggregate. The loans all bear an annual interest rate of 10.8% and have a period of one month. $17,496 was repaid in May and June 2018, and the remaining balance of $291 was repaid in October 2018. In August 2018, the Company entered into two loan agreements with an individual for $872 in aggregate. The loans both bear an annual interest rate of 10.8% and have a period of two months and four months, respectively. Upon maturity, the Company further renewed the loans for another 12 months with the same interest rate. In October 2018, the Company entered into a loan agreement with the individual for $291. The loan bears an annual interest rate of 10.8% and have a period of six months. The Company repaid the loan in April 2019.

SHORT-TERM DEBT AND LONG-TERM D

SHORT-TERM DEBT AND LONG-TERM DEBT (Schedule Of Debt Instruments) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Long-term Debt, Excluding Current Maturities		$ 35,000	$ 47,665
Hengfeng Bank [Member]
Long-term Debt, Excluding Current Maturities	[1]	0	27,665
East West Bank [Member]
Long-term Debt, Excluding Current Maturities	[2]	$ 35,000	$ 20,000
[1]	The loan obtained from Hengfeng Bank in 2017 had been repaid by the Company in May 2018.
[2]	In December 2016, the Company entered into a short-term loan agreement with East West Bank for $30,000. The loan bears an annual interest rate equal to the one month LIBOR rate plus 1.2% and has a loan period of six month. In June 2017, the Company amended and extended the maturity date to April 2018. In October 2017, the Company repaid $10,000 of the loan balance. In January 2018, the Company further renewed its short term loan agreement with East West Bank and replaced it with a long-term debt. The long-term debt has an annual interest rate equal to LIBOR rate plus 1.2% and is repayable on April 3, 2020. Accordingly, the $20,000 of the loan was reclassified as long-term debt as of December 31, 2017. During the year ended December 31, 2018, the Company repaid $12,000 and additionally borrowed $27,000 from East West Bank. The maturity date of the remaining balance will be April 3, 2020 and the remaining loan balance bears an annual interest rate equal to LIBOR rate plus 1.2%

ACCRUED EXPENSES AND OTHER CU_3

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Schedule Of Accrued Expenses And Other Current Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued expenses and other current liabilities
Employee payroll and welfare payables	$ 1,738	$ 3,182
Other tax payable	14,119	12,650
Accrued professional, marketing and leasing fees	6,035	6,017
Advance from customers	4,078	6,220
Other payables	7,085	3,808
Total	$ 33,055	$ 31,877

PAYABLE TO INVESTORS (Schedule

PAYABLE TO INVESTORS (Schedule of Payable to Investors) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
		Feb. 28, 2019	Dec. 31, 2018	Mar. 31, 2019	Dec. 31, 2017
Debt Instrument, Interest Rate, Stated Percentage				8.50%
Debt Instrument, Term		1 year
Short-term payable to investors	[1]		$ 15		$ 142,689
Short-term Debt [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	[1]		8.60%
Debt Instrument, Term	[1]		15 days
Short-term Debt [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	[1]		11.00%
Debt Instrument, Term	[1]		12 months
[1]	The short-term payable to investors as of December 31, 2017 relates to the “Plans” and the balance in 2017 had been repaid by the Company in 2018.

INCOME TAXES (Narrative) (Detai

INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	Apr. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Statutory income tax rate (as a percent)		25.00%	25.00%	25.00%
Net operating loss carry forwards		$ 45,543	$ 55,745
PRC [Member]
Income Taxes [Line Items]
Statutory income tax rate (as a percent)		25.00%
Withholding income tax rate on dividends generated and payable by a foreign-invested enterprise in PRC to foreign non-resident enterprise investors (as a percent)		10.00%
PHILIPPINES
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Percent		30.00%
Foreign Tax Authority [Member] | Profit Slab One [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Percent	8.25%
Effective Tax Rate Terms And Conditions	profits tax rate for the first HKD 2 million
Foreign Tax Authority [Member] | Profit Slab Two [Member]
Income Taxes [Line Items]
Effective Income Tax Rate Reconciliation, Percent	16.50%
Effective Tax Rate Terms And Conditions	profits exceeding HKD 2 million
High and New Tech Enterprise [Member]
Income Taxes [Line Items]
Statutory income tax rate (as a percent)			15.00%

INCOME TAXES (Schedule Of Curre

INCOME TAXES (Schedule Of Current And Deferred Component Of Income Tax Expenses (Benefits) Which Were Substantially Attributable To The Companys PRC Subsidiaries And VIE And VIEs Subsidiaries) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current and deferred component of income tax expenses (benefits)
Income tax expenses	$ 9,850	$ 4,479	$ 2,470
PRC [Member]
Current and deferred component of income tax expenses (benefits)
Current income tax expenses	9,850	4,479	2,470
Deferred income tax expenses		0	0
Income tax expenses	$ 9,850	$ 4,479	$ 2,470

INCOME TAXES (Schedule Of Princ

INCOME TAXES (Schedule Of Principal Components Of The Deferred Tax Assets And Liabilities) (Details) - PRC [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets
Provision for doubtful accounts	$ 7,847	$ 3,422
Accrued payroll and welfare	390	809
Accrued liabilities	3,764	2,414
Long term investment impairment	0	2,328
Excessive advertising fee	1,416	1,990
Excessive employee education fee	80	161
Goodwill and intangible asset impairment	7,276
Net operating loss carry forwards	45,543	55,745
Less valuation allowance	(66,316)	(66,869)
Deferred tax assets, net	0	0
Deferred tax liabilities	$ 0	$ 0

