Sohu.com Limited (SOHU) 20-F 28 Mar 19 2018 FY Annual report (foreign) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2018shares
Document and Entity Information [Abstract]
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	Sohu.com Ltd
Entity Central Index Key	0001734107
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Trading Symbol	SOHU
Entity Common Stock, Shares Outstanding	39,228,538
Entity Voluntary Filers	No
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 819,713	$ 1,364,096
Restricted cash	5,974	3,928
Short-term investments	1,041,395	818,934
Account and financing receivables, net	281,173	250,468
Prepaid and other current assets (including $32,005 and $31,607, respectively, due from a related party as of December 31, 2017 and 2018)	168,305	192,675
Total current assets	2,316,560	2,630,101
Fixed assets, net	504,998	529,717
Goodwill	53,263	71,565
Long-term investments, net	108,356	90,145
Intangible assets, net	24,118	23,060
Restricted time deposits	244,179	271
Prepaid non-current assets	3,107	4,211
Other assets	43,928	40,169
Total assets	3,298,509	3,389,239
LIABILITIES
Accounts payable (including accounts payable of consolidated variable interest entities ("VIEs") without recourse to the Company of $53,842 and $84,749, respectively, as of December 31, 2017 and 2018)	295,954	288,394
Accrued liabilities (including accrued liabilities of consolidated VIEs without recourse to the Company of $76,883 and $60,555, respectively, as of December 31, 2017 and 2018)	301,915	343,106
Receipts in advance and deferred revenue (including receipts in advance and deferred revenue of consolidated VIEs without recourse to the Company of $46,939 and $43,020, respectively, as of December 31, 2017 and 2018)	124,782	127,758
Accrued salary and benefits (including accrued salary and benefits of consolidated VIEs without recourse to the Company of $8,137 and $7,389, respectively, as of December 31, 2017 and 2018)	112,898	102,087
Tax payables (including tax payables of consolidated VIEs without recourse to the Company of $18,210 and $14,110, respectively, as of December 31, 2017 and 2018)	93,569	96,541
Short-term bank loans (including short-term bank loans of consolidated VIEs without recourse to the Company of nil as of both December 31, 2017 and 2018)	129,677	61,216
Other short-term liabilities (including other short-term liabilities of consolidated VIEs without recourse to the Company of $71,644 and $65,352, respectively, as of December 31, 2017 and 2018, and due to a related party of $31,192 and $32,719, respectively, as of December 31, 2017 and 2018.)	124,085	136,300
Total current liabilities	1,182,880	1,155,402
Long-term accounts payable (including long-term accounts payable of consolidated VIEs without recourse to the Company of nil as of both December 31, 2017 and 2018 )	752	1,157
Long-term bank loans (including long-term bank loans of consolidated VIEs without recourse to the Company of nil as of both December 31, 2017 and 2018)	302,323	122,433
Long-term tax liabilities (including long-term tax liabilities of consolidated VIEs without recourse to the Company of $14,293 and $13,554, respectively, as of December 31, 2017 and 2018)	174,339	249,618
Deferred tax liabilities (including deferred tax liabilities of consolidated VIEs without recourse to the Company of $3,451 and $2,239, respectively, as of December 31, 2017 and 2018)	85,264	43,392
Total long-term liabilities	562,678	416,600
Total liabilities	1,745,558	1,572,002
Commitments and contingencies
SHAREHOLDERS' EQUITY
Ordinary Shares: $0.001 par value per share (75,400 shares authorized; 38,898 shares and 39,229 shares, respectively, issued and outstanding as of December 31, 2017 and 2018)	39	45
Additional paid-in capital	958,883	1,098,455
Treasury stock (5,890 shares and nil, respectively, as of December 31, 2017 and 2018)	0	(143,858)
Accumulated other comprehensive income	24,719	38,212
Accumulated deficit	(394,801)	(242,220)
Total Sohu.com Limited shareholders' equity	588,840	750,634
Noncontrolling interest	964,111	1,066,603
Total shareholders' equity	1,552,951	1,817,237
Total liabilities and shareholders' equity	$ 3,298,509	$ 3,389,239

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Due from a related party	$ 31,607	$ 32,005
Accounts payable	295,954	288,394
Accrued liabilities	301,915	343,106
Receipts in advance and deferred revenue	124,782	127,758
Accrued salary and benefits	112,898	102,087
Tax payables	93,569	96,541
Short-term bank loans	129,677	61,216
Other short-term liabilities	124,085	136,300
Due to a related party	32,719	31,192
Long-term accounts payable	752	1,157
Long-term bank loans	302,323	122,433
Long-term tax liabilities	174,339	249,618
Deferred tax liabilities	$ 85,264	$ 43,392
Ordinary Share, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary Share, shares authorized (in shares)	75,400	75,400
Ordinary Share, shares issued (in shares)	39,229	38,898
Ordinary Share, shares outstanding (in shares)	39,229	38,898
Treasury stock, shares (in shares)	0	5,890
Consolidated VIEs [Member]
Accounts payable	$ 84,749	$ 53,842
Accrued liabilities	60,555	76,883
Receipts in advance and deferred revenue	43,020	46,939
Accrued salary and benefits	7,389	8,137
Tax payables	14,110	18,210
Short-term bank loans	0	0
Other short-term liabilities	65,352	71,644
Long-term accounts payable	0	0
Long-term bank loans	0	0
Long-term tax liabilities	13,554	14,293
Deferred tax liabilities	$ 2,239	$ 3,451

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income /(Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues:
Revenues	$ 1,883,029	$ 1,860,962	$ 1,650,431
Cost of revenues:
Cost of revenues	1,071,721	1,035,166	859,800
Gross profit	811,308	825,796	790,631
Operating expenses:
Product development	441,161	412,173	353,144
Sales and marketing (including expenses generated for a related party of $216, nil and nil, respectively, for 2016, 2017 and 2018)	400,579	413,045	434,780
General and administrative	113,724	122,874	119,841
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions	16,369	86,882	0
Total operating expenses	971,833	1,034,974	907,765
Operating loss	(160,525)	(209,178)	(117,134)
Other income /(expense), net	64,167	6,658	(10,713)
Interest income (including interest income generated from a related party of $1,244, $1,157 and $1,051, respectively, for 2016, 2017 and 2018)	24,079	24,138	22,499
Interest expense (including interest expense generated from a related party of $662, $724, and $519, respectively, for 2016, 2017 and 2018)	(17,538)	(4,088)	(1,356)
Exchange difference	9,026	(14,385)	12,803
Loss before income tax expense /(benefit)	(80,791)	(196,855)	(93,901)
Income tax expense /(benefit)	(13,432)	273,148	21,072
Net income /(loss)	(67,359)	(470,003)	(114,973)
Less: Net income attributable to the noncontrolling interest shareholders	92,723	84,523	109,048
Net loss attributable to Sohu.com Limited	(160,082)	(554,526)	(224,021)
Net loss	(67,359)	(470,003)	(114,973)
Foreign currency translation adjustments	(37,339)	56,250	(73,235)
Change in unrealized gain /(loss) for equity securities with readily determinable fair values	0	12,179	(3,920)
Other comprehensive income /(loss)	(37,339)	68,429	(77,155)
Comprehensive loss	(104,698)	(401,574)	(192,128)
Less: Comprehensive income attributable to noncontrolling interest shareholders	61,376	117,960	78,824
Comprehensive loss attributable to Sohu.com Limited	$ (166,074)	$ (519,534)	$ (270,952)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)	$ (14.27)	$ (5.79)
Shares used in computing basic net loss per share attributable to Sohu.com Limited	38,959	38,858	38,706
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)	$ (14.30)	$ (5.83)
Shares used in computing diluted net loss per share attributable to Sohu.com Limited	38,959	38,858	38,706
Brand advertising [Member]
Revenues:
Revenues	$ 231,945	$ 314,066	$ 447,956
Cost of revenues:
Cost of revenues	184,474	363,592	371,085
Search and search-related advertising [Member]
Revenues:
Revenues	1,022,456	801,199	597,133
Cost of revenues:
Cost of revenues	664,164	412,904	290,158
Subtotal of online advertising [Member]
Revenues:
Revenues	1,254,401	1,115,265	1,045,089
Cost of revenues:
Cost of revenues	848,638	776,496	661,243
Online games [Member]
Revenues:
Revenues	389,788	449,533	395,709
Cost of revenues:
Cost of revenues	60,981	62,775	96,168
Other [Member]
Revenues:
Revenues	238,840	296,164	209,633
Cost of revenues:
Cost of revenues	$ 162,102	$ 195,895	$ 102,389

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income /(Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME /(LOSS) [Abstract]
Revenues from a related party	$ 224	$ 247	$ 1,180
Expenses for a related party	0	0	216
Interest income from a related party	1,051	1,157	1,244
Interest expense from a related party	$ 519	$ 724	$ 662

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	$ (67,359)	$ (470,003)	$ (114,973)
Adjustments to reconcile net loss to net cash provided by operating activities:
Amortization of intangible assets and purchased video content in prepaid expense	59,352	140,881	131,182
Depreciation	93,037	83,114	73,449
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions	16,369	86,882	0
Share-based compensation expense	2,094	41,468	19,120
Other-than-temporary impairment of available-for-sale equity investment	0	5,754	0
Impairment of other intangible assets and other assets	10,797	72,259	22,906
Investment loss /(gain) from equity investments	(11,440)	1,451	2,085
Allowance for doubtful accounts and credit losses	15,660	9,076	7,109
Provision for inventory	2,547	0	0
Loss /(gain) from sale of equity investments	(134)	523	(149)
Change in fair value of financial instruments	(10,857)	(10,447)	(13,133)
Others	(705)	(1,063)	(1,182)
Changes in assets and liabilities, net of acquisition:
Account and financing receivables	(14,827)	(55,061)	62,520
Prepaid and other assets	(23,865)	23,455	15,091
Accounts payable	60,148	33,395	40,273
Receipts in advance and deferred revenue	3,784	1,404	(8,152)
Tax liabilities	(74,058)	263,108	(36,666)
Deferred tax	43,798	(45)	5,268
Accrued liabilities and other short-term liabilities	(20,316)	(38,464)	34,872
Net cash provided by operating activities	84,025	187,687	239,620
Cash flows from investing activities:
Purchase of fixed assets	(101,122)	(78,924)	(105,063)
Purchase of intangible and other assets	(98,255)	(66,393)	(183,791)
Purchase of long-term investments	(20,613)	(7,680)	(20,950)
Return of funds from a third party	5,264	4,928	5,061
Collection of financing receivables	59,967	0	0
Investment in financing receivables	(98,774)	0	0
Proceeds from financial instruments	2,957,984	1,219,986	415,383
Purchase of financial instruments	(3,177,532)	(1,785,012)	(509,357)
Matching loan to a related party	0	0	(18,115)
Proceeds received from sale of equity investment	12,073	0	0
Other cash proceeds /(payments) related to investing activities	1,764	(1,408)	5,182
Net cash used in investing activities	(459,244)	(714,503)	(411,650)
Cash flows from financing activities:
Consideration received from Sogou IPO, net of IPO Transaction Expenses	0	622,131	0
Proceeds from long-term bank loan	251,738	122,433	0
Proceeds from short-term bank loan	74,056	67,785	0
Exercise of share-based awards in subsidiaries	12	494	291
Repayments of loans from banks	(67,011)	(7,684)	(344,500)
Repurchase of Sogou Pre-IPO Class A Ordinary Shares from noncontrolling shareholders	0	(3,190)	0
Matching loan from a related party	0	0	17,041
Distribution of Changyou dividend to noncontrolling interest shareholders	(162,461)	0	0
Other cash proceeds /(payments) related to financing activities	0	6	(766)
Net cash provided by /(used in) financing activities	96,334	801,975	(327,934)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted time deposits	(19,544)	30,226	(46,310)
Reclassification of cash and cash equivalents from /(to) assets held for sale	0	11,684	(11,684)
Net increase /(decrease) in cash, cash equivalents, restricted cash, and restricted time deposits	(298,429)	317,069	(557,958)
Cash, cash equivalents, restricted cash and restricted time deposits at beginning of year	1,368,295	1,051,226	1,609,184
Cash, cash equivalents, restricted cash and restricted time deposits at end of year	1,069,866	1,368,295	1,051,226
Supplemental cash flow disclosures:
Cash paid for income taxes	(53,147)	(43,264)	(25,179)
Cash paid for interest expense	(12,563)	(7,176)	(965)
Barter transactions	28,404	6,110	12,384
Supplemental schedule of non-cash investing activity:
Changes in payables and other liabilities related to fixed assets and intangible assets additions	$ 30,797	$ 56,486	$ 35,470

Consolidated Statement of Chang

Consolidated Statement of Changes in Equity - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings /(Accumulated Deficit) [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2015		$ 1,730,752	$ 45	$ 798,357	$ (143,858)	$ 50,151	$ 536,327	$ 489,730
Share-based compensation expense		19,120	0	2,678	0	0	0	16,442
Settlement/Adjustment of share-based awards in subsidiary		337	0	19,501	0	0	0	(19,164)
Contribution from noncontrolling interest shareholder		0	0	1,333	0	0	0	(1,333)
Disposal of noncontrolling interest		(238)	0	0	0	0	0	(238)
Net income /(loss) attributable to Sohu.com Limited and noncontrolling interest shareholders		(114,973)	0	0	0	0	(224,021)	109,048
Accumulated other comprehensive loss		(77,155)	0	0	0	(46,931)	0	(30,224)
Others		(48)	0	(2)	0	0	0	(46)
Ending balance at Dec. 31, 2016		1,557,795	45	821,867	(143,858)	3,220	312,306	564,215
Consideration received from Sogou IPO, net of IPO Transaction Expenses		622,131	0	278,428	0	0	0	343,703
Share-based compensation expense		41,468	0	827	0	0	0	40,641
Settlement/Adjustment of share-based awards in subsidiary		494	0	(2,755)	0	0	0	3,249
Repurchase of Sogou Pre-IPO Class A Ordinary Shares from noncontrolling shareholders		(3,190)	0	0	0	0	0	(3,190)
Purchase of noncontrolling interest		193	0	88	0	0	0	105
Disposal of noncontrolling interest		(80)	0	0	0	0	0	(80)
Net income /(loss) attributable to Sohu.com Limited and noncontrolling interest shareholders		(470,003)	0	0	0	0	(554,526)	84,523
Accumulated other comprehensive loss		68,429	0	0	0	34,992	0	33,437
Ending balance at Dec. 31, 2017		1,817,237	45	1,098,455	(143,858)	38,212	(242,220)	1,066,603
Impact of adoption of new accounting standards	[1]	0	0	0	0	(7,501)	7,501	0
Share-based compensation expense		2,095	0	(5,559)	0	0	0	7,654
Settlement/Adjustment of share-based awards in subsidiary		1,811	0	9,839	0	0	0	(8,028)
Distribution of Changyou dividend to noncontrolling interest shareholders		(162,461)	0	0	0	0	0	(162,461)
Disposal of a majority-owned subsidiary		(2,113)	0	0	0	0	0	(2,113)
Liquidation of Sohu.com Inc.		0	(6)	(143,852)	143,858	0	0	0
Net income /(loss) attributable to Sohu.com Limited and noncontrolling interest shareholders		(67,359)	0	0	0	0	(160,082)	92,723
Accumulated other comprehensive loss		(37,339)	0	0	0	(5,992)	0	(31,347)
Others		1,080	0	0	0	0	0	1,080
Ending balance at Dec. 31, 2018		$ 1,552,951	$ 39	$ 958,883	$ 0	$ 24,719	$ (394,801)	$ 964,111
[1]	For details see Note 10 - Fair Value Measurements - Financial Instruments Measured at Fair Value - Equity Investments.