INCOME TAXES (Schedule Of Recon

INCOME TAXES (Schedule Of Reconciliation Between The Income Taxes Expense (Benefit) Computed By Applying PRC Tax Rate To Income (Loss) Before Income Taxes And Actual Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating loss carry forwards [Line Items]
Loss before provision of income tax	$ (146,504)	$ (42,757)	$ (52,804)
PRC statutory income tax rate (as a percent)	25.00%	25.00%	25.00%
Income tax at statutory tax rate	$ (36,626)	$ (10,689)	$ (13,201)
Taxable deemed interest income from inter-company interest-free loans	6,406	7,288	6,925
Non-deductible loss and other expenses not deductible for tax purposes	30,016	4,469	12,422
Effect of income tax rate differences in jurisdictions other than the PRC	10,660	709	(54)
Effect of tax holidays	(53)	570	0
Changes in valuation allowance	(553)	2,132	(3,622)
Income tax expenses	$ 9,850	$ 4,479	$ 2,470

FAIR VALUE MEASUREMENTS (Summar

FAIR VALUE MEASUREMENTS (Summary Of Companys Financial Assets Measured And Recorded At Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financial assets measured and recorded at fair value [Line Items]
Cash and cash equivalents	$ 15,333	$ 125,199
Non-current Restricted cash	36,362	26,075
Recurring basis [Member]
Financial assets measured and recorded at fair value [Line Items]
Cash and cash equivalents	15,333	125,199
Restricted cash	5,818	47,253
Non-current Restricted cash	36,362	26,075
Long-term investments
Convertible debt	2,000	2,000
Equity investment with readily determinable fair values	0	9,794
Contingent consideration	(105,670)	(66,794)
Total	(46,157)	143,527
Recurring basis [Member] | Quoted price in active markets for identical assets Level 1 [Member]
Financial assets measured and recorded at fair value [Line Items]
Cash and cash equivalents	15,333	125,199
Restricted cash	5,818	47,253
Non-current Restricted cash	36,362	26,075
Long-term investments
Convertible debt	0	0
Equity investment with readily determinable fair values	0	0
Contingent consideration	0	0
Total	57,513	198,527
Recurring basis [Member] | Significant other observable inputs Level 2 [Member]
Financial assets measured and recorded at fair value [Line Items]
Cash and cash equivalents	0	0
Restricted cash	0	0
Non-current Restricted cash	0	0
Long-term investments
Convertible debt	0	0
Equity investment with readily determinable fair values	0	9,794
Contingent consideration	0	0
Total	0	9,794
Recurring basis [Member] | Significant unobservable inputs Level 3 [Member]
Financial assets measured and recorded at fair value [Line Items]
Cash and cash equivalents	0	0
Restricted cash	0	0
Non-current Restricted cash	0	0
Long-term investments
Convertible debt	2,000	2,000
Equity investment with readily determinable fair values	0	0
Contingent consideration	(105,670)	(66,794)
Total	$ (103,670)	$ (64,794)

FAIR VALUE MEASUREMENTS (Summ_2

FAIR VALUE MEASUREMENTS (Summary of additional information about the reconciliation of the fair value measurements using significant unobservable inputs level 3) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Balance at beginning of the period	$ 66,794	$ 62,493
Contingent consideration resulting from new acquisitions	14,113	66,794
Fair value change	29,604	2,601
Exchange difference	(4,841)	1,700
Balance at ending of the period	$ 105,670	$ 66,794
Car Dealerships [Member]
Planed Offering date	Apr. 30, 2019	Sep. 30, 2018
Discount rate (from acquisition date to Offering date)	15.00%	15.00%
Discount rate (from Offering date to the last settlement date)	2.75%	2.75%
Offering probability as of December 31, 2017	80.00%	45.00%

FAIR VALUE MEASUREMENTS (Fair V

FAIR VALUE MEASUREMENTS (Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques) (Details) - Car Dealerships [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Planed Offering date	Apr. 30, 2019	Sep. 30, 2018
Discount rate (from acquisition date to Offering date)	15.00%	15.00%
Discount rate (from Offering date to the last settlement date)	2.75%	2.75%
Offering probability as of December 31, 2018	80.00%	45.00%

FAIR VALUE MEASUREMENTS (Disclo

FAIR VALUE MEASUREMENTS (Disclosure of contingent consideration from acquisition of sales service centers) (Details) - Sales Service Centers [Member]	12 Months Ended
	Dec. 31, 2018
Planed Offering date	Apr. 30, 2019
Discount rate (from acquisition date to the last settlement date)	15.00%
Offering probability as of December 31, 2018	80.00%

SHARE-BASED COMPENSATION (Stock

SHARE-BASED COMPENSATION (Stock Options) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands

Jun. 30, 2018

Mar. 15, 2018

May 19, 2014

May 31, 2019

Jan. 29, 2019

Aug. 24, 2017

Feb. 26, 2016

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

May 31, 2018

Jan. 31, 2018

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options granted to employees, management and external advisors (in shares)

2,206,888

Total incremental cost

$ 10,779

$ 10,382

Closing stock price of ordinary shares (in dollars per share)

$ 0.10

$ 0.69

$ 0.53

Unrecognized share-based compensation cost disclosure

Intrinsic value of options exercised

$ 21

$ 293

$ 1,118

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value

7,532

16,036

12,721

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Related To Vested Options

7,427

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost Related To Unvested Options

1,475

2,955

Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price

$ 0.0613

Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost

$ 10,779

$ 10,382

Share based compensation arrangement by share based payment award to vested option modification incremental compensation cost

$ 9,304

Share-based Compensation

$ 31,603

28,016

$ 23,544

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

2,206,888

Kaixin Plan [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options granted to employees, management and external advisors (in shares)

36,461,500

Unrecognized share-based compensation cost disclosure

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross

36,461,500

Stock options [Member]

Unrecognized share-based compensation cost disclosure

Weighted-average vesting period for recognition of unrecognized share-based compensation cost

1 year 8 months 12 days

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

$ 0.54

Stock options [Member] | Kaixin Plan [Member]