The Company and Nature of Opera

The Company and Nature of Operations	12 Months Ended
	Dec. 31, 2018
THE COMPANY AND NATURE OF OPERATIONS [Abstract]
The Company and Nature of Operations	1. THE COMPANY AND NATURE OF OPERATIONS Nature of Operations and Organization Sohu.com Limited was incorporated in the Cayman Islands on May 30, 2003 as a direct wholly-owned subsidiary of Sohu.com Inc., which was incorporated in Delaware in August 1996 and was the ultimate parent company of the Sohu Group (as defined below) until its dissolution on May 31, 2018. On July 17, 2000, Sohu.com Inc. completed an initial public offering (“IPO”) of shares of its common stock on NASDAQ trading under the symbol “SOHU.” On May 31, 2018, pursuant to a proposal for the dissolution of Sohu.com Inc. and adoption of a plan of complete liquidation and dissolution of Sohu.com Inc. that was approved by the stockholders of Sohu.com Inc. at a special meeting of stockholders held on May 29, 2018, Sohu.com Inc. was dissolved, all outstanding shares of the common stock of Sohu.com Inc. were delisted and cancelled, and ADSs representing all outstanding ordinary shares of Sohu.com Limited were distributed on a share-for-share top-tier, The Sohu Group is a leading Chinese online media, search and game service group providing comprehensive online products and services on PCs and mobile devices in China. The Sohu Group, which consists of “Sohu,” which when referred to in this report, unless the context requires otherwise, excludes the businesses and the corresponding subsidiaries and VIEs of Sogou Inc. (“Sogou”) and Changyou.com Limited (“Changyou”), Sogou and Changyou. Sogou and Changyou are the indirect controlled subsidiaries of the Company. Sohu is a leading Chinese language online media content and services provider; Sogou is an innovator in search and a leader in China’s Internet industry; and Changyou is a leading online game developer and operator in China that engages primarily in the development, operation and licensing of online games for PCs and mobile devices. Most of the Sohu Group’s operations are conducted through the Group’s China-based subsidiaries and VIEs. Sogou completed its IPO on the NYSE in November 2017 trading under the symbol “SOGO.” Changyou completed its IPO on NASDAQ in April 2009, trading under the symbol “CYOU.” As Sohu.com Limited, or its predecessor Sohu.com Inc., is the controlling shareholder of both Sogou and Changyou, Sohu.com Limited consolidates Sogou and Changyou in its consolidated financial statements, and recognizes noncontrolling interests reflecting economic interests in Sogou and Changyou held by shareholders other than Sohu.com Limited. The consolidated financial statements of Sohu.com Limited represent the continuation of the financial statements of Sohu.com Inc., reflecting the assets and liabilities, accumulated deficit and other equity balances of Sohu.com Inc. immediately before Sohu.com Inc.’s dissolution on May 31, 2018. Through the operation of Sohu, Sogou and Changyou, the Sohu Group generates online advertising revenues, including brand advertising revenues and search and search-related advertising revenues; online games revenues; and other revenues. Online advertising and online games are the Sohu Group’s core businesses. The principal subsidiaries and VIEs through which the Group conducts its business operations as of December 31, 2018 are described below: Name of Entity Date of Place of Effective Subsidiaries: For Sohu’s Business: Sohu.com (Hong Kong) Limited (“Sohu Hong Kong”) Incorporated on April 19, 2000 Hong Kong 100 % Beijing Sohu New Era Information Technology Co., Ltd. (“Sohu Era”) Incorporated on July 25, 2003 People’s Republic of China 100 % All Honest International Limited (“All Honest”) Incorporated on October 8, 2003 British Virgin Islands 100 % Sohu.com (Search) Limited (“Sohu Search”) Incorporated on October 28, 2005 Cayman Islands 100 % Beijing Sohu New Media Information Technology Co., Ltd. (“Sohu Media”) Incorporated on June 19, 2006 People’s Republic of China 100 % Sohu.com (Game) Limited (“Sohu Game”) Incorporated on February 11, 2008 Cayman Islands 100 % Beijing Sohu New Momentum Information Technology Co., Ltd. (“Sohu New Momentum”) Incorporated on May 31, 2010 People’s Republic of China 100 % Fox Video Investment Holding Limited (“Video Investment”) Incorporated on July 25, 2011 Cayman Islands 100 % Fox Video Limited (“Sohu Video”) Incorporated on July 26, 2011 Cayman Islands 100 % Fox Video (HK) Limited (“Video HK”) Incorporated on September 30, 2011 Hong Kong 100 % Fox Information Technology (Tianjin) Limited (“Video Tianjin”) Incorporated on November 17, 2011 People’s Republic of China 100 % Focus Investment Holding Limited (“Focus Investment”) Incorporated on July 10, 2013 Cayman Islands 100 % Sohu Focus Limited (“Sohu Focus”) Incorporated on July 11, 2013 Cayman Islands 100 % Sohu Focus (HK) Limited (“Focus HK”) Incorporated on July 26, 2013 Hong Kong 100 % For Sogou’s Business: Sogou Inc. (“Sogou”) Incorporated on December 23, 2005 Cayman Islands 33 % Sogou (BVI) Limited (“Sogou BVI”) Incorporated on December 23, 2005 British Virgin Islands 33 % Beijing Sogou Technology Development Co., Ltd. (“Sogou Technology”) Incorporated on February 8, 2006 People’s Republic of China 33 % Sogou Hong Kong Limited (“Sogou HK”) Incorporated on December 12, 2007 Hong Kong 33 % Vast Creation Advertising Media Services Limited (“Vast Creation”) Acquired on November 30, 2011 Hong Kong 33 % Beijing Sogou Network Technology Co., Ltd (“Sogou Network”) Incorporated on March 29, 2012 People’s Republic of China 33 % Sogou Technology Hong Kong Limited (“Sogou Technology HK”) Incorporated on August 25, 2015 Hong Kong 33 % Tianjin Sogou Network Technology Co., Ltd (“Tianjin Sogou Network”) Incorporated on May 18, 2017 People’s Republic of China 33 % Sogou (Shantou) Internet Microcredit Co., Ltd. (“Sogou Microcredit”) Incorporated on November 22, 2017 People’s Republic of China 33 % For Changyou’s Business: Changyou.com Limited (“Changyou”) Incorporated on August 6, 2007 Cayman Islands 67 % Changyou.com (HK) Limited (“Changyou HK”) Incorporated on August 13, 2007 Hong Kong 67 % Beijing AmazGame Age Internet Technology Co., Ltd. (“AmazGame”) Incorporated on September 26, 2007 People’s Republic of China 67 % Beijing Changyou Gamespace Software Technology Co., Ltd. (“Gamespace”) Incorporated on October 29, 2009 People’s Republic of China 67 % Beijing Yang Fan Jing He Information Consulting Co., Ltd. (“Yang Fan Jing He”) Incorporated on April 22, 2010 People’s Republic of China 67 % Beijing Changyou Jingmao Film & Culture Communication Co., Ltd. (“Beijing Jingmao”) Acquired on January 25, 2011 People’s Republic of China 67 % Shanghai Jingmao Culture Communication Co., Ltd. (“Shanghai Jingmao”) Acquired on January 25, 2011 People’s Republic of China 67 % 7Road.com Limited (“7Road”) Incorporated on June 15, 2011 Cayman Islands 67 % 7Road.com HK limited (“7Road HK”) Incorporated on July 6, 2011 Hong Kong 67 % Changyou.com Webgames (HK) Limited (“Changyou HK Webgames”) Incorporated on September 21, 2011 Hong Kong 67 % Shenzhen Brilliant Imagination Technologies Co., Ltd. (“Brilliant Imagination”) Incorporated on April 18, 2014 People’s Republic of China 67 % Beijing Changyou Chuangxiang Software Technology Co., Ltd. (“Changyou Chuangxiang”) Incorporated on November 8, 2016 People’s Republic of China 67 % VIEs: For Sohu’s Business: Beijing Century High-Tech Investment Co., Ltd. (“High Century”) Incorporated on December 28, 2001 People’s Republic of China 100 % Beijing Heng Da Yi Tong Information Technology Co., Ltd. (“Heng Da Yi Tong”) Incorporated on February 7, 2002 People’s Republic of China 100 % Beijing Sohu Internet Information Service Co., Ltd. (“Sohu Internet”) Incorporated on July 31, 2003 People’s Republic of China 100 % Beijing Sohu Donglin Advertising Co., Ltd. (“Donglin”) Incorporated on May 17, 2010 People’s Republic of China 100 % Tianjin Jinhu Culture Development Co., Ltd (“Tianjin Jinhu”) Incorporated on November 24, 2011 People’s Republic of China 100 % Beijing Focus Interactive Information Service Co., Ltd. (“Focus Interactive”) Incorporated on July 15, 2014 People’s Republic of China 100 % Guangzhou Qianjun Network Technology Co., Ltd (“Guangzhou Qianjun”) Acquired on November 25, 2014 People’s Republic of China 100 % For Sogou’s Business: Beijing Sogou Information Service Co., Ltd. Incorporated on December 28, 2005 People’s Republic of China 33 % Chengdu Easypay Technology Co., Ltd. (“Chengdu Easypay”) Incorporated on January 19, 2015 People’s Republic of China 33 % For Changyou’s Business: Beijing Gamease Age Digital Technology Co., Ltd. (“Gamease”) Incorporated on August 23, 2007 People’s Republic of China 67 % Shanghai ICE Information Technology Co., Ltd. (“Shanghai ICE”) Acquired on May 28, 2010 People’s Republic of China 67 % Beijing Guanyou Gamespace Digital Technology Co., Ltd. (“Guanyou Gamespace”) Incorporated on August 5, 2010 People’s Republic of China 67 % Sohu’s Business Brand Advertising Business Sohu’s main business is the brand advertising business, which offers to users, over Sohu’s matrices of Chinese language online media, various content, products and services across multiple Internet-enabled devices such as PCs, mobile phones and tablets. The majority of Sohu’s products and services are provided in China through Sohu Media Portal, Sohu Video and Focus. • Sohu Media Portal. • Sohu Video. • Focus. Revenues generated by the brand advertising business are classified as brand advertising revenues in the Sohu Group’s consolidated statements of comprehensive income. Other Sohu Business Sohu also engages in the other business, which consists primarily of paid subscription services, interactive broadcasting services, and content provided through the platforms of the three main telecommunications operators in China. Revenues generated by Sohu from the other business are classified as other revenues in the Sohu Group’s consolidated statements of comprehensive income. Sogou’s Business Search and Search-related Business The search and search-related business consists primarily of search and search-related advertising services offered by Sogou. Search and search-related advertising services enable advertisers’ promotional links to be displayed on Sogou’s search results pages and other Internet properties and third parties’ Internet properties where the links are relevant to the subject and content of searches and such properties. Sogou’s advertising services expand distribution of advertisers’ promotional links and advertisements by leveraging traffic on third parties’ Internet properties, including Web content, software, and mobile applications. The search and search-related business also benefits from Sogou’s collaboration with Tencent Holdings Limited (together with its subsidiaries, “Tencent”), which provides Sogou access to traffic and content generated from products and services provided by Tencent. Revenues generated by the search and search-related business are classified as search and search-related advertising revenues in the Sohu Group’s consolidated statements of comprehensive income. Other Sogou Business Sogou also offers IVAS, primarily with respect to the operation of Web games and mobile games developed by third parties and the provision of online reading services, and offers other products and services, including smart hardware products. Revenues generated by Sogou from other business are classified as other revenues in the Sohu Group’s consolidated statements of comprehensive income. Initial Public Offering of Sogou On November 13, 2017, Sogou completed its IPO on the NYSE, trading under the symbol “SOGO.” Sogou’s Ordinary Shares are divided into Sogou Class A Ordinary Shares and Sogou Class B Ordinary Shares. Holders of Sogou Class A Ordinary Shares and holders of Sogou Class B Ordinary Shares have identical rights with the exception of voting and conversion rights. Each Sogou Class A Ordinary Share is entitled to one vote per share and is not convertible. Each Sogou Class B Ordinary Share is entitled to ten votes per share and is convertible into one Sogou Class A Ordinary Share at any time. Sogou issued and sold in its IPO 50,643,856 Sogou Class A Ordinary Shares represented by 50,643,856 ADSs, including 5,643,856 Sogou Class A Ordinary Shares represented by 5,643,856 ADSs sold pursuant to the exercise of the underwriters’ over-allotment option. Proceeds to Sogou from the IPO were approximately $622.1 million, after deducting underwriting discounts and commissions and offering expenses. Following the completion of Sogou’s IPO, pursuant to the Voting Agreement among Sohu, Tencent, and Sogou (the “Voting Agreement”) that took effect upon the completion of Sogou’s IPO, Sohu has the right to appoint a majority of Sogou’s Board of Directors, and Sohu continues to consolidate Sogou in Sohu’s financial statements and provide for noncontrolling interests reflecting ordinary shares in Sogou held by shareholders other than Sohu. In the fourth quarter of 2017, Sohu recognized a one-time paid-in Voting Agreement between Sohu, Tencent and Sogou Pursuant to the Voting Agreement, Sohu and Tencent agreed that, subject to certain exceptions, (1) within three years following the completion of Sogou’s IPO, Sohu will vote all Sogou Class B Ordinary Shares and any Sogou Class A Ordinary Shares held by it and Tencent will vote 45,578,896 of its Sogou Class B Ordinary Shares to elect a Board of Directors consisting of seven directors, four of whom will be appointed by Sohu, two of whom will be appointed by Tencent, and the seventh of whom will be Sogou’s then chief executive officer, and (2) after three years following the completion of Sogou’s IPO, Sohu will be entitled to choose to change the size and composition of Sogou’s Board of Directors, subject to Tencent’s right to appoint at least one director. The effect of these provisions is to give Sohu the power to appoint a majority of Sogou’s Board of Directors, and to give Tencent the power to appoint two directors within three years following the completion of Sogou’s IPO and at least one director after three years after the completion of Sogou’s IPO. The Voting Agreement also provides that, subject to certain conditions, for so long as Sohu and Tencent together hold more than 50% of the total voting power of the Sogou Class A Ordinary Shares and the Sogou Class B Ordinary Shares, Sohu or Tencent may remove and replace any director appointed by it. These provisions of the Voting Agreement are also reflected in Sogou’s Amended and Restated Memorandum of Association and Amended and Restated Articles of Association. Due to the additional voting power of the Sogou Class B Ordinary Shares held by Sohu and Tencent, as of the date of this report Sohu holds approximately 33% of the total of Sogou’s outstanding Class A and Class B Ordinary Shares and controls approximately 44% of the total voting power of the combined total of Sogou’s outstanding Class A and Class B Ordinary Shares; Tencent has an indirect shareholding of approximately 38% of the total of Sogou’s outstanding Class A and Class B Ordinary Shares and controls approximately 52% of the total voting power of the combined total of Sogou’s outstanding Class A and Class B Ordinary Shares; and Sohu and Tencent together have the power to decide all matters that may be brought to a vote of Sogou’s shareholders. The Voting Agreement and Sogou’s Amended and Restated Articles of Association also specify that for so long as Sohu or Tencent holds not less than 15% of Sogou’s issued shares (calculated on a fully diluted basis), consent from the holder of 15% or more (either or both of Sohu or Tencent, as the case may be) will be required (1) to amend Sogou’s Amended and Restated Memorandum of Association or Amended and Restated Articles of Association, (2) to make material changes in Sogou’s principal lines of business, (3) to issue any additional Sogou Class B Ordinary Shares, (4) to create any new class or series of shares that is pari passu with or senior to the Sogou Class A Ordinary Shares, (5) for Sogou to approve a liquidation, dissolution or winding up of Sogou, or a merger or consolidation resulting in a change in control, or any disposition of all or substantially all of Sogou’s assets, or (6) for Sogou to enter into any transactions with affiliates of Sohu, other than in the ordinary course of business. Of these corporate actions that are subject to consent of Sohu or Tencent (as applicable), shareholder approval is required under the Companies Law of the Cayman Islands for any amendment of Sogou’s Amended and Restated Memorandum of Association or Amended and Restated Articles of Association, any winding-up The Voting Agreement and Sogou’s Amended and Restated Articles of Association also specify that if at any time Sohu alone holds more than 50% of the total voting power of the Sogou Class A Ordinary Shares and the Sogou Class B Ordinary Shares, the voting arrangements with respect to the size and composition of Sogou’s Board of Directors will be automatically suspended until such time within five years after the completion of Sogou’s IPO as Sohu’s voting power again drops to 50% or less, in which case the original voting arrangements will be reinstated, provided that Tencent will only be required to vote the lower of 45,578,896 Sogou Class B Ordinary Shares held by it or such number as would give Sohu combined voting power of 50.1%. If such a suspension continues after the fifth anniversary of the completion of Sogou’s IPO, the voting arrangements with respect to the size and composition of Sogou’s Board of Directors will terminate. All of the Sogou Class B Ordinary Shares held by Sohu will be converted into Sogou Class A Ordinary Shares if there is a transaction resulting in change of control of Sohu that was not approved by Sohu’s board of directors, if specified competitors of Tencent control Sohu, or if a majority of Sohu’s board of directors consist of nominees of specified competitors of Tencent. The provisions with respect to the size and composition of Sogou’s Board of Directors set out in the Voting Agreement and Sogou’s Amended and Restated Articles of Association will terminate upon occurrence of any such event. Such arrangements will also terminate (1) if Dr. Charles Zhang, the chairman of the board of directors of Sohu and the chief executive officer, both ceases being the chairman of the board of directors of Sohu and ceases being the single largest beneficial owner of Sohu’s outstanding shares; (2) if Sohu transfers 30% or more of the Sogou Class B Ordinary Shares that Sohu held upon the completion of Sogou’s IPO; (3) if Sogou fails to provide irrevocable instructions to the person maintaining Sogou’s register of members to accept instructions from Tencent, under certain circumstances, with respect to the conversion of Sogou Class B Ordinary Shares held by Sohu; (4) or Sogou changes, without Tencent’s consent, the person that maintains Sogou’s register of members; (5) or if Tencent ceases to own any Sogou Class B Ordinary Shares. Under the Voting Agreement, Sohu and Tencent are subject to certain restrictions on transfer of their Sogou Class A and Class B Ordinary Shares. In particular, a transfer of Sogou Class B Ordinary Shares by either Sohu or Tencent, respectively, to any person or entity that is not a direct or indirect wholly-owned subsidiary of Sohu or Tencent, respectively, will cause such Sogou Class B Ordinary Shares to be converted into Sogou Class A Ordinary Shares. Voting Agreement between Sohu, Photon and Sogou Management Sohu may be deemed to have beneficial ownership attributable to shared voting power of Sogou Class A Ordinary Shares beneficially owned by Photon Group Limited (“Photon”), an investment vehicle of the Company’s Chairman and Chief Executive Officer Charles Zhang, Sogou’s chief executive officer Xiaochuan Wang, and certain other members of the Sogou management, as a result of a voting agreement by and among Sohu, Photon, Mr. Wang and the other members of Sogou management, pursuant to which Photon, Mr. Wang, and the other members of Sogou Management have agreed to vote their Sogou Class A Ordinary Shares (not including shares acquired by Mr. Wang in the public market following Sogou’s IPO) to elect Sohu’s designees to Sogou’s Board of Directors. Sogou’s Share Structure As of December 31, 2018, Sogou had a combined total of 397,158,375 Sogou Class A Ordinary Shares and Sogou Class B Ordinary Shares issued and outstanding, consisting of: (i) Sohu: 127,200,000 Sogou Class B Ordinary Shares held by Sohu for its own account, and 3,717,250 Sogou Class A Ordinary Shares held by Sohu for the purpose of issuance upon the exercise of outstanding share-based awards and future share-based awards; (ii) Tencent: 151,557,875 Sogou Class B Ordinary Shares; (iii) Photon: 24,686,863 Sogou Class A Ordinary Shares; and (iv) Shareholders other than Sohu, Tencent, and Photon: 89,996,387 Sogou Class A Ordinary Shares, including Sogou Class A Ordinary Shares represented by Sogou’s ADSs. The total number of Sogou outstanding shares listed above include 5,805,000 Sogou Class A Ordinary Shares that are outstanding for legal purposes, but have been determined to be Sogou treasury stock for accounting purposes. Changyou’s Business Changyou’s business lines consist of the online game business; the platform channel business, which consists primarily of online advertising and IVAS; and the cinema advertising business. Online Game Business Changyou’s online game business offers PC games and mobile games to game players. All of Changyou’s games are operated under the item-based revenue model, meaning that game players can play the games for free, but may choose to pay for virtual items, which are non-physical PC Games PC games are interactive online games that are accessed and played simultaneously by hundreds of thousands of game players through personal computers and require that local client-end client-end Mobile Games Mobile games are played on mobile devices and require an Internet connection. In the second quarter of 2017, Changyou launched a new mobile game, Legacy TLBB (“Legacy TLBB Mobile”), which is operated by Tencent under license from Changyou. For the year ended December 31, 2018, revenues from Legacy TLBB Mobile were $102.6 million, accounting for approximately 26% of Changyou’s online game revenues, approximately 21% of Changyou’s total revenues, and approximately 5% of the Sohu Group’s total revenues. Platform Channel Business Changyou’s platform channel business consists primarily of the operation of the 17173.com Website and RaidCall. Prior to Changyou’s sale of MoboTap Inc. (“MoboTap”) in March 2018, Changyou’s platform channel business also included MoboTap. 17173.com Website The 17173.com Website provides news, electronic forums, online videos and other information services regarding online games to game players in China. All revenues generated by the 17173.com Website are classified as brand advertising revenues. RaidCall RaidCall provides online music and entertainment services, primarily in Taiwan. IVAS revenues generated by RaidCall are classified as other revenues in the Sohu Group’s consolidated statements of comprehensive income. Cinema Advertising Business Changyou also operates a cinema advertising business, which consists primarily of the acquisition from operators of movie theaters, and the sale to advertisers of pre-film Changyou’s Share Structure As of December 31, 2018, Changyou had a combined total of 106,501,420 Changyou Class A and Class B Ordinary Shares issued and outstanding, consisting of: (i) Sohu: 1,500,000 Changyou Class A Ordinary Shares and 70,250,000 Changyou Class B Ordinary Shares; and (ii) Public shareholders: 34,751,420 Changyou Class A Ordinary Shares represented by Changyou’s ADSs. As of December 31, 2018 and the date of this report, Sohu held and holds approximately 67% of the combined total of Changyou’s outstanding ordinary shares, and controlled and controls approximately 95% of the total voting power in Changyou. As Changyou’s controlling shareholder, Sohu consolidates Changyou in its financial statements and provides for noncontrolling interests reflecting ordinary shares in Changyou held by shareholders other than the Company.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Summary of Significant Accounting Policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Accounting Standards The consolidated financial statements have been prepared in accordance with United States of America generally accepted accounting principles (“U.S. GAAP”) to reflect the financial position and results of operations of the Sohu Group. Use of Estimates The preparation of these financial statements requires the Sohu Group to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, costs and expenses, and related disclosures. On an on-going Basis of Consolidation and Recognition of Noncontrolling Interest The Sohu Group’s consolidated financial statements include the accounts of the Company and its subsidiaries and consolidated VIEs. All intra-Group transactions are eliminated. VIE Consolidation The Sohu Group’s VIEs are wholly or partially owned by certain employees of the Group as nominee shareholders. For consolidated VIEs, management made evaluations of the relationships between the Sohu Group and the VIEs and the economic benefit flow of contractual arrangements with the VIEs. In connection with such evaluation, management also took into account the fact that, as a result of such contractual arrangements, the Group controls the shareholders’ voting interests in these VIEs. As a result of such evaluation, management concluded that the Sohu Group is the primary beneficiary of its consolidated VIEs. Noncontrolling Interest Recognition Noncontrolling interests are recognized to reflect the portion of the equity of subsidiaries and VIEs which is not attributable, directly or indirectly, to the controlling shareholders. Currently, the noncontrolling interests in the Sohu Group’s consolidated financial statements primarily consist of noncontrolling interests for Sogou and Changyou. Noncontrolling Interest for Sogou Prior to the completion of Sogou’s IPO in November 2017, the Company controlled the election of a majority of the Board of Directors of Sogou pursuant to a shareholders’ agreement that expired upon completion of the IPO. Following the completion of Sogou’s IPO, pursuant to the Voting Agreement and Sogou’s Third Amended and Restated Articles of Association, the Company still has the right to appoint a majority of Sogou’s Board of Directors. As Sogou’s controlling shareholder, the Company consolidates Sogou in its consolidated financial statements, and recognizes noncontrolling interest reflecting economic interests in Sogou held by shareholders other than it (the “Sogou noncontrolling shareholders”). Sogou’s net income /(loss) attributable to the Sogou noncontrolling shareholders is recorded as noncontrolling interest in its consolidated statements of comprehensive income. Noncontrolling Interest Recognition before Sogou’s IPO Based on the principles of allocation of Sogou’s profit and loss set forth below, Sogou’s cumulative results of operations attributable to the Sogou noncontrolling shareholders, along with changes in shareholders’ equity/(deficit) and adjustments for share-based compensation expense in relation to those share-based awards that were unvested and vested but not yet settled and the Sogou noncontrolling shareholders’ investments in Sogou Series A Preferred Shares outstanding before Sogou’s IPO (“Sogou Pre-IPO Pre-IPO Pre-IPO Pre-IPO Pre-IPO Principles of Allocation of Sogou’s Profit and Loss - By virtue of the terms of the Sogou Pre-IPO Pre-IPO Pre-IPO (i) net losses were allocated to holders of the Sogou Pre-IPO Pre-IPO (ii) additional net losses were allocated to holders of the Sogou Pre-IPO (iii) additional net losses were allocated to the holder of the Sogou Pre-IPO (iv) further net losses were allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou. Net income from Sogou was allocated in the following order before Sogou’s IPO: (i) net income was allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou until their basis in Sogou increased to zero; (ii) additional net income was allocated to the holder of the Sogou Pre-IPO (iii) additional net income was allocated to holders of the Sogou Pre-IPO (iv) further net income was allocated to holders of the Sogou Pre-IPO Pre-IPO (v) further net income was allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou. Noncontrolling Interest Recognition after Sogou’s IPO Sogou’s cumulative results of operations attributable to the Sogou noncontrolling shareholders, based on their share of the economic interest in Sogou, along with changes in shareholders’ equity and adjustment for share-based compensation expense in relation to share-based awards that are unvested and vested but not yet settled and adjustment for changes in the Sohu Group’s ownership percentage in Sogou, are recorded as noncontrolling interest in the Sohu Group’s consolidated balance sheets. Noncontrolling Interest for Changyou As of the date of this report, Sohu holds approximately 67% of the combined total of Changyou’s outstanding ordinary shares, and controls approximately 95% of the total voting power in Changyou. As Changyou’s controlling shareholder, Sohu consolidates Changyou in its consolidated financial statements, and recognizes noncontrolling interest reflecting the economic interest in Changyou held by shareholders other than the Company (the “Changyou noncontrolling shareholders”). Changyou’s net income /(loss) attributable to the Changyou noncontrolling shareholders is recorded as noncontrolling interest in the Sohu Group’s consolidated statements of comprehensive income, based on the noncontrolling shareholders’ share of the economic interest in Changyou. Changyou’s cumulative results of operations attributable to the Changyou noncontrolling shareholders, along with changes in shareholders’ equity, adjustment for share-based compensation expense in relation to those share-based awards which are unvested and vested but not yet settled and adjustment for changes in the Company’s ownership in Changyou, are recorded as noncontrolling interest in the Sohu Group’s consolidated balance sheets. Segment Reporting The Sohu Group’s segments are business units that offer different services and are reviewed separately by the chief operating decision maker (the “CODM”), or the decision making group, in deciding how to allocate resources and in assessing performance. The Group’s CODM is the Company’s Chief Executive Officer. Revenue Recognition Impact of Adoption of ASC 606 On January 1, 2018, the Sohu Group adopted ASC 606, applying the modified retrospective method to contracts that were not completed as of January 1, 2018. The adoption of ASC 606 did not have a material impact on the Company’s accumulated deficit as of January 1, 2018. Results for reporting periods beginning on or after January 1, 2018 are presented under ASC 606, while prior-period amounts are not adjusted and continue to be reported in accordance with the Group’s historic accounting under ASC 605. Under ASC 605, advertising-for-advertising advertising-for-advertising The following table illustrates the effect of the adoption of ASC 606 by presenting a comparison of selected line items from the Group’s consolidated statement of comprehensive income for the year ended December 31, 2018, as actually reported and as they would have been reported under ASC 605 without the adoption of ASC 606 (in thousands, except per share data): As reported Without adoption of Effect of change Higher/(Lower) Revenue-Online advertising-Brand advertising $ 231,945 228,165 3,780 Revenue-Online advertising-Search and search related advertising 1,022,456 1,000,639 21,817 Cost of revenue- Online advertising-Search and search related advertising 664,164 642,920 21,244 Gross profit 811,308 811,308 0 Operating expenses- Sales and marketing 400,579 396,226 4,353 Operating loss (160,525 ) (160,525 ) 0 Income tax expense 13,432 13,432 0 Net loss (67,359 ) (67,359 ) 0 Basic net loss per share attributable to Sohu.com Limited (4.11 ) (4.11 ) 0 Diluted net loss per share attributable to Sohu.com Limited (4.13 ) (4.13 ) 0 The adoption of ASC 606 did not change the Group’s consolidated balance sheet, consolidated statement of cash flows, or consolidated statement of changes in equity as of, or for the year ended, December 31, 2018. Revenues are recognized when control of the promised goods or services is transferred to the Group’s customers, in an amount that reflects the consideration the Group expects to be entitled to in exchange for those goods or services. The recognition of revenues involves certain management judgments, including estimated lives of virtual items purchased by game players, the estimation of the fair value of an advertising-for-advertising licensed-out The following table presents the Group’s revenues disaggregated by products and services: Year Ended December 31, 2018 (in thousands) Year Ended December 31, 2017 (in thousands) Sohu Sogou Changyou Total Sohu Sogou Changyou Total Brand advertising: Sohu Media Portal $ 127,348 0 0 127,348 $ 151,982 0 0 151,982 Sohu Video 53,756 0 0 53,756 79,743 0 0 79,743 Focus 31,144 0 0 31,144 57,245 0 0 57,245 17173.com Website 0 0 19,697 19,697 0 0 25,096 25,096 Search and search related advertising 0 1,022,456 0 1,022,456 0 801,199 0 801,199 Online games: PC games 0 0 236,743 236,743 0 0 239,149 239,149 Mobile games 0 0 151,737 151,737 0 0 208,355 208,355 Other games 0 0 1,308 1,308 0 0 2,029 2,029 Others: Cinema advertising business 0 0 70,202 70,202 0 0 91,419 91,419 Others 61,975 100,589 6,074 168,638 83,758 106,807 14,180 204,745 Total $ 274,223 1,123,045 485,761 1,883,029 $ 372,728 908,006 580,228 1,860,962 As noted above, in accordance with the modified retrospective method upon adoption of ASC 606, prior-period amounts were not adjusted. Online Advertising Revenues Online advertising revenues include revenues from brand advertising services as well as search and search-related advertising services. Certain customers may receive sales rebates, which are accounted for as variable consideration. The Group estimates annual the expected revenue volume from each agent with reference to its historical results. Sales rebates will reduce revenues recognized. The Group recognizes revenue for the amount of fees it receives from its advertisers, after deducting sales rebates and net of value-added tax (“VAT”). The Group believes that there will not be significant changes to its estimates of variable consideration. Brand Advertising Revenues Revenue Recognition of Multiple Performance Obligations The Group’s contracts with customers may include multiple performance obligations. For such arrangements, the Group allocates revenues to each performance obligation based on its relative standalone selling price. The Group generally determines the standalone selling price of each distinct performance obligation based on the prices charged to customers when sold on a standalone basis. Where a standalone selling price is not directly observable, the Group generally estimates the selling price based on the prices at which performance obligations of a similar nature and geography are charged to customers. Most of such contracts have all performance obligations completed within the same quarter. Pricing Model Through PCs and mobile devices, the Group provides advertisement placements to its advertisers on different Internet platforms and in different formats, which include banners, links, logos, buttons, full screen, pre-roll, mid-roll, in-feed Currently the Group has three main types of pricing models, consisting of the Fixed Price model, the Cost Per Impression (“CPM”) model and the Cost Per click (“CPC”) model. (i) Fixed Price model Under the Fixed Price model, a contract is signed to establish a fixed price for the advertising services to be provided. Given that the advertisers benefit from displayed advertisements evenly over the period the advertisements are displayed, the Group recognizes revenue on a straight-line basis over the period of display, provided all revenue recognition criteria have been met. (ii) CPM model Under the CPM model, the unit price for each qualifying display is fixed and stated in the contract with the advertiser. A qualifying display is defined as the appearance of an advertisement, where the advertisement meets criteria specified in the contract. Given that the fees are priced consistently throughout the contract and the unit prices are fixed in accordance with the Group’s pricing practices for similar advertisers, the Group recognizes revenue based on the fixed unit prices and the number of qualifying displays upon their occurrence, provided all revenue recognition criteria have been met. (iii) CPC model Under the CPC model, there is no fixed price for advertising services stated in the contract with the advertiser and the unit price for each click is auction-based. The Group charges advertisers on a per-click Search and Search-related Advertising Revenues Search and search-related services consist primarily of search and search-related advertising services offered by Sogou. Pay-for-click Pay for click services enable advertisers’ promotional links to be displayed on Sogou search result pages and other Internet properties and third parties’ Internet properties where the links are relevant to the subject and content of searches and such properties. For pay for click services, Sogou introduces Internet users to its advertisers through auction-based systems and charges advertisers on a per-click pay-for-click pay-for-click per-click Other Online Advertising Services Other online advertising services mainly consist of displaying advertisers’ promotional links on Sogou’s Internet properties. For time-based advertising services, the Sogou’s performance obligation is satisfied over time when the advertising links are displayed over the contract periods, and revenue is normally recognized on a straight-line basis over the contracted display period. For performance-based advertising services, for example, advertisers are charged based on the times that users download from the displayed links, Sogou’s performance obligation is satisfied at the point in time when the promised performance is completed, and the revenue is recognized upon the completion of the promised performance. Sogou’s online advertising services expand distribution of advertisers’ promotional links and advertisements by leveraging traffic on third parties’ Internet properties, including Web content, software, and mobile applications. Sogou is the principal in such arrangement because its promise to advertisers is to provide the advertising services itself rather than to arrange for the advertising services to be provided by third parties on their Internet properties. Payments made to operators of third-party Internet properties are included in traffic acquisition costs. Online Game Revenues Changyou’s online game revenues are generated primarily from its self-operated and licensed-out in-game Changyou is the principal of its self-operated games. Changyou hosts the games on its own servers and is responsible for the sale and marketing of the games as well as customer service. Accordingly, revenues are recorded gross of revenue sharing-payments to third-party developers and/or mobile APP stores, but net of VAT and discounts to game card distributors where applicable. Changyou obtains revenues from the sale of in-game PC Games Proceeds from Changyou’s self-operated PC games are collected from players and third-party game card distributors through sales of Changyou’s game points on its online payment platform and prepaid game cards. Changyou’s self-operated PC games are either developed in house or licensed from third-party developers. For licensed PC games, Changyou remits a pre-agreed Mobile Games Self-operated Mobile Games For self-operated mobile games, Changyou sells game points to its game players via third-party mobile APP stores. The mobile APP stores in turn pay Changyou proceeds after deducting their share of pre-agreed Changyou’s self-operated mobile games are either developed in house or licensed from or jointly developed with third-party developers. For licensed and jointly-developed mobile games, Changyou remits a pre-agreed Licensed Out Mobile Games Changyou also authorizes third parties to operate its mobile games. Licensed out games mainly include mobile games developed in house, such as Changyou’s mobile game Legacy TLBB Mobile, and mobile games jointly developed with third-party developers. Changyou receives monthly revenue-based royalty payments from the third-party licensee operators. Changyou receives additional up-front pre-agreed Other Revenues Sohu Other revenues attributable to Sohu consist primarily of revenues from paid subscription services, interactive broadcasting services, and content provided through the platforms of the three main telecommunications operators in China. Sogou Other revenues attributable to Sogou are IVAS revenues, which are mainly from the operation of Web games and mobile games developed by third parties and the provision of online reading services, and revenues from other products and services, including smart hardware. Changyou Other revenues attributable to Changyou are primarily from its cinema advertising business and from IVAS. In its cinema advertising business, Changyou provides clients advertising placements in slots that are shown in theaters before the screening of movies. The rights to place advertisements in such advertising slots are granted to Changyou, which takes inventory risk under the contracts Changyou signs with different theaters. Changyou charges its advertising clients fees either on a per advertising-slot basis or a fixed amount for an agreed-upon number of slots during a specified contract period. When delivery of the advertising service is confirmed by the customers by their signing a form, revenues from cinema advertising are recognized based on a percentage of the advertising slots actually delivered or on a straight-line basis over the contract period. As Changyou is considered to be the principal in the arrangements with the theaters, the fees paid to the theaters are recognized as cost of revenues. Changyou provides IVAS primarily through software applications for PCs and mobile devices offered by RaidCall. Prior to March 2018, IVAS revenues also included revenues generated from the Dolphin Browser operated by MoboTap. Revenues from IVAS are recognized during the period the services are rendered or items are consumed under the gross method, as Changyou is the principal obligor for provision of the services. Contract Balances Timing of revenue recognition may differ from the timing of invoicing to customers. Accounts receivable represent amounts invoiced and revenue recognized prior to invoicing, when the Group has satisfied its performance obligations and has the unconditional right to payment. The allowance for doubtful accounts and authorized credits is estimated based upon the Group’s assessment of various factors, including historical experience, the age of the accounts receivable balances, current economic conditions and other factors that may affect the Group’s customers’ ability to pay. Contract assets as of December 31, 2018 were not material. The allowance for doubtful accounts and authorized credits was $16.9 million and $5.7 million, respectively, as of December 31, 2018 and December 31, 2017. Receipts in advance and deferred revenue relate to unsatisfied performance obligations at the end of the period and primarily consist of fees received from game players in the online game business and from advertisers in the search and search-related advertising business. Due to the generally short-term duration of the contracts, the majority of the performance obligations are satisfied in the following reporting period. The amount of revenue recognized that was included in the receipts in advance and deferred revenue balance at the beginning of the period was $111.7 million for the year ended December 31, 2018. There was no significant change in the contract assets and contract liability balances during 2018. Revenue recognized in 2018 from performance obligations related to prior years was not material. Practical Expedients The Group has used the following practical expedients as allowed under ASC 606: (i) The transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied has not been disclosed, as substantially all of the Group’s contracts have a duration of one year or less. (ii) Payment terms and conditions vary by contract type, although terms generally include a requirement of prepayment or payment within one year or less. In instances where the timing of revenue recognition differs from the timing of invoicing, the Group has determined that its contracts generally do not include a significant financing component. (iii) The Group applied the portfolio approach in determining the commencement date of consumption and the estimated lives of virtual items for the recognition of games revenue, given that the effect of applying a portfolio approach to a group game players’ behaviors would not differ materially from considering each one of them individually. (iv) The Group generally expenses sales commissions when incurred because the amortization period would be one year or less. These costs are recorded within sales and marketing expenses. Cost of Revenues Cost of Online Advertising Revenues Cost of online advertising revenues includes cost of revenues from brand advertising services as well as cost of revenues from search and search-related services. Cost of Brand Advertising Revenues Cost of brand advertising revenues mainly consists of content and license costs, salary and benefits expenses, and bandwidth leasing costs. For self-developed video content, production costs incurred in excess of the amount of revenue contracted for are expensed as incurred. Cost of Search and Search-related Advertising Revenues Cost of search and search-related advertising revenues mainly consists of traffic acquisition costs, bandwidth leasing costs, depreciation expenses, salary and benefits expenses, and share-based compensation expense. Traffic acquisition costs consist primarily of payments to third parties that direct search queries of the users to Internet properties of Sogou or distribute Sogou advertisers’ promotional links through such third parties’ Internet properties. The traffic acquisitions costs for such arrangements consist primarily of fees that Sogou pays to the third parties based on an agreed-upon unit price and revenue-sharing payments that Sogou makes to such third parties based on an agreed-upon Cost of Online Game Revenues Cost of online game revenues mainly consists of revenue-sharing payments, salary and benefits expenses, bandwidth leasing costs, content and license costs, tax surcharges, depreciation and amortization expenses, and other direct costs. Cost of Other Revenues Cost of other revenues mainly consists of payments to theaters for pre-film Product Development Expenses Product development expenses mainly consist of salary and benefits expenses, technical service fees, content and license costs, facilities expenses, and depreciation and amortization expenses. These expenses are incurred for the enhancement and maintenance of the Sohu Group’s Internet platforms as well as for its products and services. The development costs of online games are expensed as incurred, including the development costs of online games prior to the establishment of technological feasibility and maintenance costs after the online games are available for marketing. Sales and Marketing Expenses Sales and marketing expenses mainly consist of advertising and promotional expenses, salary and benefits expenses, travelling and entertainment expenses, and facilities expenses. Advertising and promotional expenses generally represent the expenses of promotions to create or stimulate a positive image of the Sohu Group or a desire to subscribe for the Group’s products and services. Advertising and promotional expenses are expensed as incurred. General and Administrative Expenses General and administrative expenses mainly consist of salary and benefits expenses, professional fees, bad debts, travelling and entertainment expenses, depreciation and amortization expenses, and facilities expenses Share-based Compensation Expense Sohu (excluding Sohu Video), Sogou, Changyou, and Sohu Video have incentive plans for the granting of share-based awards, including share options and restricted share units, to members of the boards of directors, management and other key employees. For share-based awards for which a grant date has occurred, share-based compensation expense is recognized as costs and expenses in the consolidated statements of comprehensive income based on the fair value of the related share-based awards on their grant dates. For share-based awards for which the service inception date precedes the grant date, share-based compensation expense is recognized as costs and expenses in the consolidated statements of comprehensive income beginning on the service inception date and is re-measured Sohu (excluding Sohu Video), Sogou, and Changyou Share-based Awards Sohu (excluding Sohu Video) Share-based Awards In determining the fair values of share options granted by Sohu (excluding Sohu Video) as share-based awards, the public market price of the underlying shares at each reporting date was used, and a binomial valuation model was applied. In determining the fair value of restricted share units granted, the public market price of the underlying shares on the grant dates was applied. Upon the dissolution of Sohu.com Inc. on May 31, 2018, Sohu.com Limited assumed all then existing obligations of Sohu.com Inc. with respect to equity incentive awards that had been granted under Sohu.com Inc.’s Amended and Restated 2010 Stock Incentive Plan (the “Sohu 2010 Stock Incentive Plan”) and remained outstanding, and such awards were converted into the right to receive upon exercise or settlement Sohu.com Limited’s ordinary shares under the Sohu.com Limited 2018 Share Incentive Plan (the “Sohu 2018 Share Incentive Plan”) rather than shares of the common stock of Sohu.com Inc., subject to the other terms of such outstanding awards. Options for the purchase of Sohu.com Limited’s ordinary shares, including options converted from those contractually granted under the Sohu 2010 Stock Incentive Plan, are subject to vesting in four equal installments over a period of four years, with each installment vesting upon satisfaction of a service period requirement and certain subjective performance targets. Under ASC 718-10-25, 718-10-55, re-measured Sogou Share-based Awards In determining the fair value of share options granted by Sogou as share-based awards, a binomial valuation model was applied. The determination of the fair value is affected by the fair value of the ordinary shares as well as assumptions regarding a number of complex and subjective variables, including risk-free interest rates, exercise multiples, expected forfeiture rates, expected share price volatility rates, and expected dividends. Before the completion of Sogou’s IPO, the fair values of the ordinary shares were assessed using the income approach/discounted cash flow method or based on the mid-point 505-50 Changyou Share-based Awards In determining the fair value of ordinary shares and restricted share units granted by Changyou as share-based awards in 2008, the income approach /discounted cash flow method with a discount for lack of marketability was applied, given that the shares underlying the awards were not publicly traded at the time of grant. Changyou’s 2008 Share Incentive Plan expired in August 2018 and is no longer available for granting new share-based awards. In determining the fair value of restricted share units granted after Changyou’s IPO, the public market price of the underlying shares on the grant dates was applied. Options for the purchase of Changyou Class A ordinary shares contractually granted under the Changyou 2014 Share Incentive Plan are subject to vesting in four equal installments over a period of four years, with each installment vesting upon satisfaction of a service period requirement and certain subjective performance targets. Under ASC 718-10-25, 718-10-55, re-measured Compensation Expense Recognition For options and restricted share units granted with respect to Sohu (excluding Sohu Video) shares and Changyou shares, compensation expense is recognized on an accelerated basis upon the requisite service period and certain subjective performance targets being met. For share options granted with respect to Sogou shares, compensation expense is recognized over the estimated period during which the service period requirement and performance target will be met, which is usually within one year, or, after the performance target of Sogou’s completion of an IPO was met upon the completion of Sogou’s IPO on November 13, 2017, on an accelerated basis over the requisite service period, or, for options with only service period requirement, on an accelerated basis over the requisite service period. For Tencent restricted share units that Tencent had granted to employees who transferred to Sogou with the Soso search and search-related businesses, compensation expense is recognized by Sogou on an accelerated basis over the requisite service period, and the fair value of the share-based compensation is re-measured Sohu Video Share-based Awards On January 4, 2012, Sohu Video, the holding entity of Sohu’s video division, adopted a 2011 Share Incentive Plan (the “Video 2011 Share Incentive Plan”) which provides for the issuance of up to 25,000,000 ordinary shares of Sohu Video (representing approximately 10% of the outstanding Sohu Video shares on a fully-diluted basis) to management and key employees of the video division and to Sohu management. As of December 31, 2018, grants of options for the purchase of 16,368,200 ordinary shares of Sohu Video had been contractually made, of which options for the purchase of 4,972,800 ordinary shares were vested. For purposes of ASC 718-10-25, 718-10-55, re-measured, re-measure, Taxation PRC Corporate Income Taxes Income taxes are accounted for using an asset and liability approach which requires the recognition of income taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Group’s financial statements or tax returns. Deferred income taxes are determined based on the differences between the accounting basis and the tax basis of assets and liabilities and are measured using the currently enacted tax rates and laws. Deferred tax assets are reduced by a valuation allowance, if based on available evidence, it is considered that it is more likely than not that some portion of or all of the deferred tax assets will not be realized. In making such determination, the Group considers factors including future reversals of existing taxable temporary differences, future profitability, and tax planning strategies. If events were to occur in the future that would allow the Group to realize more of its deferred tax assets than the presently recorded net amount, an adjustment would be made to the deferred tax assets that would increase income for the period when those events occurred. If events were to occur in the future that would require the Group to realize less of its deferred tax assets than the presently recorded net amount, an adjustment would be made to the valuation allowance against deferred tax assets that would decrease income for the period when those events occurred. Significant management judgment is required in determining income tax expense and deferred tax assets and liabilities. The Group’s deferred tax assets are related to net operating losses and temporary differences between accounting basis and tax basis for its China-Based Subsidiaries and VIEs, which are subject to corporate income tax in the PRC under the PRC Corporate Income Tax Law (the “CIT Law”). PRC Withholding Tax on Dividends The CIT Law imposes a 10% withholding income tax on dividends distributed by foreign invested enterprises in the PRC to their immediate holding companies outside Mainland China. A lower withholding tax rate may be applied if there is a tax treaty between Mainland China and the jurisdiction of the forei

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2018
SEGMENT INFORMATION [Abstract]
Segment Information	3. SEGMENT INFORMATION The Sohu Group’s segments are business units that offer different services and are reviewed separately by the CODM, or the decision making group, in deciding how to allocate resources and in assessing performance. The Group’s CODM is the Company’s Chief Executive Officer. There are three segments in the Group, consisting of the Sohu segment, the Sogou segment, and the Changyou segment. The following tables present summary information by segment (in thousands): Year Ended December 31, 2016 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 468,515 $ 660,408 $ 525,385 $ (3,877 ) $ 1,650,431 Segment cost of revenues (391,417 ) (302,565 ) (165,779 ) 327 (859,434 ) Segment gross profit 77,098 357,843 359,606 (3,550 ) 790,997 SBC (2) in cost of revenues (164 ) (171 ) (31 ) 0 (366 ) Gross profit 76,934 357,672 359,575 (3,550 ) 790,631 Operating expenses: Product development (3) (96,815 ) (132,749 ) (118,738 ) 4,342 (343,960 ) Sales and marketing (1) (3) (259,800 ) (121,303 ) (55,971 ) 4,688 (432,386 ) General and administrative (3) (47,804 ) (19,308 ) (45,642 ) 89 (112,665 ) SBC (2) in operating expenses (1,703 ) (8,680 ) (8,371 ) 0 (18,754 ) Total operating expenses (406,122 ) (282,040 ) (228,722 ) 9,119 (907,765 ) Operating profit /(loss) (329,188 ) 75,632 130,853 5,569 (117,134 ) Other income /(expense) (3) 5,360 (26,027 ) 15,523 (5,569 ) (10,713 ) Interest income (4) 8,879 5,198 21,490 (13,068 ) 22,499 Interest expense (4) (10,103 ) 0 (4,321 ) 13,068 (1,356 ) Exchange difference 2,349 5,346 5,108 0 12,803 Income /(loss) before income tax benefit /(expense) (322,703 ) 60,149 168,653 0 (93,901 ) Income tax benefit /(expense) 538 (27 ) (21,583 ) 0 (21,072 ) Net income /(loss) $ (322,165 ) $ 60,122 $ 147,070 $ 0 $ (114,973 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income/ (expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment. Year Ended December 31, 2017 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 374,696 $ 908,357 $ 580,261 $ (2,352 ) $ 1,860,962 Segment cost of revenues (414,526 ) (456,861 ) (163,713 ) 132 (1,034,968 ) Segment gross profit (39,830 ) 451,496 416,548 (2,220 ) 825,994 SBC (2) in cost of revenues 415 (540 ) (73 ) 0 (198 ) Gross profit (39,415 ) 450,956 416,475 (2,220 ) 825,796 Operating expenses: Product development (3) (113,590 ) (156,359 ) (124,869 ) 6,192 (388,626 ) Sales and marketing (1) (3) (199,304 ) (152,121 ) (59,705 ) 4,000 (407,130 ) General and administrative (3) (44,563 ) (25,407 ) (37,218 ) 130 (107,058 ) Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions 0 0 (86,882 ) 0 (86,882 ) SBC (2) in operating expenses (765 ) (27,193 ) (17,320 ) 0 (45,278 ) Total operating expenses (358,222 ) (361,080 ) (325,994 ) 10,322 (1,034,974 ) Operating profit /(loss) (397,637 ) 89,876 90,481 8,102 (209,178 ) Other income /(expense) (3) 4,694 692 9,374 (8,102 ) 6,658 Interest income (4) 7,344 9,126 32,319 (24,651 ) 24,138 Interest expense (4) (24,367 ) 0 (4,372 ) 24,651 (4,088 ) Exchange difference (2,107 ) (7,082 ) (5,196 ) 0 (14,385 ) Income /(loss) before income tax expense (412,073 ) 92,612 122,606 0 (196,855 ) Income tax expense (217,959 ) (14,422 ) (40,767 ) 0 (273,148 ) Net income /(loss) $ (630,032 ) $ 78,190 $ 81,839 $ 0 $ (470,003 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou, and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income/ (expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment. Year Ended December 31, 2018 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 274,670 $ 1,124,158 $ 485,763 $ (1,562 ) $ 1,883,029 Segment cost of revenues (218,184 ) (692,801 ) (160,859 ) 54 (1,071,790 ) Segment gross profit 56,486 431,357 324,904 (1,508 ) 811,239 SBC (2) in cost of revenues 707 (669 ) 31 0 69 Gross profit 57,193 430,688 324,935 (1,508 ) 811,308 Operating expenses: Product development (3) (123,743 ) (191,426 ) (126,593 ) 6,733 (435,029 ) Sales and marketing (1) (3) (203,307 ) (144,867 ) (54,800 ) 2,800 (400,174 ) General and administrative (3) (48,664 ) (36,177 ) (33,622 ) 367 (118,096 ) Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions 0 0 (16,369 ) 0 (16,369 ) SBC (2) in operating expenses 4,940 (13,535 ) 6,430 0 (2,165 ) Total operating expenses (370,774 ) (386,005 ) (224,954 ) 9,900 (971,833 ) Operating profit /(loss) (313,581 ) 44,683 99,981 8,392 (160,525 ) Other income /(expense) (3) 345,416 41,489 22,879 (345,617 ) 64,167 Interest income (4) 14,001 8,037 34,409 (32,368 ) 24,079 Interest expense (4) (39,709 ) 0 (10,197 ) 32,368 (17,538 ) Exchange difference 1,981 5,725 1,320 0 9,026 Income /(loss) before income tax expense 8,108 99,934 148,392 (337,225 ) (80,791 ) Income tax benefit /(expense) 79,052 (1,153 ) (64,467 ) 0 13,432 Net income /(loss) $ 87,160 $ 98,781 $ 83,925 $ (337,225 ) $ (67,359 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou, and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of the distribution by Changyou of a dividend to Sohu in 2018 and leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income /(expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment. As of December 31, 2017 Sohu Sogou Changyou Eliminations Consolidated Cash and cash equivalents $ 98,750 $ 694,207 $ 571,139 $ 0 $ 1,364,096 Accounts receivable, net 86,801 72,117 91,636 (86 ) 250,468 Fixed assets, net 200,561 139,209 189,947 0 529,717 Total assets (1) $ 1,124,759 $ 1,321,036 $ 1,922,023 $ (978,579 ) $ 3,389,239 Note (1): The elimination for segment assets mainly consists of elimination of intra-Group loans between Sohu and Changyou, and elimination of long-term investments in subsidiaries and consolidated VIEs. As of December 31, 2018 Sohu Sogou Changyou Eliminations Consolidated Cash and cash equivalents $ 180,004 $ 185,175 $ 454,534 $ 0 $ 819,713 Account and financing receivables, net 78,383 145,401 57,389 0 281,173 Fixed assets, net 186,758 147,495 170,745 0 504,998 Total assets (1) $ 1,319,490 $ 1,462,844 $ 1,965,484 $ (1,449,309 ) $ 3,298,509 Note (1): The elimination for segment assets mainly consists of elimination of intra-Group loans between Sohu and Changyou, and elimination of long-term investments in subsidiaries and consolidated VIEs.

Share-based Compensation Expens

Share-based Compensation Expense	12 Months Ended
	Dec. 31, 2018
SHARE-BASED COMPENSATION EXPENSE [Abstract]
Share-based Compensation Expense	4. SHARE-BASED COMPENSATION EXPENSE Sohu (excluding Sohu Video), Sogou, Changyou, and Sohu Video have incentive plans for the granting of share-based awards, including share options and restricted share units, to members of the boards of directors, management and other key employees. Share-based compensation expense was recognized in costs and expenses for the years ended December 31, 2016, 2017 and 2018 as follows (in thousands): Year Ended December 31, Share-based compensation expense 2016 2017 2018 Cost of revenues $ 366 $ 198 $ (69 ) Product development expenses 9,184 23,547 6,131 Sales and marketing expenses 2,394 5,915 405 General and administrative expenses 7,176 15,817 (4,372 ) $ 19,120 $ 45,477 $ 2,095 Share-based compensation expense was recognized for share awards of Sohu (excluding Sohu Video), Sogou, Changyou and Sohu Video as follows (in thousands): Year Ended December 31, Share-based compensation expense 2016 2017 2018 For Sohu (excluding Sohu Video) share-based awards $ 2,761 $ 652 $ (5,100 ) For Sogou share-based awards (1) 8,802 27,729 14,204 For Changyou share-based awards 8,402 17,394 (6,461 ) For Sohu Video share-based awards (845 ) (298 ) (548 ) $ 19,120 $ 45,477 $ 2,095 The negative amounts in the tables above resulted from re-measured Note (1): Compensation expense for Sogou share-based awards also includes compensation expense for Tencent restricted share units that Tencent had granted to employees who transferred to Sogou with the Soso search and search-related businesses. There was no capitalized share-based compensation expense for the years ended December 31, 2018, 2017 and 2016.

Advertising and Promotional Exp

Advertising and Promotional Expenses, included in Sales and Marketing Expenses	12 Months Ended
	Dec. 31, 2018
ADVERTISING AND PROMOTIONAL EXPENSES, INCLUDED IN SALES AND MARKETING EXPENSES [Abstract]
Advertising and Promotional Expenses, included in Sales and Marketing Expenses	5. ADVERTISING AND PROMOTIONAL EXPENSES, INCLUDED IN SALES AND MARKETING EXPENSES Advertising and promotional expenses are included in sales and marketing expenses, and generally represent the expenses of promotions to create or stimulate a positive image of the Sohu Group or a desire to subscribe for the Group’s products and services. Advertising expenses are expensed as incurred. For the years ended December 31, 2018, 2017 and 2016, advertising and promotional expenses recognized in the consolidated statements of comprehensive income were $239.0 million, $249.7 million and $270.2 million, respectively.

Other Income _(Expense), net

Other Income /(Expense), net	12 Months Ended
	Dec. 31, 2018
OTHER INCOME /(EXPENSE), NET [Abstract]
Other Income /(Expense), net	6. OTHER INCOME /(EXPENSE), NET The following table summarizes the Sohu Group’s other income /(expense) (in thousands): Year Ended December 31, 2016 2017 2018 Gain from the changes in fair value of financial instruments (1) 13,133 6,665 40,054 Investment income /(expense) (2) (1,908 ) (2,051 ) 14,565 Government grant 2,112 2,166 5,460 Donations (3) (27,982 ) (218 ) (70 ) Write-off of unpaid long-term accounts payable 0 2,031 0 Impairment loss on available-for-sale 0 (5,754 ) 0 Others 3,932 3,819 4,158 $ (10,713 ) $ 6,658 $ 64,167 Note (1): The increase for 2018 compared to 2017 mainly consisted of $33.4 million in income earned from investments in financial instruments. Note (2): The increase for 2018 compared to 2017 mainly consisted of $17.8 million in investment income recognized in the third quarter of 2018 by Sogou due to the observable change in the price of Zhihu Technology Limited (“Zhihu”) after the adoption of ASU 2016-01, Note (3): In the second quarter of 2016, the Sohu Group recognized a one-time Note (4): Before the adoption of ASU 2016-01, available-for-sale

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2018
BALANCE SHEET COMPONENTS [Abstract]
Balance Sheet Components	7. BALANCE SHEET COMPONENTS (IN THOUSANDS) As of December 31, 2017 2018 Account and financing receivables, net Accounts receivable $ 256,131 251,853 Financing receivables 0 46,238 Allowance for doubtful accounts and credit losses (5,663 ) (16,918 ) $ 250,468 281,173 The following table presents the movement of allowances for doubtful accounts and credit losses for the years of 2016, 2017 and 2018: Balance at the Additional provision Write-offs Exchange Balance at the 2016 3,976 7,109 (5,992 ) (252 ) 4,841 2017 4,841 9,076 (8,634 ) 380 5,663 2018 5,663 15,659 (3,848 ) (556 ) 16,918 As of December 31, 2017 2018 Prepaid and other current assets Matching loan due from a related party (See Note 8) $ 32,005 $ 31,607 Prepaid content and license 35,442 30,033 Prepaid taxes 35,551 30,524 Receivables from third party payment service providers 367 14,012 Prepaid cost of revenue 14,782 13,794 Inventory 4,730 12,726 Prepaid rental deposit 9,314 9,287 Receivables from third party payment platforms 3,350 8,844 Interest receivable from short term investments 2,515 3,645 Prepaid office rent and facilities expenses 3,265 3,025 Employee advances 4,109 2,275 Prepaid advertising and promotion fees 3,371 230 Loans to third parties 28,544 0 Due from 7Road 5,344 0 Others 9,986 8,303 $ 192,675 $ 168,305 Prepaid non-current Prepaid PRC income tax for the sale of assets associated with 17173.com by Sohu to Changyou $ 4,020 $ 2,870 Others 191 237 $ 4,211 $ 3,107 Other short-term liabilities Contract deposits from advertisers $ 29,078 $ 40,073 Matching loans due to a related party (See Note 8) 31,192 32,719 Deposits related to Focus 29,889 21,648 Donation payable 7,652 0 Consideration payable for equity investment 6,427 5,960 Depository payable reimbursement 0 4,985 Early exercise of Sogou share options for trust arrangements 4,503 2,702 Accrued liabilities to suppliers 6,725 3,288 Government grant 765 0 Foreign exchange forward contracts 715 0 Others 19,354 12,710 $ 136,300 $ 124,085 Receipts in advance and deferred revenue Receipts in advance relating to: brand advertising business $ 12,858 $ 10,069 search and search-related business 66,223 65,465 online game business 18,498 19,014 others business 5,327 3,602 Total receipts in advance 102,906 98,150 Deferred revenue 24,852 26,632 $ 127,758 $ 124,782

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2018
RELATED PARTY TRANSACTIONS [Abstract]
Related Party Transactions	8. RELATED PARTY TRANSACTIONS Under an agreement between Sohu and Fox Financial Technology Group Limited (“Fox Financial,” formerly known as “SoEasy Internet Finance Group Limited”) entered into in August 2014, Sohu invested $4.8 million and $16.1 million, respectively, in Fox Financial in August 2014 and April 2015. In February 2016, Sohu invested an additional $10.5 million in Fox Financial, see Note 10 - Fair Value Measurements - Financial Instruments Measured at Fair Value - Equity Investments. Changyou’s Loan Arrangements with Fox Financial Commencing in April 2015, certain subsidiaries of Changyou and certain subsidiaries of Fox Financial entered into a series of loan agreements pursuant to which the subsidiaries of Changyou are entitled to draw down HK dollar-denominated or U.S. dollar-denominated loans from the Fox Financial subsidiaries and the Fox Financial subsidiaries are entitled to draw down equivalent RMB-denominated As of December 31, 2017, Changyou had U.S. dollar-denominated loans payable to Fox Financial in a total amount of approximately $29.8 million, and RMB-denominated In December 2018, Changyou entered into a supplemental agreement with Fox Financial pursuant to which all accrued and unpaid interest on the loans as of December 31, 2018 was added to the principal of the corresponding loans. As of December 31, 2018, Changyou had U.S. dollar-denominated loans payable to Fox Financial in a total amount of approximately $32.7 million, and RMB-denominated