Unrecognized share-based compensation cost disclosure

Unrecognized share-based compensation expense relating to share options

$ 9,259

Weighted-average vesting period for recognition of unrecognized share-based compensation cost

3 years 2 months 19 days

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

$ 0.52

Employee stock options [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Share-based compensation expenses from continuing operations

$ 18,640

$ 19,420

Unrecognized share-based compensation cost disclosure

Unrecognized share-based compensation expense relating to share options

14,285

Employee stock options [Member] | Kaixin Plan [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Share-based compensation expenses from continuing operations

$ 23,904

Unrecognized share-based compensation cost disclosure

Share-based Compensation

$ 9,046

Employee stock options [Member] | Share-based Compensation Award, Tranche Two [Member]

Unrecognized share-based compensation cost disclosure

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights

(2) 25% of the options will be vested on May 19, 2015 and 1/36 of the remaining 75% will be vested at the 18 th day of each calendar month after May 19, 2015 through the end of the fourth year

Employee stock options [Member] | Share-based Compensation Award, Tranche One [Member]

Unrecognized share-based compensation cost disclosure

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights

1/36 of the remaining 75% will be vested at the 18 th day of each calendar month after May 19, 2015

Modified Stock Options 24 August 2017 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Exercise price of the outstanding share options granted before modification (in dollars per ADS)

$ 0.478

Exercise price of the outstanding share options granted after modification (in dollars per ADS)

$ 0.478

Restricted Stock Units (RSUs) [Member]

Unrecognized share-based compensation cost disclosure

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period

2,407,733

2011 Stock Incentive Plan [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

110,014,158

Unrecognized share-based compensation cost disclosure

Number of ordinary shares added to award pool

45,000,000

Stock Incentive Plan 2006 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

97,430,220

Stock Incentive Plan 2008 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

30,529,630

Stock Incentive Plan 2009 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

40,000,000

Stock Incentive Plan 2016 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

53,596,236

Stock Incentive Plan 2018 [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

107,100,000

Stock Incentive Plan [Member] | Kaixin Plan [Member]

SHARE-BASED COMPENSATION : Stock Options [Line Items]

Options approved under the plan (in shares)

140,000,000

40,000,000

SHARE-BASED COMPENSATION (Sched

SHARE-BASED COMPENSATION (Schedule Of Fair Value Of Options Granted, Estimated On Date Of Grant Using Option-Pricing Models With Assistance From Marsh, Independent Valuation Firm, With Assumptions Used) (Details) - $ / shares		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2016	Dec. 31, 2017	May 31, 2016
Fair value of the options granted, estimated on the date of grant using option-pricing models with assistance an independent valuation firm, with assumptions used [Line Items]
Risk-free interest rate (as a percent)	[1]	2.82%
Exercise price		$ 0.3
Dividend yield (as a percent)	[2]	8212.00%
Fair value of underlying ordinary share		$ 0.10		$ 0.53	$ 0.69
Binomial option pricing model [Member]
Fair value of the options granted, estimated on the date of grant using option-pricing models with assistance an independent valuation firm, with assumptions used [Line Items]
Risk-free interest rate (as a percent)				2.00%
Volatility (as a percent)				50.00%
Expected term (in years)		10 years	[3]	10 years
Exercise price				$ 1.227
Dividend yield (as a percent)				0.00%
Fair value of underlying ordinary share	[4]					$ 0.75
Maximum [Member] | Binomial option pricing model [Member]
Fair value of the options granted, estimated on the date of grant using option-pricing models with assistance an independent valuation firm, with assumptions used [Line Items]
Volatility (as a percent)	[5]	55.00%
Minimum [Member] | Binomial option pricing model [Member]
Fair value of the options granted, estimated on the date of grant using option-pricing models with assistance an independent valuation firm, with assumptions used [Line Items]
Volatility (as a percent)	[5]	28.00%
[1]	Risk-free interest rate was estimated based on the yield to maturity of treasury bonds of the United States with a maturity period close to the expected life of the options.
[2]	The dividend yield was estimated by the Company based on its expected dividend policy over the expected term of the options.
[3]	For the options granted to employees, the Company estimated the expected term based on the vesting and contractual terms and employee demographics. For the options granted to non-employees, the Company estimated the expected term as the original contractual term.
[4]	The estimated fair value of the ordinary shares underlying the options as of the valuation date was determined based on a contemporaneous valuation. When estimating the fair value of the ordinary shares on the valuation dates, management has considered a number of factors, including the result of a third party appraisal of the Company, while taking into account standard valuation methods and the achievement of certain events. The fair value of the ordinary shares in connection with the option grants on the valuation date was determined with the assistance of an independent third party appraiser.
[5]	The volatility of the underlying ordinary shares during the life of the options was estimated based on the historical stock price volatility of listed comparable companies over a period comparable to the expected term of the options.