Intra-Group Loan and Share Pled

Intra-Group Loan and Share Pledge Agreement	12 Months Ended
	Dec. 31, 2018
INTRA-GROUP LOAN AND SHARE PLEDGE AGREEMENT [Abstract]
Intra-Group Loan and Share Pledge Agreement	9. INTRA-GROUP LOAN AND SHARE PLEDGE AGREEMENT On October 24, 2016, Sohu Media, a subsidiary of the Company, entered into a loan agreement (the “Loan Agreement”) with AmazGame, a subsidiary of Changyou, pursuant to which Sohu Media may borrow from time to time from AmazGame up to RMB1.0 billion (or approximately $145.7 million). Principal amounts outstanding under the Loan Agreement bear interest at an annual rate of 6%. The outstanding principal of each advance will be due one year from the date of the advance, subject to extension for an additional year with the consent of AmazGame. In December 2016, March 2017 and April 2017, Sohu Media received RMB500.0 million (or approximately $72.9 million), RMB200.0 million (or $29.1 million) and RMB300.0 million (or $43.7 million), respectively, from AmazGame. As of December 31, 2017, the total outstanding balance of the loan was RMB1.0 billion (or $153.0 million). In January 2018, Sohu Media entered into a supplementary agreement with AmazGame and Video Tianjin, a subsidiary of the Company, pursuant to which Sohu Media assigned and transferred the entire principal amount outstanding and all the related rights and obligations under the Loan Agreement to Video Tianjin. In December 2018, Video Tianjin and AmazGame entered into an agreement extending the due date of each advance for an additional year. As of December 31, 2018, the total outstanding balance of the loan was RMB1.0 billion (or $145.7 million). The intra-Group loan has been eliminated upon consolidation. On October 24, 2016, Sohu.com (Game) Limited (“Sohu Game”), a Cayman Islands company that is an indirect subsidiary of Sohu and is the direct parent of Changyou, and Changyou entered into a share pledge agreement (the “Share Pledge Agreement”) pursuant to which Sohu Game pledged to Changyou Class B ordinary shares of Changyou held by Sohu Game. The number of Changyou Class B ordinary shares pledged by Sohu Game to Changyou is subject to upward adjustment from time to time while amounts are outstanding under the Loan Agreement if the price of Changyou’s ADSs on the NASDAQ Global Select Market drops for at least 10 consecutive trading days by an amount of 20% or more from such price as of the date of the Share Pledge Agreement, and is subject to further upward adjustment in the event of any additional incremental drops of 20% or more in the price of Changyou’s ADSs during 10 consecutive trading days. The share pledge agreement gives Changyou the right to apply the outstanding principal and accrued interest on the loan to the repurchase of Changyou Class B ordinary shares from Sohu Game in the event that such principal and interest under the Loan Agreement are not paid when due. As of December 31, 2018, the number of Class B ordinary shares pledged by Sohu Game to Changyou was 21,847,751.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
FAIR VALUE MEASUREMENTS [Abstract]
Fair Value Measurements	10. FAIR VALUE MEASUREMENTS Fair Value of Financial Instruments The Sohu Group’s financial instruments consist primarily of cash equivalents, short-term investments, accounts receivable, prepaid and other current assets, long-term investments, restricted time deposits, accounts payable, accrued liabilities, receipts in advance and deferred revenue, short-term bank loans, other short-term liabilities, long-term accounts payable and long-term bank loans. U.S. GAAP establishes a three-tier hierarchy to prioritize the inputs used in the valuation methodologies in measuring the fair value of financial instruments. This hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three-tier fair value hierarchy is: Level 1 - observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 - include other inputs that are directly or indirectly observable in the market place. Level 3 - unobservable inputs which are supported by little or no market activity. Financial Instruments Measured at Fair Value The following table sets forth the financial instruments, measured at fair value, by level within the fair value hierarchy as of December 31, 2017 (in thousands): Fair value measurements at reporting date using Items As of Quoted Prices Significant Significant Cash equivalents $ 1,136,892 $ 0 $ 1,136,892 $ 0 Short-term investments 818,934 0 818,934 0 Equity investments with readily determinable fair values 21,307 21,307 0 0 Foreign exchange forward contracts recognized in other short-term liabilities 715 0 715 0 The following table sets forth the financial instruments, measured at fair value by level within the fair value hierarchy, as of December 31, 2018 (in thousands): Fair value measurements at reporting date using Items As of Quoted Prices Significant Significant Cash equivalents $ 595,702 $ 0 $ 595,702 $ 0 Short-term investments 1,041,395 0 1,041,395 0 Restricted time deposits 244,179 0 244,179 0 Equity investments with readily determinable fair values 6,790 6,790 0 0 Cash Equivalents The Sohu Group’s cash equivalents mainly consist of time deposits with original maturities of three months or less, notice deposits, and highly liquid investments that are readily convertible to known amounts of cash. The fair values of cash equivalents are determined based on the pervasive interest rates in the market. The Group classifies the valuation techniques that use the pervasive interest rates input as Level 2 of fair value measurements. Generally, there are no quoted prices in active markets for identical cash equivalents at the reporting date. In order to determine the fair value, the Group must use the discounted cash flow method and observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Short-term Investments In accordance with ASC 825, for investments in financial instruments with a variable interest rate indexed to performance of underlying assets, the Sohu Group elected the fair value method at the date of initial recognition and carried these investments at fair value. Changes in the fair value are reflected in the consolidated statements of comprehensive income as other income /(expense). To estimate fair value, the Group refers to the quoted rate of return provided by banks at the end of each period using the discounted cash flow method. The Group classifies the valuation techniques that use these inputs as Level 2 of fair value measurements. As of December 31, 2018 and December 31, 2017, the Sohu Group’s investment in these financial instruments was $1.0 billion and $818.9 million, respectively. The investment instruments were issued by commercial banks in China, and have a variable interest rate indexed to performance of underlying assets. Since these investments’ maturity dates are within one year, they are classified as short-term investments. For the year ended December 31, 2018 and 2017, the Sohu Group recorded a gain from changes in the fair value of short-term investments in the amounts of $40.3 million and $13.9 million in the consolidated statements of comprehensive income, respectively. Foreign Exchange Forward Contracts In September 2016 and January 2017, Changyou entered into foreign exchange forward contracts with banks in aggregate notional amounts of $100 million and $50 million, respectively. Changyou entered into such foreign exchange forward contracts in compliance with its risk management policy for the purpose of eliminating the negative impact on earnings and equity resulting from fluctuations in the exchange rate between the U.S. dollar and the RMB. The instruments are marked-to-market period-end In January 2018, Changyou settled the remaining foreign exchange forward contracts with a realized loss of $0.2 million recognized in the consolidated statements of comprehensive income for the year ended December 31, 2018. For the year ended December 31, 2017, the Sohu Group recorded an unrealized loss of $7.2 million, resulting from changes in the fair values of forward contracts in the consolidated statements of comprehensive income. For the years ended December 31, 2018 and 2017, the Sohu Group recorded cash outflows related to the forward contracts of $0.9 million and $3.5 million, respectively, in the consolidated statements of cash flows. As of December 31, 2018, the carrying value of the foreign exchange forward contracts recognized in other short-term liabilities was nil. The Group estimated the fair values of foreign exchange forward contracts using the Black-Scholes model. The fair values of the forward contracts were estimated based on quoted forward exchange prices at the reporting date. The Group classifies the fair value measurement of the forward contracts based on such inputs as Level 2 of fair value measurements. Restricted Time Deposits Restricted time deposits are valued based on the prevailing interest rates in the market using the discounted cash flow method. The Sohu Group classifies the valuation techniques that use these inputs as Level 2 of fair value measurements. Changyou Loans from Offshore Banks, Secured by Time Deposits In 2018, Changyou drew down loans from the Hong Kong branches of PRC banks, which were secured by an equivalent or greater amount of RMB deposits by Changyou in the PRC branches of the banks. The loans from the Hong Kong branches of the lending banks were classified as short-term or long-term bank loans based on the loans’ payment terms. For the year ended December 31, 2018, interest income from the restricted time deposits securing the loans was $1.7 million, and expense for interest on the loans was $1.4 million. Equity Investments ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities, The following table illustrates the effect of the adoption of ASU 2016-01 As reported Without adoption of 2016-01 Effect of change Higher/(Lower) Operating loss $ (160,525 ) (160,525 ) 0 Other income, net 64,167 49,828 14,339 Income tax benefit (13,432 ) (12,542 ) (890 ) Net loss (67,359 ) (82,588 ) 15,229 Foreign currency translation adjustments (37,339 ) (37,339 ) 0 Change in unrealized gain for equity securities with readily determinable fair values 0 (2,743 ) 2,743 Other comprehensive loss (37,339 ) (40,082 ) 2,743 Comprehensive loss (104,698 ) (122,670 ) 17,972 Basic net loss per share attributable to Sohu.com Limited (4.11 ) (4.19 ) 0.08 Diluted net loss per share attributable to Sohu.com Limited (4.13 ) (4.21 ) 0.08 The following table illustrates the effect of the adoption of ASU 2016-01 As reported Without adoption of 2016-01 Effect of change Higher/(Lower) Long term investments, net $ 108,356 90,357 17,999 Deferred tax liabilities 85,264 85,237 27 Accumulated other comprehensive income 24,719 29,477 (4,758 ) Accumulated deficit (394,801 ) (399,546 ) 4,745 The adoption of ASU 2016-01 Equity Investments Accounted for Using the Equity Method Investment in Fox Financial Under an agreement between Sohu and Fox Financial entered into in August 2014, Sohu invested $4.8 million and $16.1 million in Fox Financial on August 2014 and April 2015, respectively. In February 2016, Sohu invested an additional $10.5 million in Fox Financial. Sohu accounted for its investments in Fox Financial under long-term investments. These investments include both preferred shares and ordinary shares. Sohu elected to account for its investment in Fox Financial’s preferred shares at cost less impairments, adjusted by observable price changes, since they were not considered to be ordinary shares in substance and had no readily determinable fair value. There was not any observable price change in Sohu’s investment in Fox Financial in the year ended December 31, 2018. Sohu accounted for its investment in Fox Financial’s ordinary shares under the equity method, since Sohu can exercise significant influence through its board seat in Fox Financial, but does not own a majority of Fox Financial’s equity capital or control Fox Financial. In March 2017, Fox Financial issued additional ordinary shares to new investors, while shares held by Sohu remained unchanged. As a result, Sohu’s percentage of ordinary shares held was diluted from 7% to 6%. The Group recognized dilution gain of $0.7 million in other income for the three months ended March 31, 2017. As of December 31, 2018, the carrying value of Sohu’s investment in Fox Financial was $23.8 million. Equity Investments with Readily Determinable Fair Values Effective as of January 1, 2018, all equity investments in unconsolidated entities (other than those accounted for using the equity method of accounting) will generally be measured at fair value through earnings. There will no longer be an available-for-sale Equity investments with readily determinable fair values are valued using the market approach based on the quoted prices in active markets at the reporting date. The Group classifies the valuation techniques that use these inputs as Level 1 of fair value measurements. Investment in Keyeast On August 12, 2014, Sohu acquired approximately 6% of the total outstanding common shares of Keyeast, a Korean-listed company, for a purchase price of $15.1 million. The Sohu Group classified this investment as equity investments with readily determinable fair values under long-term investments, and reported it at fair value using a market approach based on Keyeast’s stock price on the South Korean stock market. The fair value of this investment was continually below its original cost for a twelve-month period ended July 31, 2017. Management considered the decline in the fair value to be other-than-temporary, and the Sohu Group recognized an impairment loss of $5.8 million in other income /(expense) in the Sohu Group’s consolidated statements in the third quarter of 2017. Starting from January 1, 2018, Sohu applied ASU 2016-01 Investment in Hylink Digital Solution Co., Ltd (“Hylink”) On May 5, 2011, Sohu acquired 2% of the equity interests of Hylink for a purchase price of $2.3 million (RMB15 million). Given that Sohu neither controls nor has significant influence over Hylink, and the equity interest of Hylink did not have a readily determinable fair value, Sohu previously accounted for this investment using the cost method. On August 2, 2017, Hylink completed its IPO on the Shanghai Stock Exchange. Upon the completion of Hylink’s IPO, Sohu’s interest in Hylink was diluted to 1.5% of Hylink’s total ordinary shares then outstanding. The Sohu Group reclassified this investment as an equity investment with a readily determinable fair value and measured its fair value based on Hylink’s stock price on the Shanghai Stock Exchange. Beginning January 1, 2018, Sohu applied ASU2016-01 Equity Investments without Readily Determinable Fair Values Based on ASU 2016-01, If this measurement alternative is elected, changes in the carrying value of the equity investment will be required to be made whenever there are observable price changes in transactions for identical or similar investments of the same issuer. The implementation guidance notes that an entity should make a “reasonable effort” to identify price changes that are known or that can reasonably be known. When observable price changes were identified, the Group used the back-solve method to re-measure non-recurring Long-term Investment in Zhihu As of December 31, 2018, Sogou had invested a cumulative total of $18.9 million in Zhihu, which is a company that engages primarily in the business of operating an online question and answer-based knowledge and information-sharing platform. Sogou elected to account for the investment in Zhihu at cost less impairments, adjusted by observable price changes, since Sogou does not have significant influence over Zhihu and its investment in Zhihu is without readily determinable fair value. In the third quarter of 2018, Sogou recognized $17.8 million in investment income with respect to the observable change in the price of Zhihu. Long-term Investment in Hainan Yun Jiang Technology Co., Ltd. (“Hainan Yun Jiang”) In March 2018, Sogou invested $12.7 million (or RMB80 million) in Hainan Yun Jiang, a high-tech enterprise that engages primarily in the business of operating on-line off-line Short-term Receivables and Payables Accounts receivable and prepaid and other current assets are financial assets with carrying values that approximate fair value due to their short-term nature. Short-term accounts payable, accrued liabilities, receipts in advance and deferred revenue, short-term bank loans and other short-term liabilities are financial liabilities with carrying values that approximate fair value due to their short-term nature. For short-term receivables and payables, the Group estimated fair values using the discounted cash flow method. The Group classifies the valuation technique as Level 2 of fair value measurements. Short-term Bank Loans For short-term bank loans, the rates of interest under the agreements with the lending banks were determined based on the prevailing interest rates in the market. The Sohu Group estimated fair values using the discounted cash flow method and classifies the valuation techniques that use these inputs as Level 2 of fair value measurements. - Factoring contract with recourse with HongKong and Shanghai Banking Corporation Limited (“HSBC”) In May 2017, Sohu entered into a factoring contract with recourse with HSBC, pursuant to which Sohu may borrow from HSBC from time to time up to a combined aggregate of RMB180.0 million (or $26.2 million), which is the upper limit reviewed by HSBC at least annually. The loan is secured by up to RMB198.0 million (or $28.8 million) of Sohu’s accounts receivable and guaranteed by Sohu Media. Interest accrues on the principal amounts of the loans outstanding at an annual rate agreed to by HSBC and Sohu upon drawdown. As of both December 31, 2018 and December 31, 2017, the total outstanding balance of the loan was nil. - Credit agreements with Ping An Bank Co., Ltd. (“Ping An Bank”) In May 2017, Sohu entered into credit agreements with Ping An Bank pursuant to which Sohu was entitled to borrow from Ping An Bank from time to time until May 18, 2020 up to a combined aggregate of RMB2.50 billion (or $364.3 million). The loan was initially secured by pledges of Sohu’s two buildings and guaranteed by Sohu.com (Game) Limited (“Sohu Game”). The initial interest rate for the loans was an annual rate equal to 115% of the rate published by the PBOC. In July 2017, Sohu entered into an amendment of its loan arrangements with Ping An Bank pursuant to which interest on outstanding principal amounts accrued at a rate designated separately upon each drawdown based on the benchmark loan rate published by the PBOC with reference to then prevailing market interest rates. In July 2017, Sohu drew down from Ping An Bank pursuant to the loan arrangements a loan with a term of 12 months in the amount of RMB400.0 million (or approximately $58.3 million) and an interest rate of 6.525% per annum, which was 150% of the rate published by the PBOC as of the date of the drawdown. In September 2017, Sohu entered into another amendment of its loan arrangements with Ping An Bank pursuant to which the maximum amount that Sohu was entitled to borrow was reduced from RMB2.50 billion (or $364.3 million) to RMB600 million (or $87.4 million), and one of Sohu’s buildings, which serves as Sohu’s corporate headquarters, was released from the pledge. In April 2018, Sohu repaid all of the outstanding balance under the loan arrangements with Ping An Bank and the other building of Sohu was released from the pledge. As of December 31, 2018 and December 31, 2017, the total outstanding balance of the loan was nil and RMB400 million (or $58.3 million), respectively. - Credit agreements with Industrial and Commercial Bank of China Limited (“ICBC”) In September 2017, Sohu entered into credit agreements with ICBC pursuant to which Sohu was entitled to borrow from ICBC from time to time until March 31, 2018 up to a combined aggregate of RMB800 million (or $116.6 million). The loan is secured by the pledge of Sohu’s building which serves as Sohu’s corporate headquarters in Beijing. Interest accrues on the principal amounts of the loans outstanding at an annual rate equal to the Loan Prime Rate (“LPR”) published by the National Interbank Funding Center, plus 1.2%. The outstanding principal amount of the loan will be payable in four equal installments, with the first installment payable 18 months after the drawdown and the other three installments payable semi-annually at the end of each of the three successive six-month As of December 31, 2018 and December 31, 2017, the total outstanding balance of the loan was RMB800 million (or $116.6 million) and RMB800 million (or $116.6 million), respectively. As of December 31, 2018, RMB400 million (or $58.3 million) was classified as a short-term bank loan and RMB400 million (or $58.3 million) was classified as a long-term bank loan based on the loan’s repayment terms. - In April 2018, Sohu entered into credit agreements with CMB pursuant to which Sohu was entitled to borrow from CMB from time to time until March 22, 2021 up to an aggregate of RMB700 million (or approximately $102.0 million)(the “CMB Loan”). In April, 2018, Sohu made an initial drawdown under the CMB Loan with a term of 12 months in the amount of RMB400 million (or $58.3 million) (the “First Drawdown”). The proceeds of the First Drawdown were used to repay in full the outstanding balance and all accrued and unpaid interest under credit agreements between Sohu and Ping An Bank. The CMB Loan was secured by a pledge of Sohu’s building, which was released from the pleage after Ping An Bank received such repayment. Interest accrued on the outstanding principal balance at a rate of 6% per year. The outstanding principal amount of the First Drawdown is due in April, 2019. In June, 2018, Sohu made a drawdown under the CMB Loan with a term of 24 months in the amount of RMB300 million (or approximately $43.7 million) (the “Subsequent Drawdown”). Interest accrued on the outstanding principal balance at a rate of 6% per year. The outstanding principal amount of the Subsequent Drawdown is payable in four installments, with the first installment of RMB45 million (or $6.7 million) having been paid in December 2018, and the other three installments payable semi-annually at the end of each of the three successive six-month As of December 31, 2018, the total outstanding balance of the CMB loan was RMB655 million (or $95.4 million). As of December 31, 2018, RMB490 million (or $71.4 million) was classified as short-term bank loans and RMB165 million (or $24.1 million) was classified as long-term bank loans based on the loans’ repayment terms. Long-term Payables Long-term payables mainly consists of long-term accounts payable, long-term bank loans, long-term Long-term accounts payable are financial liabilities with carrying values that approximate fair value due to any changes in fair value, after considering the discount rate, being immaterial. For long-term accounts payable, the Group estimated fair values using the discounted cash flow method, which is unobservable in the market. The Sohu Group classifies the valuation technique as Level 2 of fair value measurements. Assets Measured at Fair Value on a Nonrecurring Basis The following table sets forth assets measured at fair value on a nonrecurring basis by level within the fair value hierarchy as of December 31, 2017 and 2018 (in thousands) Fair value measurements at reporting date using Items As of Quoted Prices in Significant Other Significant Purchased video content recorded in prepaid and other assets $ 10,192 $ 0 $ 0 $ 10,192 Intangible assets, net 23,060 0 0 23,060 Goodwill 71,565 0 0 71,565 Fair value measurements at reporting date using Items As of Quoted Prices in Significant Other Significant Purchased video content recorded in prepaid and other assets $ 5,504 $ 0 $ 0 $ 5,504 Intangible assets, net 24,118 0 0 24,118 Goodwill 53,263 0 0 53,263 Purchased Video Content Recorded in Prepaid and Other Assets The impairment losses recognized in prepaid and other assets were mainly due to impairment losses for Sohu Video’s purchased video content. See Note 13 - Intangible Assets, Net. Intangible Assets Intangible assets mainly comprise purchased video content, operating rights for licensed games, domain names and trademarks, computer software, and developed technologies. The impairment losses recognized for intangible assets were mainly due to impairment losses for Sohu Video’s purchased video content. See Note 13 - Intangible Assets, Net. Goodwill Goodwill represents the excess of the purchase price over the fair value of the identifiable assets and liabilities acquired as a result of the Group’s acquisitions of interests in its subsidiaries and consolidated VIEs. The impairment losses recognized for goodwill were mainly due to the 17173.com Website. See Note 12 - Goodwill.

Fixed Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2018
FIXED ASSETS [Abstract]
Fixed Assets	11. FIXED ASSETS The following table summarizes the Sohu Group’s fixed assets (in thousands): As of December 31, 2017 2018 Office buildings $ 391,490 $ 372,723 Computer equipment and hardware 388,693 418,624 Leasehold and building improvements 45,849 49,164 Office furniture 9,879 8,878 Vehicles 4,029 3,915 Fixed assets, gross 839,940 853,304 Accumulated depreciation (310,223 ) (348,306 ) Fixed assets, net $ 529,717 $ 504,998 For the years ended December 31, 2018, 2017 and 2016, depreciation expenses for fixed assets were $93.0 million, $83.1 million and $73.4 million, respectively.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2018
GOODWILL [Abstract]
Goodwill	12. GOODWILL Changes in the carrying value of goodwill by segment are as follows (in thousands): Sohu Sogou Changyou Total Balance as of December 31, 2016 Goodwill 72,011 5,565 96,949 174,525 Accumulated impairment losses (35,788 ) 0 (70,447 ) (106,235 ) $ 36,223 $ 5,565 $ 26,502 $ 68,290 Transactions in 2017 Goodwill associated with MoboTap reclassified from assets held for sale to assets held for use 0 0 83,470 83,470 Goodwill impairment recognized for MoboTap 0 0 (83,470 ) (83,470 ) Goodwill associated with an acquisition 1,000 0 0 1,000 Foreign currency translation adjustment 930 343 1,002 2,275 Balance as of December 31, 2017 $ 38,153 $ 5,908 $ 27,504 $ 71,565 Balance as of December 31, 2017 Goodwill 73,941 5,908 181,421 261,270 Accumulated impairment losses (35,788 ) 0 (153,917 ) (189,705 ) $ 38,153 $ 5,908 $ 27,504 $ 71,565 Transactions in 2018 Foreign currency translation adjustment (772 ) (283 ) (878 ) (1,933 ) Impairment losses 0 0 (16,369 ) (16,369 ) Balance as of December 31, 2018 $ 37,381 $ 5,625 $ 10,257 $ 53,263 Balance as of December 31, 2018 Goodwill 69,627 5,625 180,543 255,795 Accumulated impairment losses (32,246 ) 0 (170,286 ) (202,532 ) $ 37,381 5,625 $ 10,257 $ 53,263 There was one reporting unit under the Sohu segment and one reporting unit under the Sogou segment. The reporting units under the Changyou segment consisted of the Changyou online game business, the 17173.com Website, RaidCall, and the cinema advertising business. In the fourth quarter of 2018, the Sohu Group tested goodwill for impairment at the reporting unit level. The Group performed impairment tests using the qualitative and quantitative methods. For the Sohu and Sogou segments, impairment tests were conducted by quantitatively comparing the fair values of the reporting units to their carrying amounts. The Sohu and Sogou segments estimated the fair values by weighting the results from the income approach and market approach. The valuation approach considers a number of factors that include expected future cash flows, growth rates, discount rates, and market price, and requires Sohu and Sogou to make certain assumptions and estimates regarding industry economic factors and future profitability of the business. For the Changyou segment, Changyou first qualitatively assessed whether it was more likely than not that the fair values of the reporting segments were less than their carrying amounts. For those reporting units where it was more likely than not that their fair values were less than their carrying amounts, Changyou performed the first step of a two-step In the fourth quarter of 2018, Changyou recognized a $16.4 million impairment loss for goodwill relating to the 17173.com Website, primarily due to (i) the launch of new initiatives for the 17173.com Website having fallen behind schedule in the fourth quarter of 2018 and the profit outlook for the 17173.com Website being uncertain, and (ii) the relevant Chinese authority’s temporary suspension between April and December of 2018 of its review of, and issuance of publishing and authorization codes for, online games, which resulted in declines in the number of new games launched and the related demand from game developers and operators for online advertising services on the 17173.com Website, both of which Changyou’s management determined had a material adverse impact on Changyou’s ability to generate revenues and net income from the 17173.com Website. As of December 31, 2018, for the Sohu and Sogou segments, and the businesses in the Changyou segment other than the 17173.com Website, management concluded that the fair values of the reporting units exceeded their carrying values, indicating that the goodwill of the reporting units was not impaired. In the third quarter of 2017, due to reinforced restrictions Chinese regulatory authorities imposed on online card and board games, some of Changyou’s key distribution partners informed Changyou that they had decided to stop the distribution and promotion of card and board games in the third quarter of 2017, which had an adverse impact on MoboTap’s performance, and also increased the uncertainty for its future operations and cash flow. As a result, Changyou determined that it was unlikely that MoboTap would gain users and grow its online card and board games revenues in China, Changyou management performed an impairment test in the third quarter of 2017 using the discounted cash flow method, and an impairment loss of $83.5 million was recognized for goodwill to reflect the fair value of the MoboTap business. Changyou sold MoboTap in March 2018.