SHARE-BASED COMPENSATION (Summa

SHARE-BASED COMPENSATION (Summary Of Information With Respect To Share Options Outstanding) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Jan. 29, 2019
Options outstanding
Weighted average exercise price (in dollars per share)			$ 0.0613
Renren stock options [Member]
Options outstanding
Number outstanding (in shares)	139,094,101
Weighted average intrinsic value	$ 5,754
Options exercisable
Number of exercisable (in shares)	117,561,450
Weighted average intrinsic value	$ 4,863
Kaixin Auto Group Incentive Plan [Member]
Options outstanding
Number outstanding (in shares)	35,281,500
Options exercisable
Number of exercisable (in shares)	13,333,151
Range of exercise price from $0.01-$0.18 [Member] | Renren stock options [Member]
Information with respect to share options outstanding [Line Items]
Low end of range of exercise prices (in dollars per share)		$ 0.01
High end of range of exercise prices (in dollars per share)		$ 0.18
Options outstanding
Number outstanding (in shares)	139,094,101
Weighted average remaining contractual life	5 years 4 months 24 days
Weighted average exercise price (in dollars per share)	$ 0.06
Weighted average intrinsic value	$ 5,754
Options exercisable
Number of exercisable (in shares)	117,561,450
Weighted average remaining contractual life	5 years 1 month 9 days
Weighted average exercise price (in dollars per share)	$ 0.06
Weighted average intrinsic value	$ 4,863
Range of exercise price from $0.3 [Member] | Kaixin Auto Group Incentive Plan [Member]
Information with respect to share options outstanding [Line Items]
Low end of range of exercise prices (in dollars per share)	$ 0.3
Options outstanding
Number outstanding (in shares)	35,281,500
Weighted average remaining contractual life	9 years 2 months 8 days
Weighted average exercise price (in dollars per share)	$ 0.30
Options exercisable
Number of exercisable (in shares)	13,333,151
Weighted average remaining contractual life	9 years 2 months 8 days
Weighted average exercise price (in dollars per share)	$ 0.30

SHARE-BASED COMPENSATION (Sum_2

SHARE-BASED COMPENSATION (Summary Of Activity Of Stock Options Granted) (Details) - $ / shares	1 Months Ended	12 Months Ended
	May 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Number of shares
Granted (in shares)	2,206,888
Stock options [Member]
Number of shares
Balance at the beginning of the period (in shares)		141,481,616
Exercised (in shares)		(2,268,420)
Forfeited (in shares)		(119,095)
Balance at the end of the period (in shares)		139,094,101
Exercisable, at the end of the period (in shares)		117,561,450
Vested and expected to vest, at the end of the period (in shares)		21,532,651
Weighted average exercise price
Balance at the beginning of the period (in dollars per share)		$ 0.48
Exercised (in dollars per share)		0.06
Forfeited (in dollars per share)		0.16
Balance at the end of the period (in dollars per share)		0.06
Exercisable, at the end of the period (in dollars per share)		0.06
Vested and expected to vest, at the end of the period (in dollars per share)		0.06
Weighted average grant date fair value
Balance at the beginning of the period (in dollars per share)		0.64
Granted (in dollars per share)			$ 0.54
Exercised (in dollars per share)		0.66
Forfeited (in dollars per share)		0.15
Balance at the end of the period (in dollars per share)		$ 0.64
Kaixin Stock Options [Member]
Number of shares
Balance at the beginning of the period (in shares)		0
Granted (in shares)		36,461,500
Exercised (in shares)		0
Forfeited (in shares)		(1,180,000)
Balance at the end of the period (in shares)			35,281,500
Exercisable, at the end of the period (in shares)		13,333,151
Vested and expected to vest, at the end of the period (in shares)		21,948,349
Weighted average exercise price
Balance at the beginning of the period (in dollars per share)		$ 0
Granted (in dollars per share)		0.30
Exercised (in dollars per share)		0
Forfeited (in dollars per share)		0.30
Balance at the end of the period (in dollars per share)			$ 0.30
Exercisable, at the end of the period (in dollars per share)		0.30
Vested and expected to vest, at the end of the period (in dollars per share)		0.30
Weighted average grant date fair value
Balance at the beginning of the period (in dollars per share)		0
Granted (in dollars per share)		0.52
Exercised (in dollars per share)		0
Forfeited (in dollars per share)		0.52
Balance at the end of the period (in dollars per share)			$ 0.52
Exercisable, December 31, 2018		0.52
Expected to vest, December 31, 2018		$ 0.52

SHARE-BASED COMPENSATION (Sum_3

SHARE-BASED COMPENSATION (Summary Of Nonvested Restricted Shares Activity) (Details) - Nonvested restricted shares [Member]	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Weighted number of nonvested restricted shares
Outstanding at the beginning of the period (in shares) | shares	10,802,683
Granted (in shares) | shares	88,935,342
Vested (in shares) | shares	(8,404,575)
Forfeited (in shares) | shares	(17,561,071)
Outstanding at the end of the period (in shares) | shares	73,772,379
Weighted average fair value per ordinary share at the grant dates
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 0.95
Granted (in dollars per share) | $ / shares	0.14
Vested (in dollars per share) | $ / shares	0.47
Forfeited (in dollars per share) | $ / shares	0.18
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 0.21

SHARE-BASED COMPENSATION (Nonve

SHARE-BASED COMPENSATION (Nonvested Restricted Shares) (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other disclosures
Compensation expense	$ 31,603	$ 28,016	$ 23,544
Nonvested restricted shares [Member]
Other disclosures
Compensation expense	3,917	$ 4,112	$ 4,124
Unrecognized compensation expense	$ 15,345
Expected weighted-average period for unrecognized compensation expense to be recognized	3 years 4 months 17 days

SHARE-BASED COMPENSATION (Share

SHARE-BASED COMPENSATION (Share-Based Compensation Attributable To Selling And Marketing, Research And Development And General And Administrative Expenses And Loss From Operations Of Discontinued Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based compensation recorded by Group [Line Items]
Share-based compensation	$ 31,603	$ 28,016	$ 23,544
Selling and marketing [Member]
Share-based compensation recorded by Group [Line Items]
Share-based compensation expenses from continuing operations	1,927	598	770
Research and development [Member]
Share-based compensation recorded by Group [Line Items]
Share-based compensation expenses from continuing operations	1,142	1,092	1,363
General and administrative [Member]
Share-based compensation recorded by Group [Line Items]
Share-based compensation expenses from continuing operations	$ 28,534	$ 26,326	$ 21,411

RELATED PARTY BALANCES AND TR_3

RELATED PARTY BALANCES AND TRANSACTIONS (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands

1 Months Ended

2 Months Ended

12 Months Ended

Feb. 28, 2019

Apr. 17, 2017

Oct. 31, 2015

Mar. 31, 2014

Sep. 30, 2012

Jul. 31, 2012

Feb. 28, 2015

Dec. 31, 2016

Dec. 31, 2006

Mar. 31, 2019

Dec. 31, 2018

Dec. 31, 2017

Details of related party balances and transactions [Line Items]

Amounts due from related parties

$ 20,829

$ 188

Maturity period

1 year

Debt Instrument, Interest Rate, Stated Percentage

8.50%

Due from Related Parties, Noncurrent

133,880

$ 0

Liu Guolan [Member]

Details of related party balances and transactions [Line Items]

Payments to Fund Long-term Loans to Related Parties

$ 167

Maturity period

10 years

Other Income

$ 7,021

Proceeds from (Repayments of) Related Party Debt

$ 7,188

Beijing Infinities [Member]

Details of related party balances and transactions [Line Items]

Due from Related Parties, Noncurrent

60,000

Beijing Infinities [Member] | Cash Consideration [Member]

Details of related party balances and transactions [Line Items]

Due from Related Parties, Noncurrent

20,000

Beijing Infinities [Member] | Equity Consideration [Member]

Details of related party balances and transactions [Line Items]

Due from Related Parties, Noncurrent

$ 40,000

SoFi [Member]

Details of related party balances and transactions [Line Items]

Payment for equity method investments

$ 91,926

Equity Method Investment Number Of Securities Sold

5,719,986

Equity Method Investment, Realized Gain (Loss) on Disposal

$ 58,335

SoFi [Member] | Series B shares [Member]

Details of related party balances and transactions [Line Items]

Payment for equity method investments

$ 49,000

SoFi [Member] | Series D shares [Member]

Details of related party balances and transactions [Line Items]

Payment for equity method investments

$ 20,789

SoFi [Member] | Series E preferred shares [Member]

Details of related party balances and transactions [Line Items]

Payment for equity method investments

$ 22,331

SoFi [Member] | Series F Preferred Stock [Member]

Details of related party balances and transactions [Line Items]

Payment for equity method investments

$ 150,000

SoFi Lending Corp. [Member] | Series 2012-A Senior Secured Refi Loan Notes [Member]

Details of related party balances and transactions [Line Items]

Purchases of Series 2012-A Senior Secured Refi Loan Notes

$ 10,000

Oak Pacific Investment [Member]

Details of related party balances and transactions [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

8.00%

Oak Pacific Investment [Member] | Notes Receivable [Member]

Details of related party balances and transactions [Line Items]

Amounts due from related parties

$ 90,000

Oak Pacific Investment [Member] | Accrued Income Receivable [Member]

Details of related party balances and transactions [Line Items]

Amounts due from related parties

$ 3,880

RELATED PARTY BALANCES AND TR_4

RELATED PARTY BALANCES AND TRANSACTIONS (Schedule Of Amounts Due From Related Parties) (Details) - USD ($) $ in Thousands		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Amounts due from related parties [Line Items]
Total		$ 153,880		$ 8,591		$ 0
Oak Pacific Investment [Member]
Amounts due from related parties [Line Items]
Total		93,880	[1]	0	[1]	$ 0
Beijing Infinities [Member]
Amounts due from related parties [Line Items]
Total	[2]	60,000		0
Others [Member]
Amounts due from related parties [Line Items]
Others		$ 829		$ 188
[1]	The balance represents the US$90 million note issued by Oak Pacific Investment to Renren and US$3.88 million accrued interest expenses. In connection with the private placement transaction completed on June 21, 2018, OPI issued a note to Renren with an interest rate of 8% per year. The term of the note is the earlier of five years and the date upon which OPI and its subsidiaries no longer hold any shares of Social Finance Inc. In March 2019, the interest rate was increased to 8.5% per year in connection with a refinancing of Oak Pacific Investment’s debt obligations.
[2]	The balance represents the US$60 million receivable from Beijing Infinities as of December 31, 2018 in connection with the disposition of Renren SNS, including US$20 million in cash and US$40 million in the form of Beijing Infinities shares to be issued to the Company. Refer to Note 4 for further details.

RELATED PARTY BALANCES AND TR_5

RELATED PARTY BALANCES AND TRANSACTIONS (Schedule Of Amount Due To Related Parties) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Amounts due from related parties [Line Items]
Minority shareholders	$ 0	$ 6,859,000
Others	55	200
Total	$ 55,000	$ 7,059,000

RELATED PARTY BALANCES AND TR_6

RELATED PARTY BALANCES AND TRANSACTIONS (Schedule Of Transactions With Related Parties For Amount Due From Related Parties) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 06, 2018	Dec. 31, 2017		Dec. 31, 2016
Related Party Transaction [Line Items]
Transactions with related parties for amount due from related parties	$ 153,880			$ 8,591		$ 0
Beijing Infinities [Member]
Related Party Transaction [Line Items]
Transactions with related parties for amount due from related parties	60,000			0		0
Oak Pacific Investment [Member]
Related Party Transaction [Line Items]
Transactions with related parties for amount due from related parties	$ 93,880	[1]		0	[1]	0
Suzhou Youge Interconnection Venture Capital Center [Member]
Related Party Transaction [Line Items]
Transactions with related parties for amount due from related parties			$ 0	$ 8,591		$ 0
[1]	The balance represents the US$90 million note issued by Oak Pacific Investment to Renren and US$3.88 million accrued interest expenses. In connection with the private placement transaction completed on June 21, 2018, OPI issued a note to Renren with an interest rate of 8% per year. The term of the note is the earlier of five years and the date upon which OPI and its subsidiaries no longer hold any shares of Social Finance Inc. In March 2019, the interest rate was increased to 8.5% per year in connection with a refinancing of Oak Pacific Investment’s debt obligations.