Intangible Assets, Net

Intangible Assets, Net	12 Months Ended
	Dec. 31, 2018
INTANGIBLE ASSETS, NET [Abstract]
Intangible Assets, Net	13. INTANGIBLE ASSETS, NET The following table summarizes the Sohu Group’s intangible assets, net, as of December 31, 2017 and 2018 (in thousands): As of December 31, 2017 Items Gross Accumulated Impairment Net Purchased video content $ 152,135 $ (135,177 ) $ (11,275 ) $ 5,683 Operating rights for licensed games 34,296 (17,882 ) (10,924 ) 5,490 Domain names and trademarks 33,630 (11,144 ) (13,279 ) 9,207 Computer software 17,413 (15,401 ) 0 2,012 Developed technologies 19,300 (5,020 ) (14,089 ) 191 Others 25,051 (15,189 ) (9,385 ) 477 Total $ 281,825 $ (199,813 ) $ (58,952 ) $ 23,060 As of December 31, 2018 Items Gross Accumulated Impairment Net Purchased video content $ 177,307 $ (156,198 ) $ (18,556 ) $ 2,553 Operating rights for licensed games 46,328 (22,299 ) (11,806 ) 12,223 Domain names and trademarks 28,536 (11,124 ) (9,823 ) 7,589 Computer software 15,671 (14,022 ) 0 1,649 Developed technologies 8,902 (1,463 ) (7,439 ) 0 Others 7,204 (4,407 ) (2,693 ) 104 Total $ 283,948 $ (209,513 ) $ (50,317 ) $ 24,118 Impairment Losses In 2018, Sohu recognized $10.4 million in losses related to Sohu Video’s purchased video content, of which $9.8 million was recognized as impairment of intangible assets and $0.6 million was recognized as impairment of prepaid and other current assets, as Sohu Video’s revenues for 2018 did not meet management’s expectations. In 2017, Sohu recognized $70.6 million in losses related to Sohu Video’s purchased video content, of which $43.1 million was recognized as impairment of intangible assets and $27.5 million was recognized as impairment of prepaid and other current assets. The impairment losses incurred were mainly due to Sohu Video’s restructuring of its sales team and a strategy shift from purchasing expensive head content to self-producing content, as a result, revenues for 2017 did not meet management’s expectations. Also in 2017, Changyou recognized a $3.4 million impairment loss related to intangible assets for its MoboTap business, mainly due to reinforced restrictions that Chinese regulatory authorities imposed on online card and board games, which had an adverse impact on MoboTap’s current performance, and also increased the uncertainty for its future operations and cash flow. In 2016, the Group recognized $22.9 million in losses for impairment related to Sohu Video’s purchased video content and Changyou purchased content and license rights to games. Impairment losses recognized consisted primarily of impairment losses incurred by Sohu of $18.6 million, including $2.9 million for intangible assets and $15.7 million for prepaid and other current assets, mainly due to the restructuring of the sales team of Sohu Video, which had an adverse impact on Sohu Video’s performance for 2016 and resulted in a lowering of management’s expectations of the programming usefulness of certain Sohu Video’s purchased video content. Amortization In 2018, 2017 and 2016, amortization of intangible assets was $59.4 million, $140.7 million and $131.2 million, respectively. As of December 31, 2018, amortization expenses for future periods are estimated to be as follows: For the year ending December 31, (in thousands) 2019 8,452 2020 6,526 2021 3,007 2022 1,101 2023 963 Thereafter 4,069 Total expected amortization expense $ 24,118

Taxation

Taxation	12 Months Ended
	Dec. 31, 2018
TAXATION [Abstract]
Taxation	14. TAXATION Income Tax PRC Corporate Income Tax The majority of the subsidiaries and VIEs of the Sohu Group are based in mainland China and are subject to income taxes in the PRC. These China-based subsidiaries and VIEs conduct substantially all of the Sohu Group’s operations, and generate most of the Sohu Group’s income or losses. The CIT Law applies an income tax rate of 25% to all enterprises but grants preferential tax treatment to HNTEs, “Software Enterprises,” and KNSEs. Principal Entities Qualified as HNTEs Under preferential tax treatment, HNTEs can enjoy an income tax rate of 15%, but need to re-apply As of December 31, 2018, the following principal entities of the Sohu Group were qualified as HNTEs and were entitled to an income tax rate of 15%. For Sohu’s Business - Sohu Internet. Sohu Internet re-applied re-apply - Sohu Media and Guangzhou Qianjun. Sohu Media and Guangzhou Qianjun re-applied re-apply - Sohu New Momentum. Sohu New Momentum qualified as an HNTE for the years 2016 through 2018, and will need to re-apply For Sogou’s Business - Sogou Information. Sogou Information re-applied re-apply - Sogou Technology. Sogou Technology re-applied re-apply - Sogou Network. Sogou Network qualified as an HNTE for the years 2016 through 2018, and will need to re-apply For Changyou’s Business - Gamease and AmazGame. Gamease and AmazGame re-applied re-apply - Gamespace. Gamespace qualified as an HNTE for the years 2016 through 2018, and will need to re-apply Principal Entities Qualified as Software Enterprises and KNSEs The CIT Law and its implementing regulations provide that a Software Enterprise is entitled to an income tax exemption for two years beginning with its first profitable year and a 50% reduction to a rate of 12.5% for the subsequent three years. An entity that qualifies as a KNSE is entitled to a further reduced preferential income tax rate of 10%. Enterprises wishing to enjoy the status of a Software Enterprise or a KNSE must perform a self-assessment each year to ensure they meet the criteria for qualification and file required supporting documents with the tax authorities before using the preferential CIT rates. These enterprises will be subject to the tax authorities’ assessment each year as to whether they are entitled to use the relevant preferential CIT treatments. If at any time during the preferential tax treatment years an enterprise uses the preferential CIT rates but the relevant authorities determine that it fails to meet applicable criteria for qualification, the relevant authorities may revoke the enterprise’s Software Enterprise/KNSE status. For Sohu’s Business - Sohu New Momentum. In 2018, Sohu New Momentum completed a self-assessment, filed required supporting documents, and was qualified as a Software Enterprise, which entitled it to the second year of an income tax rate reduction from 25% to 12.5% for 2017. Sohu New Momentum will follow the same process in 2019 to entitle it to the third year of an income tax rate reduction from 25% to 12.5% for 2018. For Sogou’s Business - Sogou Technology. In 2018, Sogou Technology completed a self-assessment and filed required supporting documents for KNSE status for 2017. In 2018, Sogou Technology was qualified as a KNSE after the relevant government authorities’ assessment and was entitled to a preferential income tax rate of 10% for 2017. Sogou Technology will follow the same process in 2019 for KNSE status for 2018. For Changyou’s Business - AmazGame. In 2018, AmazGame completed a self-assessment and filed required supporting documents for KNSE status for 2017. Also in 2018, AmazGame was qualified as a KNSE after the relevant government authorities’ assessment and was entitled to a preferential income tax rate of 10% for 2017. AmazGame will follow the same process in 2019 for KNSE status for 2018. - Changyou Chuangxiang. In 2018, Changyou Chuangxiang completed a self-assessment, filed required supporting documents, and was qualified as a Software Enterprise, which entitled it to the first year of an income tax exemption for 2017. Changyou Chuangxiang will follow the same process in 2019 to entitle it to the second year of an income tax exemption for 2018. U.S. Corporate Income Tax Sohu.com Inc., which was formerly the top-tier one-time Certain activities conducted in the PRC resulted in U.S. corporate income taxes being imposed on Sohu.com Inc. when its subsidiaries that were controlled foreign corporations (“CFCs”) generated income that was subject to Subpart F of the U.S. Internal Revenue Code (“Subpart F”). Generally, passive income, such as rents, royalties, interest, dividends, and gains from disposal of the company’s investments, is among the types of income subject to taxation under Subpart F. Any income taxable under Subpart F was taxable in the U.S. at a federal corporate income tax rate of 21%. Subpart F income also included certain income from intra-Group transactions between Sohu.com Inc.’s non-U.S. non-U.S. non-U.S. non-U.S. To the extent that portions of Sohu.com Inc.’s U.S. taxable income, such as Subpart F income or GILTI, had been determined to be from sources outside of the U.S., subject to certain limitations, Sohu.com Inc. could claim foreign tax credits to offset its U.S. income tax liabilities. Following the enactment of the U.S. TCJA, if dividends that Sohu.com Inc. received from its subsidiaries after January 1, 2018 were determined to be from sources outside of the U.S., subject to certain limitations, Sohu.com Inc. would generally not have been required to pay U.S. corporate income tax on those dividends. Liabilities for U.S. corporate income tax were accrued in the Company’s consolidated statements of comprehensive income and estimated tax payments were made when required by U.S. law. Treatment of Toll Charge Related to the U.S. TCJA Beginning in the fourth quarter of 2017, the Sohu Group had recognized a provisional amount of income tax expense for the Toll Charge of $219 million, which represented management’s estimate of the amount of the Toll Charge that would have been payable by Sohu.com Inc. based on the deemed repatriation to the United States of its share of previously deferred earnings of certain of its non-U.S. For the fourth quarter of 2018, the Sohu Group’s management re-evaluated The tax benefit recognized and the unrecognized tax benefit in relation to the Toll Charge may be subject to further adjustment in subsequent periods based on facts and circumstances that arose after December 31, 2018, such as final IRS Toll Charge regulations published in February 2019, and any future circumstances such as any guidance issued by the U.S. Department of the Treasury, any U.S. IRS challenge of the Group’s position on the Toll Charge, if any, and management’s further judgment and estimates. Cayman Island Tax Under the current tax laws of the Cayman Islands, the Group is not subject to tax on its income or capital gains. In addition, no Cayman Islands withholding tax will be imposed upon the payment of dividends by the Group to its shareholders. Hong Kong Tax The Group’s subsidiaries incorporated in Hong Kong are subject to profits tax in Hong Kong at the rate of 16.5% for each of the years ended December 31, 2016, 2017 and 2018. Composition of Income Tax Expense Sohu.com Inc., which was the former top-tier top-tier The components of income before income taxes are as follows (in thousands): Year ended December 31, 2016 2017 2018 Income /(loss) before income tax expense Income /(loss) from China operations $ (88,440 ) $ (75,893 ) $ (33,091 ) Income /(loss) from non-China (5,461 ) (120,962 ) (47,700 ) Total income /(loss) before income tax expense $ (93,901 ) $ (196,855 ) $ (80,791 ) Income tax expense applicable to China operations Current tax $ 13,635 $ 57,413 $ 15,040 Deferred tax 8,500 380 49,598 Subtotal income tax expense applicable to China operations 22,135 57,793 64,638 Non China income tax expense/(benefit) (2,134 ) 214,737 (78,539 ) Non China withholding tax expense 1,071 618 469 Total income tax expense $ 21,072 $ 273,148 $ (13,432 ) For the fourth quarter of 2018, the Sohu Group’s management re-evaluated In 2017, of the $273.1 million income tax expense, $57.8 million was for PRC tax, mainly attributable to the Sohu Group’s business operations, and $214.7 million was for U.S. corporate income tax, resulting primarily from the Company’s recognition in the fourth quarter of 2017 of $219 million for the Toll Charge, which represented management’s estimate of the amount of the Toll Charge that would have been payable by Sohu.com Inc. based on the deemed repatriation to the United States of Sohu.com Inc.’s share of previously deferred earnings of certain non-U.S. The combined effects of the income tax exemption and reduction available to the Group are as follows (in thousands, except per share data): Year Ended December 31, 2016 2017 2018 Tax holiday effect $ 30,872 $ 17,736 $ 28,385 Basic net income per share effect 0.80 0.46 0.73 Effective Tax Rate The CIT Law applies an income tax rate of 25% to all enterprises, but grants preferential tax treatment to HNTEs, Software Enterprises, and KNSEs. The U.S. TCJA significantly modified the U.S. Internal Revenue Code by, among other things, reducing the statutory U.S. federal corporate income tax rate from 35% to 21% for taxable years beginning after December 31, 2017; limiting and/or eliminating many business deductions; migrating the U.S. to a territorial tax system with a one-time The following is reconciliation between the statutory rate and the Group’s effective tax rate. For 2016 and 2017, the statutory rate represented the U.S. statutory rate of 35%, and for 2018, the statutory rate represented the PRC statutory rate of 25%. The table does not reflect any accruals related to the Toll Charge. See “ U.S. Corporate Income Tax Treatment of Toll Charge Related to the U.S. TCJA. Year Ended December 31, 2016 2017 2018 Statutory Rate: 35 % 35 % 25 % Effect of tax holidays applicable to subsidiaries and consolidated VIEs (1) 33 % 9 % 35 % Tax differential from statutory rate applicable to subsidiaries and consolidated VIEs (3 %) (11 %) 4 % Effect of withholding taxes (2) (4 %) (2 %) (65 %) Changes in valuation allowance for deferred tax assets (91 %) (57 %) (69 %) Others 8 % (2 %) (4 %) (22 %) (28 %) (74 %) Note (1): The reversal of income tax for preferential income tax rates that Changyou’s and Sogou’s subsidiaries and VIEs were entitled to as KNSEs or Software Enterprises for 2016, 2017 and 2018 was included in the “Effect of tax holidays applicable to subsidiaries and consolidated VIEs” in the above table. Note (2): The change was mainly due to additional income withholding tax of $47 million that was recognized in the first quarter of 2018 due to a revised policy for Changyou’s PRC subsidiaries with respect to their distribution of cash dividends. The revised policy was adopted to facilitate the distribution of a special cash dividend in the aggregate amount of approximately $500.0 million that was declared by Changyou’s Board of Directors on April 5, 2018. PRC Withholding Tax on Dividends The CIT Law imposes a 10% withholding income tax on dividends distributed by foreign invested enterprises in the PRC to their immediate holding companies outside Mainland China. A lower withholding tax rate may be applied if there is a tax treaty between Mainland China and the jurisdiction of the foreign holding company. A holding company in Hong Kong, for example, will be subject to a 5% withholding tax rate under an arrangement between the PRC and the Hong Kong Special Administrative Region on the “Avoidance of Double Taxation and Prevention of Fiscal Evasion with Respect to Taxes on Income,” if such holding company is considered a non-PRC Before 2018, in order to fund the distribution of a dividend to shareholders of the Sohu Group’s majority-owned subsidiary Changyou, Changyou’s management determined to cause one of its PRC subsidiaries to declare and distribute a cash dividend of all of its stand-alone 2012 earnings and half of its stand-alone subsequent years’ earnings to its direct overseas parent company, Changyou HK, and adopted as a policy for such subsequent years for its PRC subsidiaries a limit on payment of dividends to their direct overseas parent companies of one-half With the exception of that dividend, the Sohu Group does not intend to have any of its PRC subsidiaries or VIEs distribute any undistributed profits of such subsidiaries or VIEs to their direct overseas parent companies, but rather intends that such profits will be permanently reinvested by such subsidiaries and VIEs for their PRC operations. As of December 31, 2018, the total amount of undistributed profits from the PRC subsidiaries and VIEs for which no withholding tax had been accrued was $2.45 billion, and the unrecognized tax liabilities were $245.1 million. PRC Value-Added Tax On May 1, 2016, the transition from the imposition of PRC business tax to the imposition of VAT was expanded to all industries in China, and as a result all of the Sohu Group’s revenues have been subject to VAT since that date. To record VAT payable, the Group adopted the net presentation method, which presents the difference between the output VAT (at rates of 6% or 17% for the years ended December 31, 2016 and 2017 and for the period from January 1, 2018 to April 30, 2018, and at rates of 6% or 16% after May 1, 2018) and the available input VAT amount (at the rate applicable to the supplier). Deferred Tax Assets and Liabilities Significant components of the Group’s deferred tax assets and liabilities consist of the following (in thousands): As of December 31, 2017 2018 Deferred tax assets: Net operating loss from operations $ 245,534 $ 270,807 Accrued bonus and commissions 25,164 26,704 Intangible assets transfer 538 286 Others 10,307 14,784 Total deferred tax assets 281,543 312,581 Less: Valuation allowance (256,347 ) (285,225 ) Net deferred tax assets $ 25,196 $ 27,356 Deferred tax liabilities Withholding tax for Dividend $ (30,992 ) $ (79,824 ) Deferred U.S. tax (5,498 ) 0 Intangible assets from business acquisitions (1,247 ) (1,087 ) Others (5,655 ) (4,353 ) Total deferred tax liabilities $ (43,392 ) $ (85,264 ) Net deferred tax assets are recorded under other assets in the consolidated balance sheets. As of December 31, 2018, the Group had net operating losses from PRC entities of approximately $1.24 billion available to offset against future net profit for income tax purposes. The Group anticipates that it is more likely than not that these net operating losses may not be utilized based on its estimate of the operation performance of these PRC entities; therefore, $264.5 million in deferred tax assets generated from net operating losses were offset by a valuation allowance. The following table sets forth the movement of the valuation allowances for deferred tax assets for the years presented (in thousands): For the Year Ended 2016 2017 2018 Beginning balance $ 153,559 216,174 256,347 Provision for the year 83,078 66,092 49,529 Reversal for the year (10,952 ) (39,004 ) (8,253 ) Foreign currency translation adjustment (9,511 ) 13,085 (12,398 ) Ending balance $ 216,174 256,347 285,225 In 2018, $14.8 million of PRC net operating losses generated from previous years expired. Pursuant to a public announcement issued by the PRC State Administration of Taxation in August 2018, net operating losses of entities not qualified as HNTEs will expire between 2019 and 2023 if not utilized and those of entities qualified as HNTEs will expire in 2028. Uncertain Tax Positions The following table summarizes the Group’s unrecognized tax benefit from January 1, 2016 to December 31, 2018 (in thousands): As of December 31, 2016 2017 2018 Beginning balance $ 39,244 $ 32,682 $ 31,138 Decreases related to prior year tax positions (6,649 ) (1,544 ) (1,190 ) Increases related to current year tax positions 87 0 144,414 Ending balance $ 32,682 $ 31,138 $ 174,363 The increase in 2018 was mainly due to an unrecognized tax benefit in the amount of $142 million, which represented the difference between the tax benefit recognized in the fourth quarter of 2018 in relation to the Toll Charge and management’s previous estimate of the Toll Charge that would have been due by Sohu.com Inc. if it had not been dissolved and liquidated on May 31, 2018. The Group recognized interest in the amount of $2 million in connection with the unrecognized tax benefit for the year ended December 31, 2018. The Group did not have any significant penalties associated with tax positions for the year ended December 31, 2018. In 2017, the decreases related to prior year tax positions mainly represented write-offs of $2.4 million related to uncertain tax positions generated in 2009 and 2013. The material jurisdictions in which the Group is subject to potential examination include China and the United States. In general, the PRC tax authorities have up to five years, and the U.S. IRS has up to three years and in certain cases up to six years, to conduct examinations of the tax filings of the Group.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
COMMITMENTS AND CONTINGENCIES [Abstract]
Commitments and Contingencies	15. COMMITMENTS AND CONTINGENCIES Commitments The following table sets forth the Group’s commitments as of December 31, 2018 (in thousands): 2019 2020 2021 2022 2023 Thereafter Total Purchase of cinema advertisement slot rights $ 56,396 40,579 18,064 6,103 4,019 0 125,161 Purchase of bandwidth 82,814 1,143 311 0 0 0 84,268 Operating lease obligations (1) 14,713 13,897 6,971 809 271 0 36,661 Interest payment commitment 16,754 11,119 7,062 0 0 0 34,935 Purchase of content and services – video 23,746 2,159 2,066 0 0 0 27,971 Expenditures for operating rights for licensed games with technological feasibility 19,475 1,098 0 0 0 0 20,573 Expenditures for titles of games in development 6,990 725 0 0 0 0 7,715 Purchase of content and services – others 6,148 90 54 54 18 0 6,364 Fees for operating rights for licensed games in development 585 0 0 0 0 0 585 Others 5,640 0 0 0 0 0 5,640 Total Payments Required $ 233,261 70,810 34,528 6,966 4,308 0 349,873 Note (1): For the years ended December 31, 2018, 2017 and 2016, rental expense included in the operating lease was approximately $24.7 million, $23.9 million, and $23.9 million, respectively. Litigation The Sohu Group is a party to various litigation matters which it considers routine and incidental to its business. The Sohu Group records a liability when the likelihood of an unfavorable outcome is probable and the amount of loss can be reasonably estimated. The Sohu Group evaluates, on a regular basis, developments in litigation matters that could affect the amount of liability that has been previously accrued and makes adjustments as appropriate. Management believes that the total liabilities to the Sohu Group that may arise as a result of currently pending legal proceedings will not have a material adverse effect on the Group’s business, results of operations, financial condition and cash flows. Sogou is currently involved in several lawsuits in PRC courts where its competitors instituted proceedings or asserted counterclaims against the Sogou or the Sogou instituted proceedings or asserted counterclaims against its competitors. There are also four putative class action lawsuits that have been filed against Sogou in the United States, three in a State court in the State of California and one in the United States District Court for the Southern District of New York, that allege violations of U.S. securities laws in connection with Sogou’s IPO in 2017. As of December 31, 2018, Sohu and Changyou had no significant litigation contingencies, and Sogou had recorded estimated liabilities of $3.4 million for litigation contingencies as a component of accrued liabilities related to its currently pending proceedings. PRC Law and Regulations The Chinese market in which the Sohu Group operates poses certain macro-economic and regulatory risks and uncertainties. These uncertainties extend to the ability to operate an Internet business and to conduct brand advertising, search and search-related advertising, online game, and other services in the PRC. Though the PRC has, since 1978, implemented a wide range of market-oriented economic reforms, continued reforms and progress towards a full market-oriented economy are uncertain. In addition, the telecommunication, information, and media industries remain highly regulated. Restrictions are currently in place and are unclear with respect to which segments of these industries foreign-owned entities, like the Sohu Group, may operate. The Chinese government may issue from time to time new laws or new interpretations of existing laws to regulate areas such as telecommunication, information and media. The Sohu Group’s legal structure and scope of operations in China could be subject to restrictions, which could result in limits on its ability to conduct business in the PRC. Certain risks related to PRC law that could affect the Sohu Group’s VIE structure are discussed in Note 16 - VIEs. Regulatory risks also encompass interpretation by PRC tax authorities of current tax law, including the applicability of certain preferential tax treatments. The Sohu Group’s sales, purchase and expense transactions are generally denominated in RMB and a significant portion of its assets and liabilities are denominated in RMB. The RMB is not freely convertible into foreign currencies. In China, foreign exchange transactions are required by law to be transacted only by authorized financial institutions. Remittances in currencies other than RMB by its subsidiaries in China may require certain supporting documentation in order to effect the remittance.

VIEs

VIEs	12 Months Ended
	Dec. 31, 2018
VIES [Abstract]
VIEs	16. VIEs Background PRC laws and regulations prohibit or restrict foreign ownership of companies that operate Internet information and content, Internet access, online games, mobile, value added telecommunications and certain other businesses in which the Sohu Group is engaged or could be deemed to be engaged. Consequently, the Sohu Group conducts certain of its operations and businesses in the PRC through its VIEs. The Sohu Group consolidates in its consolidated financial statements all of the VIEs of which the Group is the primary beneficiary. VIEs Consolidated within the Sohu Group The Sohu Group adopted the guidance of accounting for VIEs, which requires VIEs to be consolidated by the primary beneficiary of the entity. Management made evaluations of the relationships between the Sohu Group and its VIEs and the economic benefit flow of contractual arrangements with the VIEs. In connection with such evaluation, management also took into account the fact that, as a result of contractual arrangements with its consolidated VIEs, the Sohu Group controls the shareholders’ voting interests in those VIEs. As a result of such evaluation, the management concluded that the Sohu Group is the primary beneficiary of the VIEs which the Group consolidates. All of the consolidated VIEs are incorporated and operated in the PRC, and the Group’s principal VIEs are directly or indirectly owned by Dr. Charles Zhang, the Sohu Group’s Chairman and Chief Executive Officer, or other executive officers and employees of the Sohu Group identified below. Capital for the consolidated VIEs was funded by the Sohu Group through loans provided to Dr. Charles Zhang and other executive officers and employees, and was initially recorded as loans to related parties. These loans are eliminated for accounting purposes against the capital of the VIEs upon consolidation. Under contractual agreements with the Sohu Group, Dr. Charles Zhang and those other executive officers and employees of the Sohu Group who are shareholders of the consolidated VIEs are required to transfer their ownership in these entities to the Group, if permitted by PRC laws and regulations, or, if not so permitted, to designees of the Group at any time as requested by the Group to repay the loans outstanding. All voting rights of the consolidated VIEs are assigned to the Sohu Group, and the Group has the right to designate all directors and senior management personnel of the consolidated VIEs, and also has the obligation to absorb losses of the consolidated VIEs. Dr. Charles Zhang and those other executive officers and employees of the Sohu Group who are shareholders of the consolidated VIEs have pledged their shares in the consolidated VIEs as collateral for the loans. As of December 31, 2018, the aggregate amount of these loans was $7.7 million. Under its contractual arrangements with the consolidated VIEs, the Sohu Group has the power to direct activities of the VIEs, and can have assets transferred freely out of the VIEs without any restrictions. Therefore, the Group considers that there is no asset of a consolidated VIE that can be used only to settle obligations of the VIEs, except for registered capital and PRC statutory reserves of the VIEs. As of December 31, 2018, the registered capital and PRC statutory reserves of the consolidated VIEs totaled $65.2 million. As all of the consolidated VIEs are incorporated as limited liability companies under the PRC Company Law, creditors of the consolidated VIEs do not have recourse to the general credit of the Sohu Group for any of the liabilities of the consolidated VIEs. Currently there is no contractual arrangement that could require the Sohu Group to provide additional financial support to the consolidated VIEs. As the Sohu Group is conducting certain business in the PRC mainly through the consolidated VIEs, the Group may provide such support on a discretionary basis in the future, which could expose the Group to a loss. The Sohu Group classified the consolidated VIEs within the Sohu Group as principal VIEs or immaterial VIEs based on certain criteria, such as the VIEs’ total assets or revenues. The following is a summary of the principal VIEs within the Sohu Group: Basic Information for Principal VIEs and Subsidiaries of Principal VIEs For Sohu’s Business - High Century High Century was incorporated in 2001. As of December 31, 2018, Dr. Charles Zhang and Wei Li held 80% and 20% interests, respectively, in this entity. - Heng Da Yi Tong Heng Da Yi Tong was incorporated in 2002. As of December 31, 2018, Dr. Charles Zhang and Wei Li held 80% and 20% interests, respectively, in this entity. - Sohu Internet Sohu Internet was incorporated in 2003. As of December 31, 2018, High Century held a 100% interest in this entity. - Donglin Donglin was incorporated in 2010. As of December 31, 2018, Sohu Internet held a 100% interest in this entity. - Tianjin Jinhu Tianjin Jinhu was incorporated in 2011. In October 2016, Ye Deng transferred its 50% equity interest in Tianjin Jinhu to Xiufeng Deng. As of December 31, 2018, Xiufeng Deng and Xuemei Zhang each held a 50% interest in this entity. - Focus Interactive Focus Interactive was incorporated in July 2014. As of December 31, 2018, Heng Da Yi Tong held 100% of the equity interests in this entity. - Guangzhou Qianjun Guangzhou Qianjun was acquired in November 2014. As of December 31, 2018, Tianjin Jinhu held a 100% interest in this entity. For Sogou’s Business - Sogou Information Sogou Information was incorporated in 2005. As of December 31, 2018, Xiaochuan Wang, Sogou’s Chief Executive Officer, High Century and Tencent held 10%, 45% and 45% interests, respectively, in this entity. - Chengdu Easypay Chengdu Easypay was incorporated in 2015. As of December 31, 2018, Sogou Information and Beijing Shi Ji Si Su Technology Co., Ltd. (“Shi Ji Si Su”), a subsidiary of Sogou Information, held 9% and 91% interests, respectively, in this entity. For Changyou’s Business - Gamease Gamease was incorporated in 2007. As of December 31, 2018, High Century held a 100% interest in this entity. - Shanghai ICE Shanghai ICE was acquired by Changyou in 2010. As of December 31, 2018, Gamease held a 100% interest in this entity. - Guanyou Gamespace Guanyou Gamespace was incorporated in 2010. As of December 31, 2018, Changyou Star held a 100% interest in this entity. Financial Information The following financial information of the Sohu Group’s consolidated VIEs (including subsidiaries of VIEs) is included in the accompanying consolidated financial statements (in thousands): As of December 31, 2017 2018 ASSETS: Cash and cash equivalents $ 43,618 $ 65,864 Restricted cash 0 697 Account and financing receivables, net 95,305 122,884 Prepaid and other current assets 26,755 20,554 Short-term investments 12,303 7,305 Intra-Group receivables due from the Company’s subsidiaries 398,135 390,157 Total current assets 576,116 607,461 Long-term investments, net 32,266 45,871 Fixed assets, net 2,414 1,793 Intangible assets, net 11,719 18,240 Goodwill 37,291 36,353 Other non-current 2,614 1,925 Total assets $ 662,420 $ 711,643 LIABILITIES: Accounts payable $ 53,842 $ 84,749 Accrued liabilities 76,883 60,555 Receipts in advance and deferred revenue 46,939 43,020 Other current liabilities 97,991 86,851 Intra-Group payables due to the Company’s subsidiaries 197,367 273,672 Total current liabilities 473,022 548,847 Long-term tax liabilities 14,293 13,554 Deferred tax liabilities 3,451 2,239 Intra-Group payables due to the Company’s subsidiaries 20,560 18,897 Total liabilities $ 511,326 $ 583,537 As of December 31, 2016 2017 2018 Net revenue $ 894,697 $ 881,284 $ 923,131 Net income /(loss) $ 9,557 $ 34,910 $ (18,436 ) Year ended December 31, 2016 2017 2018 Net cash provided by /(used in) operating activities $ (17,804 ) $ (52,351 ) $ 69,925 Net cash used in investing activities (2,273 ) (14,020 ) (49,271 ) Net cash provided by /(used in) financing activities $ 0 $ (131 ) $ 650 Summary of Significant Agreements Currently in Effect Agreements between Subsidiaries, Consolidated VIEs and Nominee Shareholders Loan and share pledge agreement Loan and share pledge agreement Loan agreements and equity pledge agreements Exclusive equity interest purchase right agreements Business operation agreement Powers of Attorney Loan and share pledge agreements free-and VIE-related VIE-related VIE-related Exclusive equity interest purchase right agreements Business operation agreement Powers of Attorney Loan agreements and equity pledge agreements VIE-related VIE-related VIE-related Equity interest purchase right agreements Powers of attorney Business operation agreements Business Arrangements between Subsidiaries and Consolidated VIEs Exclusive technology consulting and service agreement Exclusive technology consulting and service agreement Exclusive technology consulting and service agreement Technology support and utilization agreements Services and maintenance agreements Certain of the contractual arrangements described above between the VIEs and the related wholly-owned subsidiaries of the Sohu Group are silent regarding renewals. However, because the VIEs are controlled by the Sohu Group through powers of attorney granted to the Sohu Group by the shareholders of the VIEs, the contractual arrangements can be, and are expected to be, renewed at the subsidiaries’ election. VIE-Related It is possible that the Sohu Group’s operation of certain of its operations and businesses through VIEs could be found by PRC authorities to be in violation of PRC law and regulations prohibiting or restricting foreign ownership of companies that engage in such operations and businesses. If a finding were made by PRC authorities that the Sohu Group’s operation of certain of its operations and businesses through VIEs is prohibited, regulatory authorities with jurisdiction over the licensing and operation of such operations and businesses would have broad discretion in dealing with such a violation, including levying fines, confiscating the Sohu Group’s income, revoking the business or operating licenses of the affected businesses, requiring the Sohu Group to restructure its ownership structure or operations, or requiring the Sohu Group to discontinue all or any portion of its operations. Any of these actions could cause significant disruption to the Sohu Group’s business operations, and have a severe adverse impact on the Sohu Group’s cash flows, financial position, and operating performance. The Sohu Group’s management considers the possibility of such a finding by PRC regulatory authorities to be remote. In addition, it is possible that the contracts among the Sohu Group, the Sohu Group’s VIEs and shareholders of its VIEs would not be enforceable in China if PRC government authorities or courts were to find that such contracts contravene PRC law and regulations or are otherwise not enforceable for public policy reasons. In the event that the Sohu Group was unable to enforce these contractual arrangements, the Sohu Group would not be able to exert effective control over the affected VIEs. Consequently, such VIEs’ results of operations, assets and liabilities would not be included in the Sohu Group’s consolidated financial statements. If such were the case, the Sohu Group’s cash flows, financial position and operating performance would be severely adversely affected. The Sohu Group’s contractual arrangements with respect to its consolidated VIEs are in place. The Sohu Group’s management believes that such contracts are enforceable, and considers the possibility remote that PRC regulatory authorities with jurisdiction over the Sohu Group’s operations and contractual relationships would find the contracts to be unenforceable. The Sohu Group’s operations and businesses rely on the operations and businesses of its VIEs, which hold certain recognized and unrecognized revenue-producing assets. The recognized revenue-producing assets include goodwill and intangible assets acquired through business acquisitions. Goodwill primarily represents the expected synergies from combining an acquired business with the Sohu Group. Intangible assets acquired through business acquisitions mainly consist of customer relationships, non-compete

Sohu.com Limited Shareholders'

Sohu.com Limited Shareholders' Equity	12 Months Ended
	Dec. 31, 2018
SOHU.COM LIMITED SHAREHOLDERS' EQUITY [Abstract]
Sohu.com Limited Shareholders' Equity	17. SOHU.COM LIMITED SHAREHOLDERS’ EQUITY Summary of the Company’s outstanding shares (in thousands): Number of Outstanding Shares 2016 2017 2018 Balance, beginning of year 38,653 38,742 38,898 Issuance: 89 156 331 Balance, end of year 38,742 38,898 39,229 Share Incentive Plans Sohu (excluding Sohu Video), Sogou, Changyou, and Sohu Video have incentive plans for the granting of share-based awards, including options and restricted share units, to their directors, management and other key employees. 1) Sohu.com Limited Share-based Awards Sohu’s 2018 Share Incentive Plan On July 2, 2010, Sohu.com Inc.’s shareholders adopted the 2010 Stock Incentive Plan, which provides for the issuance of up to 1,500,000 shares of Sohu.com Inc.’s common stock, including stock issued pursuant to the vesting and settlement of restricted stock units and pursuant to the exercise of stock options. The maximum term of any share-based award granted under the Sohu 2010 Stock Incentive Plan is ten years from the grant date. On April 2, 2018, Sohu.com Limited adopted the Sohu 2018 Share Incentive Plan, which provides for the issuance of up 1,148,565 ordinary shares of Sohu.com Limited. The Sohu 2018 Share Incentive Plan will expire in April 2028. Upon the dissolution of Sohu.com Inc. on May 31, 2018, Sohu.com Limited assumed all then existing obligations of Sohu.com Inc. with respect to equity incentive awards that had been granted under the Sohu 2010 Stock Incentive Plan and then remained outstanding, and such awards were converted into the right to receive upon exercise or settlement Sohu.com Limited’s ordinary shares under the Sohu 2018 Share Incentive Plan rather than shares of the common stock of Sohu.com Inc., subject to the other terms of such outstanding awards. As of December 31, 2018, 649,405 shares were available for grant under the Sohu 2018 Share Incentive Plan. i) Summary of Share Option Activity In February 2015, May 2016, September 2017 and November 2017, Sohu.com Inc.’s Board of Directors approved contractual grants to members of the Company’s management and key employees of options for the purchase of an aggregate of 1,068,000, 13,000, 32,000 and 6,000 shares of common stock of Sohu.com Inc., respectively, under the Sohu 2010 Stock Incentive Plan, with nominal exercise prices of $0.001, all of which were converted, on May 31, 2018, into the right to receive upon exercise Sohu.com Limited’s ordinary shares under the Sohu 2018 Share Incentive Plan. These share options vest and become exercisable in four equal installments over a period of four years, with each installment vesting upon the satisfaction of a service period requirement and certain subjective performance targets. These share options are substantially similar to restricted share units except for the nominal exercise price, which would be zero for restricted share units. Under ASC 718-10-25 ASC 718-10-55 re-measured As of December 31, 2018, 578,500 of these options had been granted and had become vested on their respective vesting dates, as a mutual understanding of the subjective performance targets was reached between the Company and the recipients, the targets had been satisfied, and the service period requirements had been fulfilled. The cumulative share-based compensation expense for these granted options has been adjusted and fixed based on their aggregate fair values, at their respective grant dates, of $22.8 million. A summary of option activity under the Sohu 2010 Stock Incentive Plan and the Sohu 2018 Share Incentive Plan, as applicable, as of and for the year ended December 31, 2018 is presented below: Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 223 $ 0.001 $ Granted 147 0.001 Exercised (328 ) 0.001 Forfeited or expired 0 Outstanding as of December 31, 2018 42 0.001 6.56 736 Vested as of December 31, 2018 42 0.001 6.56 736 Exercisable as of December 31, 2018 42 0.001 6.56 736 Note (1): The aggregated intrinsic value in the preceding table represents the difference between Sohu’s closing ADS price of $17.42 on December 31, 2018 and the nominal exercise price of the options. For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for these options was negative $5.1 million, $2.4 million and $1.4 million, respectively. The negative amounts in the tables above resulted from re-measured ii) Summary of restricted stock unit activity A summary of restricted stock/share unit activity under the Sohu 2010 Stock Incentive Plan and the Sohu 2018 Share Incentive Plan, as applicable, as of and for the year ended December 31, 2018 is presented below: Restricted Stock Units Number of Weighted-Average Unvested as of January 1, 2018 1 $ 72.92 Granted 0 Vested (1 ) 72.92 Forfeited 0 Unvested as of December 31, 2018 0 Expected to vest after December 31, 2018 0 For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for restricted stock/share units was nil, negative $1.7 million and $1.3 million, respectively. As of December 31, 2018, there was nil of unrecognized compensation expense related to unvested restricted stock/share units. The total fair value on their respective vesting dates of restricted stock/share units vested during the years ended December 31, 2018, 2017 and 2016 was nil, $0.3 million and $0.9 million, respectively. 2) Sogou Inc. Share-based Awards Sogou 2010 Share Incentive Plan Sogou adopted a share incentive plan on October 20, 2010 amended the plan effective August 22, 2014 to increase the aggregate number of Sogou Class A Ordinary Shares issuable under the plan to 41,500,000 (as amended to date, the “Sogou 2010 Share Incentive Plan”). Awards of share rights may be granted under the Sogou 2010 Share Incentive Plan to management and other key employees of Sogou and of any present or future parents or subsidiaries or VIEs of Sogou. The maximum term of any share incentive award granted under the Sogou 2010 Share Incentive Plan is ten years from the grant date. The Sogou 2010 Share Incentive Plan will expire on October 19, 2020. The options contractually granted under the Sogou 2010 Share Incentive Plan may be placed in one of the following three categories: (i) Performance-based options, which vest and become exercisable either in four equal installments or in two to four installments of specified share numbers over their specified vesting periods, with each installment vesting upon a service period requirement being met, as well as Sogou’s achievement of performance targets for the corresponding period. For purposes of recognition of share-based compensation expense, each installment is considered to be granted as of the date that the performance targets have been set; or (ii) Service-based options, which vest and become exercisable either in four equal installments or in two to four installments of specified share numbers over their specified vesting periods, with each installment vesting only upon a service period requirement being met; or (iii) IPO-based A summary of each of the above three categories of Sogou’s share options as of December 31, 2018 is presented below: Contractually Granted Vested and Exercised Performance-based options 29,687 27,199 27,060 26,592 Service-based options 1,674 1,674 486 156 IPO-based 7,250 7,250 2,930 2,930 Total 38,611 36,123 30,476 29,678 A summary of Sogou share option activity under the Sogou 2010 Share Incentive Plan as of and for the year ended December 31, 2018 is presented below: Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 9,753 $ 0.462 5.56 $ Granted 1,704 0.001 Exercised (4,515 ) 0.399 Forfeited or expired (497 ) 0.001 Outstanding as of December 31, 2018 6,445 0.419 5.29 31,137 Vested as of December 31, 2018 and expected to vest thereafter 6,059 0.446 5.10 29,109 Exercisable as of December 31, 2018 798 0.001 7.15 4,188 Note (1): The aggregate intrinsic values in the preceding table represent the difference between Sogou’s closing price of $5.25 per Class A Ordinary Share on December 31, 2018 and the exercise prices of the share options. For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for Sogou share options under the Sogou 2010 Share Incentive Plan was $12.5 million, $23.0 million and $7.6 million, respectively. As of December 31, 2018, there was $6.4 million of unrecognized compensation expense related to unvested Sogou share options. The expense is expected to be recognized over a weighted average period of 1.46 years. For the years ended December 31, 2018, 2017 and 2016, the total intrinsic value of options exercised was $33.2 million, $11.1 million, and $15.2 million, respectively. Prior to the completion of Sogou’s IPO, the fair values of Sogou Class A Ordinary Shares were assessed using the income approach /discounted cash flow method or based on the mid-point The fair value of the Sogou share options granted under the Sogou 2010 Incentive Plan was estimated on the date of grant with the assistance of a qualified professional appraiser, using the binomial valuation model with the following assumptions used: Assumptions Adopted 2016 2017 2018 Average risk-free interest rate 1.90%~2.77% 2.14%~3.00% 3.36% ~ 3.51% Exercise multiple 2~3 2~3 2 Expected forfeiture rate (post-vesting) 0%~12% 0%~12% 12% Weighted average expected option life 7 7 9 Volatility rate 43%~50% 39%~47% 40% ~ 46% Dividend yield 0% 0% 0% Weighted average fair value of share options 3.26 10.35 12.26 Sogou estimated the risk-free rate based on the market yields of U.S. Treasury securities with an estimated country-risk differential as of the valuation date. An exercise multiple was estimated as the ratio of the fair value of the Sogou Class A Ordinary Shares over the exercise prices as of the time the options would be expected to be exercised, based on consideration of research studies regarding exercise patterns based on historical statistical data. In Sogou’s valuation analysis, a multiple of three was applied for management and a multiple of two was applied for other key employees. Sogou estimated the forfeiture rate to be 0% or 1% for the Sogou share options granted to Sogou management and 12% for the Sogou share options granted to Sogou’s other key employees. As Sogou’s ordinary shares had been publicly traded for only one year as of December 31, 2018, the expected volatility at the valuation date was estimated based on the historical volatility of specified comparable companies for the periods before the grant dates with length commensurate with the expected term of the Sogou share options. Sogou has no history or expectation of paying dividends on its ordinary shares. Accordingly, the dividend yield was estimated to be 0%. Sogou 2017 Share Incentive Plan In October 2017, Sogou adopted a share incentive plan (the “Sogou 2017 Share Incentive Plan”) which provides that the aggregate number of Sogou Class A Ordinary Shares issuable under the plan is 28,000,000. Share incentive awards may be granted under the Sogou 2017 Share Incentive Plan to Sogou’s management and employees and of any of its present or future parents or subsidiaries. The maximum term of any share incentive award granted under the Sogou 2017 Share Incentive Plan is ten years from the grant date. The options contractually granted under the Sogou 2017 Share Incentive Plan may be placed in one of the following two categories: (i) Performance-based options, which vest and become exercisable in four equal installments, with each installment vesting upon a service period requirement being met, as well as the Sogou Group’s achievement of performance targets for the corresponding period. For purposes of recognition of share-based compensation expense, each installment is considered to be granted as of the date that the performance targets have been set; or (ii) Service-based options, which vest and become exercisable in four equal installments, with each installment vesting only upon a service period requirement being met. A summary of each of the above two categories of Sogou’s share options as of December 31, 2018 is presented below: Contractually Granted Vested and Exercised Performance-based options 70 0 0 0 Service-based options 730 730 0 0 Total 800 730 0 0 A summary of Sogou share option activity under the Sogou 2017 Share Incentive Plan as of and for the year ended December 31, 2018 is presented below: Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 0 $ $ Granted 767 0.001 Exercised 0 Forfeited or expired (37 ) 0.001 Outstanding as of December 31, 2018 730 0.001 9.57 3,829 Vested as of December 31, 2018 and expected to vest thereafter 544 0.001 9.57 2,857 Exercisable as of December 31, 2018 0 Note (1): The aggregate intrinsic value in the preceding table represents the difference between the Sogou’s closing price of $5.25 per Class A Ordinary Shares on December 31, 2018 and the exercise prices of the share options. For the years ended December 31, 2018, total share-based compensation expense recognized for Sogou share options under the Sogou 2017 Share Incentive Plan was $1.6 million. As of December 31, 2018 there was $4.0 million of unrecognized compensation expense related to unvested Sogou share options. The expense is expected to be recognized over a weighted average period of 2.12 years. The method used to determine the fair value of the Sogou share options granted under the Sogou 2017 Share Incentive Plan was the same as the method used for the share options granted under the Sogou 2010 Incentive Plan as described above, except for the assumptions used in the binomial valuation model as presented below: Assumptions Adopted 2018 Average risk-free interest rate 3.41%~3.95% Exercise multiple 2 Expected forfeiture rate (post-vesting) 12% Weighted average expected option life 10 Volatility rate 40%~46% Dividend yield 0% Weighted average fair value of share options 10.09 Sohu Management Sogou Share Option Arrangement Under an arrangement (the “Sohu Management Sogou Share Option Arrangement”) that was approved by the boards of directors of Sohu and Sogou in March 2011, Sohu has the right to provide to members of Sohu’s Board of Directors, management and other key employees of the Sohu, and certain members of management and other key employees of Sogou the opportunity to purchase from Sohu up to 12,000,000 Sogou Class A Ordinary Shares at a fixed exercise price of $0.625 or $0.001 per share. Of these 12,000,000 Sogou Class A Ordinary Shares, 8,800,000 are Sogou Class A Ordinary Shares previously held by Sohu and 3,200,000 are Sogou Class A Ordinary Shares that were newly-issued on April 14, 2011 by Sogou to Sohu at a price of $0.625 per share, or a total of $2.0 million. As of December 31, 2018, Sohu had contractually granted options for the purchase of 8,305,000 Sogou Class A Ordinary Shares under the Sohu Management Sogou Share Option Arrangement. The options contractually granted under the Sohu Management Sogou Share Option Arrangement may be placed in one of the following two categories: (i) Performance-based options, which vest and become exercisable in four equal installments, with each installment vesting upon a service period requirement being met, as well as the Sogou Group’s achievement of performance targets for the corresponding period. For purposes of recognition of share-based compensation expense, each installment is considered to be granted as of the date that the performance targets have been set; or (ii) Service-based options, which were granted to members of Sohu’s Board of Directors. All of these share options vested and became exercisable in 2015, as the service period requirement had been met. A summary of the above two categories of Sogou’s share options as of December 31, 2018 is presented below: Contractually Granted Vested and Exercised Performance-based options 8,290 8,290 8,290 8,290 Service-based options 15 15 15 6 Total 8,305 8,305 8,305 8,296 A summary of Sogou share option activity under the Sohu Management Sogou Share Option Arrangement as of and for the year ended December 31, 2018 is presented below: Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 9 $ 0.001 7.38 $ Granted 0 Exercised 0 Forfeited or expired 0 Outstanding as of December 31, 2018 9 0.001 6.38 47 Vested as of December 31, 2018 9 0.001 6.38 47 Exercisable as of December 31, 2018 9 0.001 6.38 47 Note (1): The aggregate intrinsic values in the preceding table represent the difference between Sogou’s closing price of $5.25 per Class A ordinary share on December 31, 2018 and the exercise prices of the options. For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for Sogou share options under the Sohu Management Sogou Share Option Arrangement was nil, nil and $0.4 million, respectively. As of December 31, 2018, there was no unrecognized compensation expense related to unvested Sogou share options. For the years ended December 31, 2018, 2017 and 2016, the total fair values of the Sogou share options under the Sohu Management Sogou Share Option Arrangement vested on their respective vesting dates were nil, nil, and $0.5 million, respectively. For the years ended December 31, 2018, 2017 and 2016, total intrinsic value of options exercised was nil, $0.2 million, and $4.5 million, respectively. The method used to determine the fair value of Sogou share options granted under the Sohu Management Sogou Share Option Arrangement was the same as the method used for the Sogou share options granted under the Sogou 2010 Incentive Plan as described above, except for the assumptions used in the binomial valuation model as presented below. There was no share-based compensation expense recognized under the Sohu Management Sogou Share Option Arrangement for the year ended December 31, 2017 and 2018. Assumptions Adopted 2016 Average risk-free interest rate 2.01%~2.15% Exercise multiple 2~3 Expected forfeiture rate (post-vesting) 0% Weighted average expected option life 6 Volatility rate 43%~47% Dividend yield 0% Weighted average fair value of share options 3.02 Option Modification In the first and second quarter of 2013, a portion of the Sogou share options granted under the Sogou 2010 Share Incentive Plan and the Sohu Management Sogou Share Option Arrangement were exercised early, and the resulting Sogou ordinary shares were transferred to trusts with the original option grantees as beneficiaries. The trusts will distribute the Sogou ordinary shares to those beneficiaries in installments based on the vesting requirements under the original option agreements. Although these trust arrangements caused a modification of the terms of these Sogou share options, the modification was not considered substantive. Accordingly, no incremental fair value related to these Sogou ordinary shares resulted from the modification, and the remaining share-based compensation expense for these Sogou ordinary shares continued to be recognized over the original remaining vesting period. As of December 31, 2018, 6,405,000 Sogou Class A Ordinary Shares that were purchased upon the early exercise of options granted under the Sogou 2010 Share Incentive Plan remained unvested in accordance with the vesting requirements under the original option agreements. All Sogou Class A Ordinary Shares issued upon such early exercise that have become vested have been included in the disclosures under the headings “Sogou 2010 Share Incentive Plan” and “Sohu Management Sogou Share Option Arrangement” above. In the first quarter of 2018, Sogou changed the vesting conditions of options for the purchase of 2,181,192 Sogou Class A Ordinary Shares contractually granted under the Sogou 2010 Share Incentive Plan by removing as a condition of vesting Sogou’s achievement of performance targets for the period corresponding to the vesting schedule. Of these options, options for the purchase of 1,601,427 Sogou Class A Ordinary Shares had not been deemed granted, because their performance targets for the current period had not been set, so the removal of the performance targets resulted in these options becoming subject to vesting only upon service-period requirements being met and being deemed granted immediately upon the effectiveness of the changes. For the remaining options for the purchase of 579,765 Sogou Class A Ordinary Shares, which had been deemed granted, the removal of the performance targets constituted a modification. The modification was not considered substantive, because their performance targets had been achieved before the modification. Based on valuation results, no incremental fair value related to these Sogou ordinary shares was recognized in connection with the modification, and the remaining share-based compensation expense for these Sogou ordinary shares continued to be recognized over the remaining vesting period. Sogou Share Repurchase Transaction In January 2017, Sogou repurchased 720,000 of its Pre-IPO Pre-IPO Tencent Share-based Awards Granted to Employees Who Transferred to Sogou with the Soso Search and Search-related Businesses Certain persons who became Sogou employees when Tencent’s Soso search and search-related businesses were transferred to Sogou on September 16, 2013 had been granted restricted share units under Tencent’s share award arrangements prior to the transfer of the businesses. Following the transfer of the businesses, these Tencent restricted share units will continue to vest under the original Tencent share award arrangements provided the transferred employees continue to be employed by Sogou during the requisite service period. After the transfer of the Soso search and search-related businesses to Sogou, Sogou applied the guidance in ASC 505-50 For the years ended December 31, 2018, 2017 and 2016, share-based compensation expense of $0.1 million, $0.7 million and $0.8 million, respectively, related to these Tencent restricted share units was recognized in the Group’s consolidated statements of comprehensive income. As of December 31, 2018, there were no unvested Tencent restricted share units held by employees of Sogou and there was no unrecognized compensation expense related to these unvested restricted share units. 3) Changyou.com Limited Share-based Awards Changyou 2008 Share Incentive Plan Changyou’s 2008 Share Incentive Plan (the “Changyou 2008 Share Incentive Plan”) originally provided for the issuance of up to 2,000,000 Changyou ordinary shares, including Changyou ordinary shares issued pursuant to the exercise of share options and upon vesting and settlement of restricted share units. The 2,000,000 reserved Changyou ordinary shares became 20,000,000 Changyou ordinary shares in March 2009 when Changyou effected a ten-for-one All of the restricted Changyou ordinary shares and restricted share units granted under the Changyou 2008 Share Incentive Plan were vested as of December 31, 2017, as the requisite service period for all these awards had been completed. There has been no share-based compensation expense recognized under the Changyou 2008 Share Incentive Plan since then. Changyou 2014 Share Incentive Plan On June 27, 2014, Changyou reserved 2,000,000 of its Class A ordinary shares under the Changyou.com Limited 2014 Share Incentive Plan (the “Changyou 2014 Share Incentive Plan”) for the purpose of making share incentive awards to certain members of its management and key employees. On November 2, 2014, Changyou’s Board approved an increase in the number of Class A ordinary shares reserved under the Changyou 2014 Share Incentive Plan from 2,000,000 to 6,000,000. The maximum term of any share right granted under the Changyou 2014 Share Incentive Plan is ten years from the grant date. The Changyou 2014 Share Incentive Plan will expire in June 2024. As of December 31, 2018, 3,023,000 shares were available for grant under the Changyou 2014 Share Incentive Plan. i) Summary of Share Option Activity On November 2, 2014, Changyou approved the contractual grant of an aggregate of 2,416,000 Class A restricted share units to certain members of its management and certain other employees. On February 16, 2015, Changyou’s Board of Directors approved the conversion of 2,400,000 of these Class A restricted share units into options for the purchase of Class A ordinary shares at an exercise price of $0.01. On June 1, 2015, Changyou’s Board of Directors approved the contractual grant of options for the purchase of an aggregate of 1,998,000 Class A ordinary shares to certain members of its management and certain other employees at an exercise price of $0.01. On July 28, 2016, Changyou’s Board of Directors approved the contractual grant of options for the purchase of an aggregate of 100,000 Class A ordinary shares to certain member of its management at an exercise price of $0.01. These Changyou share options vest in four equal installments over a period of four years, with each installment vesting upon satisfaction of a service period requirement and the achievement of certain subjective performance targets. These Changyou share options are substantially similar to restricted share units except for the nominal exercise price, which would be zero for restricted share units. Under ASC 718-10-25 ASC 718-10-55 re-measured As of December 31, 2018, 2,718,000 of these Changyou share options had been granted and had become vested on their respective vesting dates, as a mutual understanding of the subjective performance targets had been reached between Changyou and the recipients, the targets had been satisfied, and the service period requirements had been fulfilled. The cumulative share-based compensation expense of $35.4 million for these granted share options was adjusted and fixed based on the aggregate amounts of the fair values of these granted share options at their respective grant dates. A summary of share option activity under the Changyou 2014 Share Incentive Plan as of and for the year ended December 31, 2018 is presented below: Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 947 $ 0.01 7.01 $ 17,240 Granted 719 0.01 Exercised (1,065 ) 0.01 Forfeited or expired 0 Outstanding as of December 31, 2018 601 0.01 5.98 5,487 Vested as of December 31, 2018 601 0.01 5,487 Exercisable as of December 31, 2018 601 0.01 Note (1): The aggregate intrinsic value in the preceding table represents the difference between Changyou’s closing price of $18.28 per ADS, or $9.14 per Class A ordinary share, on December 31, 2018 and the nominal exercise price of the share option. For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for these share options under the Changyou 2014 Share Incentive Plan was negative $6.5 million, $17.4 million and $8.3 million, respectively. For the years ended December 31, 2018, 2017 and 2016, the total fair values of these Changyou share options vested on their respective vesting dates were $5.7 million, $14.8 million and $9.1 million, respectively. For the years ended December 31, 2018, 2017 and 2016, the total intrinsic value of share options exercised was $14.9 million, $10.3 million and $4.3 million, respectively. 4) Sohu Video Share-based Awards On January 4, 2012, Sohu Video adopted the Video 2011 Share Incentive Plan, under which 25,000,000 ordinary shares of Sohu Video are reserved for the purpose of making share incentive awards to management and key employees of Sohu Video and to Sohu management. The maximum term of any share incentive award granted under the Video 2011 Share Incentive Plan is ten years from the grant date. The Video 2011 Share Incentive Plan will expire on January 3, 2022. As of December 31, 2018, grants of options for the purchase of 16,368,200 ordinary shares of Sohu Video had been contractually made and were subject to vesting in four equal installments, with each installment vesting upon a service period requirement being met, as well as Sohu Video’s achievement of performance targets for the corresponding period. For purposes of ASC 718-10-25 For the years ended December 31, 2018, 2017 and 2016, total share-based compensation expense recognized for vested Sohu Video options under the Video 2011 Share Incentive Plan was negative $0.5 million, negative $0.3 million and $0.8 million, respectively. The fair value as of December 31, 2018 and the Sohu Video options contractually granted to management and key employees of Sohu Video and to Sohu management was estimated on the reporting date using the binomial valuation model, with the following assumptions used: Assumptions Adopted 2018 Average risk-free interest rate 3.19 % Exercise multiple 2.8 Expected forfeiture rate (post-vesting) 14 % Weighted average expected option life 3.0 Volatility rate 45.1 % Dividend yield 0 Fair value 0.53