RELATED PARTY BALANCES AND TR_7

RELATED PARTY BALANCES AND TRANSACTIONS (Schedule Of Transactions With Related Parties For Amount Due To Related Parties) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Due to Related Parties	$ 7,252	$ 333	$ 11,105
Oak Pacific Investment [Member]
Related Party Transaction [Line Items]
Due to Related Parties	1,834	0	10,692
Others [Member]
Related Party Transaction [Line Items]
Due to Related Parties	$ 5,418	$ 333	$ 413

SEGMENT INFORMATION (Schedule O

SEGMENT INFORMATION (Schedule Of Components Of Net Revenues) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2006
SEGMENT INFORMATION
Net revenues	$ 498,198	$ 174,624	$ 47,481	$ 47,481
Cost of revenues	(449,805)	(116,385)	0
Operating expenses	(135,132)	(88,999)	(60,880)
Loss from operations	(113,402)	(77,689)	(53,976)
Net (loss) income from continuing operations	(158,817)	8,749	(63,114)
Net (loss) income from discontinued operations	223,298	(119,252)	(122,238)
Net (loss) income	64,481	(110,503)	(185,352)
Renren [Member]
SEGMENT INFORMATION
Net revenues	19,122	21,931	18,097
Cost of revenues	(11,966)	(17,920)	(14,698)
Operating expenses	(66,847)	(58,543)	(35,344)
Loss from operations	(59,691)	(54,532)	(31,945)
Net (loss) income from continuing operations	(69,285)	37,444	(39,060)
Net (loss) income from discontinued operations	223,298	(119,252)	(122,238)
Net (loss) income	154,013	(81,808)	(161,298)
Auto Group [Member]
SEGMENT INFORMATION
Net revenues	479,076	152,693	29,384	$ 29,384
Cost of revenues	(464,502)	(145,394)	(25,879)
Operating expenses	(68,285)	(30,456)	(25,536)
Loss from operations	(53,711)	(23,157)	(22,031)
Net (loss) income from continuing operations	(89,532)	(28,695)	(24,054)
Net (loss) income from discontinued operations	0	0	0
Net (loss) income	$ (89,532)	$ (28,695)	$ (24,054)

NET (LOSS) INCOME PER SHARE (Na

NET (LOSS) INCOME PER SHARE (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	39,752,430	142,615,572
Nonvested shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	6,286,947	9,668,727

NET (LOSS) INCOME PER SHARE (Sc

NET (LOSS) INCOME PER SHARE (Schedule Of Computation Of Basic And Diluted Net Loss Per Ordinary Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net loss:
(Loss) income from continuing operations	$ (158,817)	$ 8,749	$ (63,114)
(Loss) income from discontinued operations, net of tax	223,298	(119,252)	(122,238)
Net (loss) income	64,481	(110,503)	(185,352)
Add: net loss attributable to noncontrolling interest	8,059	76	0
Net (loss) income attributable to Renren Inc.	$ (72,540)	$ 110,427	$ 185,352
Weighted average number of ordinary shares outstanding used in computing net loss per ordinary share-basic	1,036,421,063	1,028,537,406	1,022,664,396
Incremental weighted average ordinary shares from assumed exercise of stock options using the treasury stock method	59,384,854	1,199,533	4,512,567
Weighted average number of ordinary shares outstanding used in computing net income per ordinary share-diluted	1,095,805,917	1,029,736,939	1,027,176,963
Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic:
(Loss) income per ordinary share from continuing operations	$ (0.15)	$ 0.01	$ (0.06)
(Loss) income per ordinary share from discontinued operations	0.22	(0.12)	(0.12)
Net (loss) income per ordinary share attributable to Renren Inc. shareholders - basic:	0.07	(0.11)	(0.18)
Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted:
(Loss) income per ordinary share from continuing operations	(0.15)	0.01	(0.06)
(Loss) income per ordinary share from discontinued operations	0.20	(0.12)	(0.12)
Net (loss) income per ordinary share attributable to Renren Inc. shareholders - diluted:	$ 0.07	$ (0.11)	$ (0.18)

COMMITMENTS (Narrative) (Detail

COMMITMENTS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Commitments [Line Items]
Rental and Bandwidth expenses under operating leases from continuing operations	$ 8,269	$ 5,793	$ 5,814
Rental and Bandwidth expenses under operating leases from discontinuing operations	48	133	$ 333
Capital commitments
Obligation to pay for acquisition of investments	$ 0	$ 1,736

COMMITMENTS (Schedule Of Future

COMMITMENTS (Schedule Of Future Minimum Lease Payments Under Non-Cancellable Operating Leases) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Future minimum lease payments under non-cancellable leases
2019	$ 5,735
2020	4,860
2021	1,840
2022	943
2023	332
2024 and thereafter	987
Total	14,697
Future minimum principal payments related to long-term debts
2019	0
2020	35,000
Total	$ 35,000

EMPLOYEE BENEFIT PLAN (Narrativ

EMPLOYEE BENEFIT PLAN (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Provisions for employee benefits under government-mandated defined contribution plan from continuing operation	$ 8,640	$ 7,130	$ 6,051
Provisions for employee benefits under government-mandated defined contribution plan from discontinuing operations	$ 178	$ 399	$ 503

OTHER COMPREHENSIVE INCOME (L_3

OTHER COMPREHENSIVE INCOME (LOSS) (Narrative) (Details)	1 Months Ended
	Jan. 31, 2018USD ($)
Cumulative Effect on Retained Earnings, Net of Tax	$ 7,363