Noncontrolling Interest

Noncontrolling Interest	12 Months Ended
	Dec. 31, 2018
NONCONTROLLING INTEREST [Abstract]
Noncontrolling Interest	18. NONCONTROLLING INTEREST Currently, the noncontrolling interests in the Sohu Group’s consolidated financial statements primarily consist of noncontrolling interests for Sogou and Changyou. Noncontrolling Interest in the Consolidated Balance Sheets As of December 31, 2017 and 2018, noncontrolling interest in the consolidated balance sheets was $1.07 billion and $0.96 billion, respectively. As of December 31, 2017 2018 Sogou $ 623,785 $ 686,503 Changyou 442,818 277,608 Total $ 1,066,603 $ 964,111 Noncontrolling Interest of Sogou As of December 31, 2018 and 2017, noncontrolling interest of Sogou of $686.5 million and $623.8 million, respectively, was recognized in the Sohu Group’s consolidated balance sheets, both representing an economic interest of 67% and 66%, respectively, in Sogou’s net assets held by shareholders other than Sohu and reflecting the reclassification of Sogou’s share-based compensation expense from shareholders’ additional paid-in Noncontrolling Interest of Changyou As of December 31, 2018 and 2017, noncontrolling interest of Changyou of $277.6 million and $442.8 million, respectively, was recognized in the Sohu Group’s consolidated balance sheets, representing a 33% and 32% economic interest for 2018 and 2017, respectively, in Changyou’s net assets held by shareholders other than Sohu and reflecting the reclassification of Changyou’s share-based compensation expense from shareholders’ additional paid-in Noncontrolling Interest in the Consolidated Statements of Comprehensive Income /(Loss) For the years ended December 31, 2018, 2017 and 2016, respectively, the Sohu Group had net income of $92.7 million, net income of $84.5 million and net income of $109.0 million, respectively, attributable to the noncontrolling interest in the consolidated statements of comprehensive income /(loss). Year Ended December 31, 2016 2017 2018 Sogou $ 61,403 $ 77,025 $ 65,586 Changyou 47,645 7,603 27,137 Other 0 (105 ) 0 Total $ 109,048 $ 84,523 $ 92,723 Noncontrolling Interest of Sogou For the years ended December 31, 2018, 2017 and 2016, respectively, a $65.6 million net income, a $77.0 million net income and a $61.4 million net income, respectively, attributable to the noncontrolling interest of Sogou was recognized in the Sohu Group’s consolidated statements of comprehensive income, representing Sogou’s net income /(loss) attributable to shareholders other than Sohu. Noncontrolling Interest of Changyou For the years ended December 31, 2018, 2017 and 2016, respectively, a $27.1 million net income, a $7.6 million net income and a $47.6 million net income, respectively, attributable to the noncontrolling interest of Changyou was recognized in the Sohu Group’s consolidated statements of comprehensive income /(loss), representing a 33%, 32% and 31%, economic interest, respectively, in Changyou attributable to shareholders other than Sohu.

Net Income _(Loss) per Share

Net Income /(Loss) per Share	12 Months Ended
	Dec. 31, 2018
NET INCOME /(LOSS) PER SHARE [Abstract]
Net Income /(Loss) per Share	19. NET INCOME /(LOSS) PER SHARE Basic net income /(loss) per share is computed using the weighted average number of ordinary shares outstanding during the period. Diluted net income /(loss) per share is computed using the weighted average number of ordinary shares and, if dilutive, potential ordinary shares outstanding during the period. Potential ordinary shares comprise shares issuable upon the exercise or settlement of share-based awards using the treasury stock method. The dilutive effect of share-based awards with performance requirements is not considered before the performance targets are actually met. The computation of diluted net income /(loss) per share does not assume conversion, exercise, or contingent issuance of securities that would have an anti-dilutive effect (i.e. an increase in earnings per share amounts or a decrease in loss per share amounts) on net income /(loss) per share. For the years ended December 31, 2016, 2017 and 2018, 232,488, 263,497 and 292,622 ordinary shares, respectively, potentially issuable upon the exercise or settlement of share-based awards using the treasury stock method were anti-dilutive and excluded from the denominator for calculation of diluted net loss per share. Additionally, for purposes of calculating the numerator of diluted net income /(loss) per share, the net income /(loss) attributable to Sohu is adjusted as follows. The adjustment will not be made if there is an anti-dilutive effect. Sogou’s Net Income/(Loss) Attributable to Sohu Before Sogou’s IPO Before Sogou’s IPO, Sogou’s net income /(loss) attributable to Sohu was determined using the percentage that the weighted average number of Sogou shares held by Sohu. represented of the weighted average number of Sogou Pre-IPO Preferred Shares and Sogou Pre-IPO if-converted After Sogou’s IPO After Sogou’s IPO, Sogou’s net income /(loss) attributable to Sohu is determined using the percentage that the weighted average number of Sogou shares held by Sohu represents of the weighted average number of Sogou ordinary shares and shares issuable upon the exercise or settlement of share-based awards under the treasury stock method, and not by using the percentage held by Sohu of the total economic interest in Sogou, which is used for the calculation of basic net income per share. In the calculation of Sohu’s diluted net income /(loss) per share, assuming a dilutive effect, the percentage of Sohu’s shareholding in Sogou was calculated by treating convertible preferred shares issued by Sogou as having been converted at the beginning of the period and unvested Sogou share options with the performance targets achieved as well as vested but unexercised Sogou share options as having been exercised during the period. The dilutive effect of share-based awards with a performance requirement was not considered before the performance targets were actually met. The effect of this calculation is presented as “incremental dilution from Sogou” in the table below. Assuming an anti-dilutive effect, all of these Sogou shares and share options are excluded from the calculation of Sohu’s diluted income /(loss) per share. As a result, Sogou’s net income /(loss) attributable to Sohu on a diluted basis equals the number used for the calculation of Sohu’s basic net income /(loss) per share. For the year ended December 31, 2018, all of the Sogou share options had a dilutive effect, and therefore were included in the calculation of Sohu.com Limited’s diluted net income /(loss) per share. This impact is presented as “incremental dilution from Sogou” in the table below. Changyou’s Net Income/(Loss) Attributable to Sohu Changyou’s net income /(loss) attributable to Sohu is determined using the percentage that the weighted average number of Changyou shares held by Sohu represents of the weighted average number of Changyou ordinary shares and shares issuable upon the exercise or settlement of share-based awards under the treasury stock method, and not by using the percentage held by Sohu of the total economic interest in Changyou, which is used for the calculation of basic net income per share. In the calculation of Sohu’s diluted net income /(loss) per share, assuming a dilutive effect, all of Changyou’s existing unvested restricted share units and share options, and vested restricted share units and share options that have not yet been settled, are treated as vested and settled by Changyou under the treasury stock method, causing the percentage of the weighted average number of shares held by Sohu in Changyou to decrease. As a result, Changyou’s net income /(loss) attributable to Sohu on a diluted basis decreased accordingly. The effect of this calculation is presented as “incremental dilution from Changyou” in the table below. Assuming an anti-dilutive effect, all of these Changyou restricted share units and share options are excluded from the calculation of Sohu’s diluted net income /(loss) per share. As a result, Changyou’s net income /(loss) attributable to Sohu on a diluted basis equals the number used for the calculation of Sohu’s basic net income /(loss) per share. For the year ended December 31, 2018, all of these Changyou restricted share units and share options had an dilutive effect, and therefore were included in the calculation of Sohu.com Limited’s diluted net income /(loss) per share. This impact is presented as “incremental dilution from Changyou” in the table below. The following table presents the calculation of the Sohu Group’s basic and diluted net loss per share (in thousands, except per share data). Year Ended December 31, 2016 2017 2018 Numerator: Net loss attributable to Sohu.com Limited, basic $ (224,021 ) $ (554,526 ) $ (160,082 ) Effect of dilutive securities: Incremental dilution from Sogou 0 (1,233 ) (496 ) Incremental dilution from Changyou (1,639 ) (31 ) (382 ) Net loss attributable to Sohu.com Limited, diluted $ (225,660 ) $ (555,790 ) $ (160,960 ) Denominator: Weighted average basic ordinary shares outstanding 38,706 38,858 38,959 Effect of dilutive securities: Share options and restricted share units 0 0 0 Weighted average diluted ordinary shares outstanding $ 38,706 $ 38,858 $ 38,959 Basic net loss per share attributable to Sohu.com Limited $ (5.79 ) $ (14.27 ) $ (4.11 ) Diluted net loss per share attributable to Sohu.com Limited $ (5.83 ) $ (14.30 ) $ (4.13 )

China Contribution Plan

China Contribution Plan	12 Months Ended
	Dec. 31, 2018
CHINA CONTRIBUTION PLAN [Abstract]
China Contribution Plan	20. CHINA CONTRIBUTION PLAN The Sohu Group’s subsidiaries and consolidated VIEs in China participate in a government-mandated multi-employer defined contribution plan pursuant to which certain retirement, medical and other welfare benefits are provided to employees. Chinese labor regulations require the Group’s subsidiaries and consolidated VIEs to pay to the local labor bureau a monthly contribution at a stated contribution rate based on the monthly compensation of qualified employees. The relevant local labor bureau is responsible for meeting all retirement benefit obligations; the Group’s China-based subsidiaries and consolidated VIEs have no further commitments beyond their monthly contributions. For the years ended December 31, 2018, 2017 and 2016, the Group’s China based subsidiaries and consolidated VIEs contributed a total of $152.3 million, $139.2 million and $131.6 million, respectively, to these funds.

Profit Appropriation

Profit Appropriation	12 Months Ended
	Dec. 31, 2018
PROFIT APPROPRIATION [Abstract]
Profit Appropriation	21. PROFIT APPROPRIATION The Sohu Group’s China-based subsidiaries and VIEs are required to make appropriations to certain non-distributable In accordance with the China Foreign Investment Enterprises laws, those of the Group’s China-based subsidiaries that are considered under PRC law to be WFOEs are required to make appropriations from their after-tax “after-tax-profit non-distributable after-tax-profit Pursuant to the China Company Laws, those of the Group’s China-based subsidiaries that are considered under PRC law to be domestically funded enterprises, as well as the Group’s VIEs, are required to make appropriations from their after-tax-profit non-distributable after-tax-profit Upon certain regulatory approvals and subject to certain limitations, the general reserve fund and the statutory surplus fund can be used to offset prior year losses, if any, and can be converted into paid-in capital of the applicable entity. For the years ended December 31, 2018, 2017 and 2016, the total amount of profits contributed to these funds by the Group was $7.3 million, $12.0 million and $4.3 million, respectively. As of December 31, 2018 and 2017, the total amount of profits contributed to these funds by the Group was $70.3 million and $63.0 million, respectively. As a result of these and other restrictions under PRC laws and regulations, the Group’s China-based subsidiaries and VIEs are restricted in their ability to transfer a portion of their net assets in the form of non-distributable

Concentration Risks

Concentration Risks	12 Months Ended
	Dec. 31, 2018
CONCENTRATION RISKS [Abstract]
Concentration Risks	22. CONCENTRATION RISKS Because its operations are substantially conducted in the PRC, the Sohu Group is subject to PRC-related Operation Risk For the years ended December 31, 2018, 2017 and 2016, there were no revenues from customers that individually represent greater than 10% of the total online advertising revenues. For the year ended December 31, 2018, revenues from TLBB were $200.9 million, accounting for approximately 52% of Changyou’s online game revenues, approximately 41% of Changyou’s total revenues and approximately 11% of the Sohu Group’s total revenues. For the year ended December 31, 2018, revenues from Legacy TLBB Mobile were $101.6 million, accounting for approximately 26% of Changyou’s online game revenues, approximately 21% of Changyou’s total revenues, and approximately 5% of the Sohu Group’s total revenues. Financial instruments that potentially subject the Sohu Group to concentration risks consist primarily of cash and cash equivalents and short-term investments. Cash and cash equivalents in Sohu Group are mainly denominated in RMB and in U.S. dollars. Short-term investments are denominated in RMB. The Group may experience economic losses and negative impacts on earnings and equity as a result of fluctuations in the exchange rate between the U.S. dollar and the RMB. Moreover, the Chinese government imposes controls on the convertibility of RMB into foreign currencies and, in certain cases, the remittance of currency out of the PRC. The Group may experience difficulties in completing the administrative procedures necessary to obtain and remit foreign currency. Credit Risk As of December 31, 2018, approximately 60% of the Sohu Group’s cash and cash equivalents and short-term investments were held in 17 financial institutions in Mainland China. The remaining cash and cash equivalents and short-term investments were held primarily in financial institutions in Hong Kong and Macao. As of December 31, 2017, approximately 58% of the Sohu Group’s cash and cash equivalents and short-term investments were held in 19 financial institutions in Mainland China. The remaining cash and cash equivalents and short-term investments were held primarily in financial institutions in Hong Kong and Macao. The Sohu Group holds its cash and bank deposits at Chinese financial institutions that are among the largest and most respected in the PRC and at international financial institutions with high ratings from internationally-recognized rating agencies. The management chooses these institutions because of their reputations and track records for stability, and their known large cash reserves, and management periodically reviews these institutions’ reputations, track records, and reported reserves. Management expects that any additional institutions that the Sohu Group uses for its cash and bank deposits will be chosen with similar criteria for soundness. As a further means of managing its credit risk, the Sohu Group holds its cash and bank deposits in a number of different financial institutions. As of December 31, 2018 and 2017, the Sohu Group held its cash and bank deposits in different financial institutions and held no more than approximately 35% and 30%, respectively, of its total cash at any single institution. Under PRC law, it is generally required that a commercial bank in the PRC that holds third party cash deposits protect the depositors’ rights over and interests in their deposited money; PRC banks are subject to a series of risk control regulatory standards; and PRC bank regulatory authorities are empowered to take over the operation and management of any PRC bank that faces a material credit crisis. For the credit risk related to accounts receivable, the Sohu Group performs ongoing credit evaluations of its customers and, if necessary, maintains reserves for potential credit losses. Historically, such losses have been within management’s expectations.

Restricted Net Assets

Restricted Net Assets	12 Months Ended
	Dec. 31, 2018
RESTRICTED NET ASSETS [Abstract]
Restricted Net Assets	23. RESTRICTED NET ASSETS Relevant PRC law and regulations permit payment of dividends by PRC-based PRC-based after-tax PRC-based PRC-based

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
SUBSEQUENT EVENTS [Abstract]
Subsequent Events	24. SUBSEQUENT EVENTS On March 15, 2019, Changyou’s board of directors approved a plan for Changyou to cease operation of RaidCall. The shutdown of RaidCall will not be recorded as a discontinued operation, and Changyou does not expect to incur additional expenses for RaidCall, other than out-of-pocket

Additional Information - Conden

Additional Information - Condensed Financial Statements	12 Months Ended
	Dec. 31, 2018
ADDITIONAL INFORMATION - CONDENSED FINANCIAL INFORMATION OF REGISTRANT [Abstract]
Additional - Condensed Financial Information of Registrant	25. ADDITIONAL INFORMATION — CONDENSED FINANCIAL STATEMENTS The condensed financial statements of Sohu.com Limited have been prepared in accordance with Securities and Exchange Commission Regulation S-X 5-04 12-04. The Company records its investments in subsidiaries and VIEs under the equity method of accounting. Such investments and long-term loans to subsidiaries and VIEs are presented on the balance sheet as “Interests in subsidiaries and VIEs” and the loss of the subsidiaries and VIEs is presented as “Share of loss of subsidiaries and VIEs” in the statement of comprehensive income. The footnote disclosures contain supplemental information relating to the operations of the Company and, as such, these financial statements should be read in conjunction with the notes to the Consolidated Financial Statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. As of December 31, 2017 and 2018, there were no material contingencies, significant provisions for long-term obligations, or guarantees of the Company, except for those, if any, which have been separately disclosed in the consolidated financial statements. SOHU.COM LIMITED CONDENSED BALANCE SHEETS (In thousands) As of December 31, 2017 2018 ASSETS Current assets: Cash and cash equivalents $ 2,845 $ 16,492 Prepaid and other current assets 2,285 1,169 Due from subsidiaries and VIEs 3,806 470,649 Total current assets 8,936 488,310 Interests in subsidiaries and VIEs 971,163 224,679 Other assets, net 0 27,736 Total assets $ 980,099 $ 740,725 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities 5,482 7,471 Long-term liabilities 223,983 144,414 Total liabilities 229,465 151,885 Shareholders’ equity: Ordinary Shares: $0.001 par value per share (75,400 shares authorized; 38,898 shares and 39,229 shares, respectively, issued and outstanding as of December 31, 2017 and 2018) 45 39 Additional paid-in 1,098,455 958,883 Treasury stock (5,890 shares and nil as of December 31, 2017 and 2018, respectively) (143,858 ) 0 Accumulated other comprehensive income 38,212 24,719 Accumulated deficit (242,220 ) (394,801 ) Total shareholders’ equity 750,634 588,840 Total liabilities and shareholders’ equity $ 980,099 $ 740,725 SOHU.COM LIMITED CONDENSED STATEMENTS OF COMPREHENSIVE LOSS (In thousands) Year Ended December 31, 2016 2017 2018 Revenues $ 0 $ 0 $ 0 Cost of revenues 0 0 0 Gross profit 0 0 0 Operating expenses: General and administrative 8,845 8,824 12,206 Operating loss (8,845 ) (8,824 ) (12,206 ) Share of loss of subsidiaries and VIEs (217,408 ) (331,106 ) (232,307 ) Other income /(expense) (54 ) 71 22 Interest income 107 152 5,865 Loss before income tax expense/(benefit) (226,200 ) (339,707 ) (238,626 ) Income tax expense/(benefit) (2,179 ) 214,819 (78,544 ) Net loss (224,021 ) (554,526 ) (160,082 ) Other comprehensive income /(loss) (46,931 ) 34,992 (13,494 ) Comprehensive loss $ (270,952 ) $ (519,534 ) $ (173,576 ) SOHU.COM LIMITED CONDENSED STATEMENTS OF CASH FLOWS (In thousands) Year Ended December 31, 2016 2017 2018 Cash flows from operating activities: Net loss $ (224,021 ) $ (554,526 ) $ (160,082 ) Adjustments to reconcile net loss to net cash provided by operating activities: Investment loss from subsidiaries and VIEs 217,408 331,106 232,307 Share-based compensation expense /(benefit) 1,309 (814 ) (1,916 ) Others 0 0 (993 ) Changes in current assets and liabilities: Due from subsidiaries and VIEs 0 0 (2,963 ) Prepaid and other current assets 842 3,933 (3,996 ) Tax liabilities (2,014 ) 222,350 (79,569 ) Accrued liabilities (630 ) (8,194 ) 1,892 Net cash used in operating activities (7,106 ) (6,145 ) (15,320 ) Net decrease in cash, cash equivalents, restricted cash and restricted time deposits (7,106 ) (6,145 ) (15,320 ) Cash, cash equivalents, restricted cash and restricted time deposits at beginning of year 16,096 8,990 2,845 Cash and cash equivalents, restricted cash and restricted time deposits of Sohu.com Limited at the date of the liquidation of Sohu.com Inc. 0 0 29,207 Cash, cash equivalents, restricted cash and restricted time deposits at end of year $ 8,990 $ 2,845 $ 16,732 Reconciliation of cash, cash equivalents, and restricted time deposits to the condensed balance sheets: Cash and cash equivalents $ 8,990 $ 2,845 $ 16,492 Restricted time deposits included in other assets 0 0 240 Total cash, cash equivalents, restricted cash and restricted time deposits at end of year $ 8,990 $ 2,845 $ 16,732