OTHER COMPREHENSIVE INCOME (L_4

OTHER COMPREHENSIVE INCOME (LOSS) (Schedule Of Comprehensive Income/Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Foreign currency translation adjustments, Beginning Balance	$ 81	$ (9,504)	$ 1,490
Foreign currency translation adjustments, Exchange difference	(5,770)	9,585	(10,994)
Foreign currency translation adjustments, Ending Balance	(5,689)	81	(9,504)
Unrealized gain (loss) on available-for-sale investments, Beginning Balance	17,035	16,387	35,634
Unrealized gain (loss) on available-for-sale investments, Exchange difference	(17,035)	648	(19,247)
Unrealized gain (loss) on available-for-sale investments, Ending Balance	0	17,035	16,387
Total, Beginning Balance	17,116	6,883	37,124
Exchange difference	(22,805)	10,233	(30,241)
Total, Ending Balance	$ (5,689)	$ 17,116	$ 6,883

STATUTORY RESERVE AND RESTRIC_2

STATUTORY RESERVE AND RESTRICTED NET ASSETS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Percentage of after-tax profits required to be allocated to general reserve	10.00%
General reserve as a percentage of registered capital up to which after-tax profit of PRC subsidiaries and VIEs shall be transferred	50.00%
Aggregate amount of net assets of the relevant subsidiaries and VIE entities in the Company not available for distribution	$ 352,535	$ 435,999

Additional Information - Fina_3

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (BALANCE SHEETS) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 15,333	$ 125,199
Prepaid expenses and other current assets	49,515	48,226
Amounts due from related parties	20,829	188
Total current assets	156,762	468,005
Long-term investments	22,341	34,742
TOTAL ASSETS	437,193	1,194,164
Current liabilities:
Accrued expenses and other current liabilities	33,055	31,877
Amounts due to related party	55	7,059
Total current liabilities	127,514	370,547
Long-term liabilities	35,000	47,665
TOTAL LIABILITIES	256,255	485,418
Equity:
Additional paid-in capital	709,137	1,303,117
Accumulated deficit	(563,737)	(653,173)
Accumulated other comprehensive income	(5,689)	17,116	$ 6,883	$ 37,124
Total Renren Inc. shareholders' equity	147,465	674,804
TOTAL LIABILITIES AND EQUITY	437,193	1,194,164
Class A ordinary shares [Member]
Equity:
Ordinary shares	737	727
Class B ordinary shares [Member]
Equity:
Ordinary shares	305	305
Parent Company [Member]
Current assets:
Cash and cash equivalents	749	97,697
Prepaid expenses and other current assets	908	5,179
Amounts due from subsidiaries	493,231	1,144,420
Amounts due from related parties	93,880	0
Total current assets	588,768	1,247,296
Long-term investments	417	209,605
TOTAL ASSETS	589,185	1,456,901
Current liabilities:
Long-term debt - current	0	52,604
Accrued expenses and other current liabilities	3,583	15,508
Amounts due to related party	27	0
Total current liabilities	3,610	68,112
Long-term liabilities	35,000	20,000
Other non-current liabilities	0	6,356
Deficit of investment in subsidiaries	403,110	687,629
TOTAL LIABILITIES	441,720	782,097
Equity:
Additional paid-in capital	709,137	1,303,117
Accumulated deficit	(557,025)	(646,461)
Accumulated other comprehensive income	(5,689)	17,116
Total Renren Inc. shareholders' equity	147,465	674,804
TOTAL LIABILITIES AND EQUITY	589,185	1,456,901
Parent Company [Member] | Class A ordinary shares [Member]
Equity:
Ordinary shares	737	727
Parent Company [Member] | Class B ordinary shares [Member]
Equity:
Ordinary shares	$ 305	$ 305

Additional Information - Fina_4

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (BALANCE SHEETS) (Parenthetical) (Details) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Class A ordinary shares [Member]
Consolidated financial information [Line Items]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	3,000,000,000	3,000,000,000
Ordinary shares, shares issued	737,222,448	726,549,453
Ordinary shares, shares outstanding	737,222,448	726,549,453
Class B ordinary shares [Member]
Consolidated financial information [Line Items]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	305,388,450	305,388,450
Ordinary shares, shares outstanding	305,388,450	305,388,450
Parent Company [Member] | Class A ordinary shares [Member]
Consolidated financial information [Line Items]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	3,000,000,000	3,000,000,000
Ordinary shares, shares issued	737,222,448	726,549,453
Ordinary shares, shares outstanding	737,222,448	726,549,453
Parent Company [Member] | Class B ordinary shares [Member]
Consolidated financial information [Line Items]
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares authorized	500,000,000	500,000,000
Ordinary shares, shares issued	305,388,450	305,388,450
Ordinary shares, shares outstanding	305,388,450	305,388,450

Additional Information - Fina_5

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME
Selling and marketing	$ 34,562	$ 20,070	$ 13,932
Research and development	26,349	17,435	7,542
General and administrative	71,094	51,494	39,406
Total operating expenses	135,132	88,999	60,880
Other income	(2,014)	2,656	8,336
Interest income	5,760	1,988	832
Interest expenses	(5,103)	(4,322)	(7,107)
(Loss) earnings in equity method investments	(2,463)	55,985	(7,840)
Gain on deconsolidation of the subsidiaries	242,097	0	8,310
Net (loss) income	64,481	(110,503)	(185,352)
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(5,770)	9,585	(10,994)
Net unrealized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(9,671)	3,891	(18,518)
Transfer to statements of operations of realized gain on available-for-sale securities, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(7,364)	(3,243)	(729)
Other comprehensive (loss) income	(22,805)	10,233	(30,241)
Comprehensive (loss) income attributable to Renren Inc.	52,254	(100,194)	(215,593)
Parent Company [Member]
STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME
Selling and marketing	423	598	770
Research and development	1,035	1,092	1,363
General and administrative	25,536	33,519	25,477
Total operating expenses	26,994	35,209	27,610
Other income	924	1,385	307
Interest income	3,969	223	127
Interest expenses	(3,989)	(6,391)	(5,728)
(Loss) earnings in equity method investments	(1,415)	9,743	(3,968)
Gain on disposal of equity method investments	0	58,335	0
Gain on disposal of equity investments without readily determinable fair values	0	37,311	0
Gain on deconsolidation of the subsidiaries	182,441	0	0
Equity in loss of subsidiaries and variable interest entities	(82,396)	(175,824)	(148,480)
Net (loss) income	72,540	(110,427)	(185,352)
Other comprehensive (loss) income, net of tax:
Foreign currency translation	(5,770)	9,585	(10,994)
Net unrealized (loss) gain on available-for-sale investments, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(9,671)	3,891	(18,518)
Non-controlling interest disposition	2,519	0	0
Transfer to statements of operations of realized gain on available-for-sale securities, net of tax of $nil for the years ended December 31, 2016, 2017 and 2018, respectively	(7,364)	(3,243)	(729)
Other comprehensive (loss) income	(20,286)	10,233	(30,241)
Comprehensive (loss) income attributable to Renren Inc.	$ 52,254	$ (100,194)	$ (215,593)

Additional Information - Fina_6

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME) (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	0	0	0
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	$ 0	$ 0	$ 0

Additional Information - Fina_7

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (STATEMENTS OF CASH FLOWS) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ 64,481	$ (110,503)	$ (185,352)
Share-based compensation expense	31,603	28,016	23,544
Gain on deconsolidation of subsidiaries	(242,097)	(1,825)	(12,895)
Exchange loss (gain) on offshore accounts	0	0	4
Fair value change of liability-classified warrant	(233)	(195)	(105)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	51,864	(20,842)	7,934
Accrued expenses and other current liabilities	(5,442)	8,576	2,037
Other non-current liabilities	3,147	5,862	5,332
Net cash used in operating activities	(60,239)	(114,964)	(11,005)
Cash flows from investing activities:
Proceeds from principal return on SoFi Loan Note	0	0	5,879
Proceeds from sale of equity method investment	0	94,604	18,460
Proceeds from sale of equity investments without readily determinable fair values	4,585	32,726	0
Cash disposed of from deconsolidation of subsidiaries	0	1,179	6,176
Net cash (used in) provided by investing activities	170,844	263,285	(183,653)
Cash flows from financing activities:
Proceeds from exercise of share options	526	262	1,430
Cash distribution to shareholders related to acquisition of OPI	(168,983)	0	0
Repayment of borrowings	(119,000)	(68,025)	(131,900)
Proceeds from loan from a related party	0	0	10,692
Net cash provided by (used in) financing activities	(254,179)	(67,113)	126,075
Effect of exchange rate changes	(836)	10,631	(4,833)
Parent Company [Member]
Cash flows from operating activities:
Net (loss) income	72,540	(110,427)	(185,352)
Equity in income of subsidiaries and variable interest entities	82,396	175,824	148,480
Share-based compensation expense	22,557	28,016	23,544
Gain on deconsolidation of subsidiaries	(182,441)	0	0
Gain on disposal of equity investments without readily determinable fair values	0	(37,311)	0
Exchange loss (gain) on offshore accounts	1	(1)	3
Loss (earnings) in equity method investment	1,415	(68,078)	3,968
Fair value change of liability-classified warrant	0	(195)	(105)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	(646)	(294)	107
Accrued expenses and other current liabilities	(11,925)	1,902	(1,689)
Other non-current liabilities	(58,960)	5,862	5,332
Increase in amounts due from subsidiaries	91,089	(27,710)	(65,055)
Net cash used in operating activities	16,026	(32,412)	(70,767)
Cash flows from investing activities:
Restricted cash	0	0	15,370
Proceeds from principal return on SoFi Loan Note	0	0	5,879
Proceeds from sale of equity method investment	0	91,926	18,460
Proceeds from sale of equity investments without readily determinable fair values	4,585	32,726	0
Purchase of equity method investment	0	(500)	(1,000)
Cash disposed of from deconsolidation of subsidiaries	0	0	0
Net cash (used in) provided by investing activities	4,585	124,152	38,709
Cash flows from financing activities:
Proceeds from exercise of share options	1,107	262	1,430
Proceeds from borrowings	27,000	0	130,000
Cash distribution to shareholders related to acquisition of OPI	(133,665)	0	0
Repayment of borrowings	(12,000)	(10,000)	(100,000)
Proceeds from loan from a related party	0	0	10,692
Net cash provided by (used in) financing activities	(117,558)	(9,738)	42,122
Net increase (decrease) in cash and cash equivalents	(96,947)	82,002	10,064
Cash and cash equivalents at beginning of year	97,697	15,694	5,633
Effect of exchange rate changes	(1)	1	(3)
Cash and cash equivalents at end of year	$ 749	$ 97,697	$ 15,694

Additional Information - Fina_8

Additional Information - Financial Statement Schedule I Condensed Financial Information of Parent Company (Basis for preparation) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Basis Of Preparation [Line Items]
Restricted net assets of Company's subsidiaries, VIE and VIE's subsidiaries	$ 352,535	$ 435,999
Parent Company [Member]
Basis Of Preparation [Line Items]
Restricted net assets of Company's subsidiaries, VIE and VIE's subsidiaries	$ 352,535

DISCONTINUED OPERATIONS (Deta_2

DISCONTINUED OPERATIONS (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Cash and cash equivalents		$ 3,396
Accounts and notes receivable, net		162
Amounts due from related parties		15,036
Prepaid expenses and other current assets		1,957
Current assets classified as discontinued operations	$ 0	20,551
Property and equipment, net		16
Long-term investment		530,624
Other non-current asset		23
Non-current assets classified as discontinued operations	0	530,670
Accounts payable		951
Accrued expenses and other current payables		14,021
Amount due to related parties		10,687
Deferred revenue		56
Income tax payable		925
Long-term debt - current		52,604
Current liabilities classified as discontinued operations	0	79,244
Other non-current liabilities		6,356
Non-current liabilities classified as discontinued operations	$ 0	$ 6,356