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Polices)	12 Months Ended
	Dec. 31, 2018
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Accounting Standards	Accounting Standards The consolidated financial statements have been prepared in accordance with United States of America generally accepted accounting principles (“U.S. GAAP”) to reflect the financial position and results of operations of the Sohu Group.
Use of Estimates	Use of Estimates The preparation of these financial statements requires the Sohu Group to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, costs and expenses, and related disclosures. On an on-going
Basis of Consolidation and Recognition of Noncontrolling Interest	Basis of Consolidation and Recognition of Noncontrolling Interest The Sohu Group’s consolidated financial statements include the accounts of the Company and its subsidiaries and consolidated VIEs. All intra-Group transactions are eliminated. VIE Consolidation The Sohu Group’s VIEs are wholly or partially owned by certain employees of the Group as nominee shareholders. For consolidated VIEs, management made evaluations of the relationships between the Sohu Group and the VIEs and the economic benefit flow of contractual arrangements with the VIEs. In connection with such evaluation, management also took into account the fact that, as a result of such contractual arrangements, the Group controls the shareholders’ voting interests in these VIEs. As a result of such evaluation, management concluded that the Sohu Group is the primary beneficiary of its consolidated VIEs. Noncontrolling Interest Recognition Noncontrolling interests are recognized to reflect the portion of the equity of subsidiaries and VIEs which is not attributable, directly or indirectly, to the controlling shareholders. Currently, the noncontrolling interests in the Sohu Group’s consolidated financial statements primarily consist of noncontrolling interests for Sogou and Changyou. Noncontrolling Interest for Sogou Prior to the completion of Sogou’s IPO in November 2017, the Company controlled the election of a majority of the Board of Directors of Sogou pursuant to a shareholders’ agreement that expired upon completion of the IPO. Following the completion of Sogou’s IPO, pursuant to the Voting Agreement and Sogou’s Third Amended and Restated Articles of Association, the Company still has the right to appoint a majority of Sogou’s Board of Directors. As Sogou’s controlling shareholder, the Company consolidates Sogou in its consolidated financial statements, and recognizes noncontrolling interest reflecting economic interests in Sogou held by shareholders other than it (the “Sogou noncontrolling shareholders”). Sogou’s net income /(loss) attributable to the Sogou noncontrolling shareholders is recorded as noncontrolling interest in its consolidated statements of comprehensive income. Noncontrolling Interest Recognition before Sogou’s IPO Based on the principles of allocation of Sogou’s profit and loss set forth below, Sogou’s cumulative results of operations attributable to the Sogou noncontrolling shareholders, along with changes in shareholders’ equity/(deficit) and adjustments for share-based compensation expense in relation to those share-based awards that were unvested and vested but not yet settled and the Sogou noncontrolling shareholders’ investments in Sogou Series A Preferred Shares outstanding before Sogou’s IPO (“Sogou Pre-IPO Pre-IPO Pre-IPO Pre-IPO Pre-IPO Principles of Allocation of Sogou’s Profit and Loss - By virtue of the terms of the Sogou Pre-IPO Pre-IPO Pre-IPO (i) net losses were allocated to holders of the Sogou Pre-IPO Pre-IPO (ii) additional net losses were allocated to holders of the Sogou Pre-IPO (iii) additional net losses were allocated to the holder of the Sogou Pre-IPO (iv) further net losses were allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou. Net income from Sogou was allocated in the following order before Sogou’s IPO: (i) net income was allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou until their basis in Sogou increased to zero; (ii) additional net income was allocated to the holder of the Sogou Pre-IPO (iii) additional net income was allocated to holders of the Sogou Pre-IPO (iv) further net income was allocated to holders of the Sogou Pre-IPO Pre-IPO (v) further net income was allocated between Sohu and noncontrolling shareholders based on their shareholding percentage in Sogou. Noncontrolling Interest Recognition after Sogou’s IPO Sogou’s cumulative results of operations attributable to the Sogou noncontrolling shareholders, based on their share of the economic interest in Sogou, along with changes in shareholders’ equity and adjustment for share-based compensation expense in relation to share-based awards that are unvested and vested but not yet settled and adjustment for changes in the Sohu Group’s ownership percentage in Sogou, are recorded as noncontrolling interest in the Sohu Group’s consolidated balance sheets. Noncontrolling Interest for Changyou As of the date of this report, Sohu holds approximately 67% of the combined total of Changyou’s outstanding ordinary shares, and controls approximately 95% of the total voting power in Changyou. As Changyou’s controlling shareholder, Sohu consolidates Changyou in its consolidated financial statements, and recognizes noncontrolling interest reflecting the economic interest in Changyou held by shareholders other than the Company (the “Changyou noncontrolling shareholders”). Changyou’s net income /(loss) attributable to the Changyou noncontrolling shareholders is recorded as noncontrolling interest in the Sohu Group’s consolidated statements of comprehensive income, based on the noncontrolling shareholders’ share of the economic interest in Changyou. Changyou’s cumulative results of operations attributable to the Changyou noncontrolling shareholders, along with changes in shareholders’ equity, adjustment for share-based compensation expense in relation to those share-based awards which are unvested and vested but not yet settled and adjustment for changes in the Company’s ownership in Changyou, are recorded as noncontrolling interest in the Sohu Group’s consolidated balance sheets. Segment Reporting The Sohu Group’s segments are business units that offer different services and are reviewed separately by the chief operating decision maker (the “CODM”), or the decision making group, in deciding how to allocate resources and in assessing performance. The Group’s CODM is the Company’s Chief Executive Officer.
Revenue Recognition	Revenue Recognition Impact of Adoption of ASC 606 On January 1, 2018, the Sohu Group adopted ASC 606, applying the modified retrospective method to contracts that were not completed as of January 1, 2018. The adoption of ASC 606 did not have a material impact on the Company’s accumulated deficit as of January 1, 2018. Results for reporting periods beginning on or after January 1, 2018 are presented under ASC 606, while prior-period amounts are not adjusted and continue to be reported in accordance with the Group’s historic accounting under ASC 605. Under ASC 605, advertising-for-advertising advertising-for-advertising The following table illustrates the effect of the adoption of ASC 606 by presenting a comparison of selected line items from the Group’s consolidated statement of comprehensive income for the year ended December 31, 2018, as actually reported and as they would have been reported under ASC 605 without the adoption of ASC 606 (in thousands, except per share data): As reported Without adoption of Effect of change Higher/(Lower) Revenue-Online advertising-Brand advertising $ 231,945 228,165 3,780 Revenue-Online advertising-Search and search related advertising 1,022,456 1,000,639 21,817 Cost of revenue- Online advertising-Search and search related advertising 664,164 642,920 21,244 Gross profit 811,308 811,308 0 Operating expenses- Sales and marketing 400,579 396,226 4,353 Operating loss (160,525 ) (160,525 ) 0 Income tax expense 13,432 13,432 0 Net loss (67,359 ) (67,359 ) 0 Basic net loss per share attributable to Sohu.com Limited (4.11 ) (4.11 ) 0 Diluted net loss per share attributable to Sohu.com Limited (4.13 ) (4.13 ) 0 The adoption of ASC 606 did not change the Group’s consolidated balance sheet, consolidated statement of cash flows, or consolidated statement of changes in equity as of, or for the year ended, December 31, 2018. Revenues are recognized when control of the promised goods or services is transferred to the Group’s customers, in an amount that reflects the consideration the Group expects to be entitled to in exchange for those goods or services. The recognition of revenues involves certain management judgments, including estimated lives of virtual items purchased by game players, the estimation of the fair value of an advertising-for-advertising licensed-out The following table presents the Group’s revenues disaggregated by products and services: Year Ended December 31, 2018 (in thousands) Year Ended December 31, 2017 (in thousands) Sohu Sogou Changyou Total Sohu Sogou Changyou Total Brand advertising: Sohu Media Portal $ 127,348 0 0 127,348 $ 151,982 0 0 151,982 Sohu Video 53,756 0 0 53,756 79,743 0 0 79,743 Focus 31,144 0 0 31,144 57,245 0 0 57,245 17173.com Website 0 0 19,697 19,697 0 0 25,096 25,096 Search and search related advertising 0 1,022,456 0 1,022,456 0 801,199 0 801,199 Online games: PC games 0 0 236,743 236,743 0 0 239,149 239,149 Mobile games 0 0 151,737 151,737 0 0 208,355 208,355 Other games 0 0 1,308 1,308 0 0 2,029 2,029 Others: Cinema advertising business 0 0 70,202 70,202 0 0 91,419 91,419 Others 61,975 100,589 6,074 168,638 83,758 106,807 14,180 204,745 Total $ 274,223 1,123,045 485,761 1,883,029 $ 372,728 908,006 580,228 1,860,962 As noted above, in accordance with the modified retrospective method upon adoption of ASC 606, prior-period amounts were not adjusted. Online Advertising Revenues Online advertising revenues include revenues from brand advertising services as well as search and search-related advertising services. Certain customers may receive sales rebates, which are accounted for as variable consideration. The Group estimates annual the expected revenue volume from each agent with reference to its historical results. Sales rebates will reduce revenues recognized. The Group recognizes revenue for the amount of fees it receives from its advertisers, after deducting sales rebates and net of value-added tax (“VAT”). The Group believes that there will not be significant changes to its estimates of variable consideration. Brand Advertising Revenues Revenue Recognition of Multiple Performance Obligations The Group’s contracts with customers may include multiple performance obligations. For such arrangements, the Group allocates revenues to each performance obligation based on its relative standalone selling price. The Group generally determines the standalone selling price of each distinct performance obligation based on the prices charged to customers when sold on a standalone basis. Where a standalone selling price is not directly observable, the Group generally estimates the selling price based on the prices at which performance obligations of a similar nature and geography are charged to customers. Most of such contracts have all performance obligations completed within the same quarter. Pricing Model Through PCs and mobile devices, the Group provides advertisement placements to its advertisers on different Internet platforms and in different formats, which include banners, links, logos, buttons, full screen, pre-roll, mid-roll, in-feed Currently the Group has three main types of pricing models, consisting of the Fixed Price model, the Cost Per Impression (“CPM”) model and the Cost Per click (“CPC”) model. (i) Fixed Price model Under the Fixed Price model, a contract is signed to establish a fixed price for the advertising services to be provided. Given that the advertisers benefit from displayed advertisements evenly over the period the advertisements are displayed, the Group recognizes revenue on a straight-line basis over the period of display, provided all revenue recognition criteria have been met. (ii) CPM model Under the CPM model, the unit price for each qualifying display is fixed and stated in the contract with the advertiser. A qualifying display is defined as the appearance of an advertisement, where the advertisement meets criteria specified in the contract. Given that the fees are priced consistently throughout the contract and the unit prices are fixed in accordance with the Group’s pricing practices for similar advertisers, the Group recognizes revenue based on the fixed unit prices and the number of qualifying displays upon their occurrence, provided all revenue recognition criteria have been met. (iii) CPC model Under the CPC model, there is no fixed price for advertising services stated in the contract with the advertiser and the unit price for each click is auction-based. The Group charges advertisers on a per-click Search and Search-related Advertising Revenues Search and search-related services consist primarily of search and search-related advertising services offered by Sogou. Pay-for-click Pay for click services enable advertisers’ promotional links to be displayed on Sogou search result pages and other Internet properties and third parties’ Internet properties where the links are relevant to the subject and content of searches and such properties. For pay for click services, Sogou introduces Internet users to its advertisers through auction-based systems and charges advertisers on a per-click pay-for-click pay-for-click per-click Other Online Advertising Services Other online advertising services mainly consist of displaying advertisers’ promotional links on Sogou’s Internet properties. For time-based advertising services, the Sogou’s performance obligation is satisfied over time when the advertising links are displayed over the contract periods, and revenue is normally recognized on a straight-line basis over the contracted display period. For performance-based advertising services, for example, advertisers are charged based on the times that users download from the displayed links, Sogou’s performance obligation is satisfied at the point in time when the promised performance is completed, and the revenue is recognized upon the completion of the promised performance. Sogou’s online advertising services expand distribution of advertisers’ promotional links and advertisements by leveraging traffic on third parties’ Internet properties, including Web content, software, and mobile applications. Sogou is the principal in such arrangement because its promise to advertisers is to provide the advertising services itself rather than to arrange for the advertising services to be provided by third parties on their Internet properties. Payments made to operators of third-party Internet properties are included in traffic acquisition costs. Online Game Revenues Changyou’s online game revenues are generated primarily from its self-operated and licensed-out in-game Changyou is the principal of its self-operated games. Changyou hosts the games on its own servers and is responsible for the sale and marketing of the games as well as customer service. Accordingly, revenues are recorded gross of revenue sharing-payments to third-party developers and/or mobile APP stores, but net of VAT and discounts to game card distributors where applicable. Changyou obtains revenues from the sale of in-game PC Games Proceeds from Changyou’s self-operated PC games are collected from players and third-party game card distributors through sales of Changyou’s game points on its online payment platform and prepaid game cards. Changyou’s self-operated PC games are either developed in house or licensed from third-party developers. For licensed PC games, Changyou remits a pre-agreed Mobile Games Self-operated Mobile Games For self-operated mobile games, Changyou sells game points to its game players via third-party mobile APP stores. The mobile APP stores in turn pay Changyou proceeds after deducting their share of pre-agreed Changyou’s self-operated mobile games are either developed in house or licensed from or jointly developed with third-party developers. For licensed and jointly-developed mobile games, Changyou remits a pre-agreed Licensed Out Mobile Games Changyou also authorizes third parties to operate its mobile games. Licensed out games mainly include mobile games developed in house, such as Changyou’s mobile game Legacy TLBB Mobile, and mobile games jointly developed with third-party developers. Changyou receives monthly revenue-based royalty payments from the third-party licensee operators. Changyou receives additional up-front pre-agreed Other Revenues Sohu Other revenues attributable to Sohu consist primarily of revenues from paid subscription services, interactive broadcasting services, and content provided through the platforms of the three main telecommunications operators in China. Sogou Other revenues attributable to Sogou are IVAS revenues, which are mainly from the operation of Web games and mobile games developed by third parties and the provision of online reading services, and revenues from other products and services, including smart hardware. Changyou Other revenues attributable to Changyou are primarily from its cinema advertising business and from IVAS. In its cinema advertising business, Changyou provides clients advertising placements in slots that are shown in theaters before the screening of movies. The rights to place advertisements in such advertising slots are granted to Changyou, which takes inventory risk under the contracts Changyou signs with different theaters. Changyou charges its advertising clients fees either on a per advertising-slot basis or a fixed amount for an agreed-upon number of slots during a specified contract period. When delivery of the advertising service is confirmed by the customers by their signing a form, revenues from cinema advertising are recognized based on a percentage of the advertising slots actually delivered or on a straight-line basis over the contract period. As Changyou is considered to be the principal in the arrangements with the theaters, the fees paid to the theaters are recognized as cost of revenues. Changyou provides IVAS primarily through software applications for PCs and mobile devices offered by RaidCall. Prior to March 2018, IVAS revenues also included revenues generated from the Dolphin Browser operated by MoboTap. Revenues from IVAS are recognized during the period the services are rendered or items are consumed under the gross method, as Changyou is the principal obligor for provision of the services. Contract Balances Timing of revenue recognition may differ from the timing of invoicing to customers. Accounts receivable represent amounts invoiced and revenue recognized prior to invoicing, when the Group has satisfied its performance obligations and has the unconditional right to payment. The allowance for doubtful accounts and authorized credits is estimated based upon the Group’s assessment of various factors, including historical experience, the age of the accounts receivable balances, current economic conditions and other factors that may affect the Group’s customers’ ability to pay. Contract assets as of December 31, 2018 were not material. The allowance for doubtful accounts and authorized credits was $16.9 million and $5.7 million, respectively, as of December 31, 2018 and December 31, 2017. Receipts in advance and deferred revenue relate to unsatisfied performance obligations at the end of the period and primarily consist of fees received from game players in the online game business and from advertisers in the search and search-related advertising business. Due to the generally short-term duration of the contracts, the majority of the performance obligations are satisfied in the following reporting period. The amount of revenue recognized that was included in the receipts in advance and deferred revenue balance at the beginning of the period was $111.7 million for the year ended December 31, 2018. There was no significant change in the contract assets and contract liability balances during 2018. Revenue recognized in 2018 from performance obligations related to prior years was not material. Practical Expedients The Group has used the following practical expedients as allowed under ASC 606: (i) The transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied has not been disclosed, as substantially all of the Group’s contracts have a duration of one year or less. (ii) Payment terms and conditions vary by contract type, although terms generally include a requirement of prepayment or payment within one year or less. In instances where the timing of revenue recognition differs from the timing of invoicing, the Group has determined that its contracts generally do not include a significant financing component. (iii) The Group applied the portfolio approach in determining the commencement date of consumption and the estimated lives of virtual items for the recognition of games revenue, given that the effect of applying a portfolio approach to a group game players’ behaviors would not differ materially from considering each one of them individually. (iv) The Group generally expenses sales commissions when incurred because the amortization period would be one year or less. These costs are recorded within sales and marketing expenses.
Cost of Revenues	Cost of Revenues Cost of Online Advertising Revenues Cost of online advertising revenues includes cost of revenues from brand advertising services as well as cost of revenues from search and search-related services. Cost of Brand Advertising Revenues Cost of brand advertising revenues mainly consists of content and license costs, salary and benefits expenses, and bandwidth leasing costs. For self-developed video content, production costs incurred in excess of the amount of revenue contracted for are expensed as incurred. Cost of Search and Search-related Advertising Revenues Cost of search and search-related advertising revenues mainly consists of traffic acquisition costs, bandwidth leasing costs, depreciation expenses, salary and benefits expenses, and share-based compensation expense. Traffic acquisition costs consist primarily of payments to third parties that direct search queries of the users to Internet properties of Sogou or distribute Sogou advertisers’ promotional links through such third parties’ Internet properties. The traffic acquisitions costs for such arrangements consist primarily of fees that Sogou pays to the third parties based on an agreed-upon unit price and revenue-sharing payments that Sogou makes to such third parties based on an agreed-upon Cost of Online Game Revenues Cost of online game revenues mainly consists of revenue-sharing payments, salary and benefits expenses, bandwidth leasing costs, content and license costs, tax surcharges, depreciation and amortization expenses, and other direct costs. Cost of Other Revenues Cost of other revenues mainly consists of payments to theaters for pre-film
Product Development Expenses	Product Development Expenses Product development expenses mainly consist of salary and benefits expenses, technical service fees, content and license costs, facilities expenses, and depreciation and amortization expenses. These expenses are incurred for the enhancement and maintenance of the Sohu Group’s Internet platforms as well as for its products and services. The development costs of online games are expensed as incurred, including the development costs of online games prior to the establishment of technological feasibility and maintenance costs after the online games are available for marketing.
Sales and Marketing Expenses	Sales and Marketing Expenses Sales and marketing expenses mainly consist of advertising and promotional expenses, salary and benefits expenses, travelling and entertainment expenses, and facilities expenses. Advertising and promotional expenses generally represent the expenses of promotions to create or stimulate a positive image of the Sohu Group or a desire to subscribe for the Group’s products and services. Advertising and promotional expenses are expensed as incurred.
General and Administrative Expenses	General and Administrative Expenses General and administrative expenses mainly consist of salary and benefits expenses, professional fees, bad debts, travelling and entertainment expenses, depreciation and amortization expenses, and facilities expenses
Share-based Compensation Expense	Share-based Compensation Expense Sohu (excluding Sohu Video), Sogou, Changyou, and Sohu Video have incentive plans for the granting of share-based awards, including share options and restricted share units, to members of the boards of directors, management and other key employees. For share-based awards for which a grant date has occurred, share-based compensation expense is recognized as costs and expenses in the consolidated statements of comprehensive income based on the fair value of the related share-based awards on their grant dates. For share-based awards for which the service inception date precedes the grant date, share-based compensation expense is recognized as costs and expenses in the consolidated statements of comprehensive income beginning on the service inception date and is re-measured Sohu (excluding Sohu Video), Sogou, and Changyou Share-based Awards Sohu (excluding Sohu Video) Share-based Awards In determining the fair values of share options granted by Sohu (excluding Sohu Video) as share-based awards, the public market price of the underlying shares at each reporting date was used, and a binomial valuation model was applied. In determining the fair value of restricted share units granted, the public market price of the underlying shares on the grant dates was applied. Upon the dissolution of Sohu.com Inc. on May 31, 2018, Sohu.com Limited assumed all then existing obligations of Sohu.com Inc. with respect to equity incentive awards that had been granted under Sohu.com Inc.’s Amended and Restated 2010 Stock Incentive Plan (the “Sohu 2010 Stock Incentive Plan”) and remained outstanding, and such awards were converted into the right to receive upon exercise or settlement Sohu.com Limited’s ordinary shares under the Sohu.com Limited 2018 Share Incentive Plan (the “Sohu 2018 Share Incentive Plan”) rather than shares of the common stock of Sohu.com Inc., subject to the other terms of such outstanding awards. Options for the purchase of Sohu.com Limited’s ordinary shares, including options converted from those contractually granted under the Sohu 2010 Stock Incentive Plan, are subject to vesting in four equal installments over a period of four years, with each installment vesting upon satisfaction of a service period requirement and certain subjective performance targets. Under ASC 718-10-25, 718-10-55, re-measured Sogou Share-based Awards In determining the fair value of share options granted by Sogou as share-based awards, a binomial valuation model was applied. The determination of the fair value is affected by the fair value of the ordinary shares as well as assumptions regarding a number of complex and subjective variables, including risk-free interest rates, exercise multiples, expected forfeiture rates, expected share price volatility rates, and expected dividends. Before the completion of Sogou’s IPO, the fair values of the ordinary shares were assessed using the income approach/discounted cash flow method or based on the mid-point 505-50 Changyou Share-based Awards In determining the fair value of ordinary shares and restricted share units granted by Changyou as share-based awards in 2008, the income approach /discounted cash flow method with a discount for lack of marketability was applied, given that the shares underlying the awards were not publicly traded at the time of grant. Changyou’s 2008 Share Incentive Plan expired in August 2018 and is no longer available for granting new share-based awards. In determining the fair value of restricted share units granted after Changyou’s IPO, the public market price of the underlying shares on the grant dates was applied. Options for the purchase of Changyou Class A ordinary shares contractually granted under the Changyou 2014 Share Incentive Plan are subject to vesting in four equal installments over a period of four years, with each installment vesting upon satisfaction of a service period requirement and certain subjective performance targets. Under ASC 718-10-25, 718-10-55, re-measured Compensation Expense Recognition For options and restricted share units granted with respect to Sohu (excluding Sohu Video) shares and Changyou shares, compensation expense is recognized on an accelerated basis upon the requisite service period and certain subjective performance targets being met. For share options granted with respect to Sogou shares, compensation expense is recognized over the estimated period during which the service period requirement and performance target will be met, which is usually within one year, or, after the performance target of Sogou’s completion of an IPO was met upon the completion of Sogou’s IPO on November 13, 2017, on an accelerated basis over the requisite service period, or, for options with only service period requirement, on an accelerated basis over the requisite service period. For Tencent restricted share units that Tencent had granted to employees who transferred to Sogou with the Soso search and search-related businesses, compensation expense is recognized by Sogou on an accelerated basis over the requisite service period, and the fair value of the share-based compensation is re-measured Sohu Video Share-based Awards On January 4, 2012, Sohu Video, the holding entity of Sohu’s video division, adopted a 2011 Share Incentive Plan (the “Video 2011 Share Incentive Plan”) which provides for the issuance of up to 25,000,000 ordinary shares of Sohu Video (representing approximately 10% of the outstanding Sohu Video shares on a fully-diluted basis) to management and key employees of the video division and to Sohu management. As of December 31, 2018, grants of options for the purchase of 16,368,200 ordinary shares of Sohu Video had been contractually made, of which options for the purchase of 4,972,800 ordinary shares were vested. For purposes of ASC 718-10-25, 718-10-55, re-measured, re-measure,
Taxation	Taxation PRC Corporate Income Taxes Income taxes are accounted for using an asset and liability approach which requires the recognition of income taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in the Group’s financial statements or tax returns. Deferred income taxes are determined based on the differences between the accounting basis and the tax basis of assets and liabilities and are measured using the currently enacted tax rates and laws. Deferred tax assets are reduced by a valuation allowance, if based on available evidence, it is considered that it is more likely than not that some portion of or all of the deferred tax assets will not be realized. In making such determination, the Group considers factors including future reversals of existing taxable temporary differences, future profitability, and tax planning strategies. If events were to occur in the future that would allow the Group to realize more of its deferred tax assets than the presently recorded net amount, an adjustment would be made to the deferred tax assets that would increase income for the period when those events occurred. If events were to occur in the future that would require the Group to realize less of its deferred tax assets than the presently recorded net amount, an adjustment would be made to the valuation allowance against deferred tax assets that would decrease income for the period when those events occurred. Significant management judgment is required in determining income tax expense and deferred tax assets and liabilities. The Group’s deferred tax assets are related to net operating losses and temporary differences between accounting basis and tax basis for its China-Based Subsidiaries and VIEs, which are subject to corporate income tax in the PRC under the PRC Corporate Income Tax Law (the “CIT Law”). PRC Withholding Tax on Dividends The CIT Law imposes a 10% withholding income tax on dividends distributed by foreign invested enterprises in the PRC to their immediate holding companies outside Mainland China. A lower withholding tax rate may be applied if there is a tax treaty between Mainland China and the jurisdiction of the foreign holding company. A holding company in Hong Kong, for example, will be subject to a 5% withholding tax rate under an arrangement between the PRC and the Hong Kong Special Administrative Region on the “Avoidance of Double Taxation and Prevention of Fiscal Evasion with Respect to Taxes on Income,” if such holding company is considered a non-PRC PRC Value Added Tax On May 1, 2016, the transition from the imposition of PRC business tax to the imposition of VAT was expanded to all industries in China, and all of the Sohu Group’s revenues have been subject to VAT since that date. To record VAT payable, the Group adopted the net presentation method, which presents the difference between the output VAT (at rates of 6% or 17% for the years ended December 31, 2016 and 2017 and for the period from January 1, 2018 to April 30, 2018, and at rates of 6% or 16% after May 1, 2018) and the available input VAT amount (at the rate applicable to the supplier). U.S. Corporate Income Tax Sohu.com Inc., which was formerly the top-tier one-time Certain activities conducted in the PRC resulted in U.S. corporate income taxes being imposed on Sohu.com Inc. when its subsidiaries that were controlled foreign corporations (“CFCs”) generated income that was subject to Subpart F of the U.S. Internal Revenue Code (“Subpart F”). Generally, passive income, such as rents, royalties, interest, dividends, and gains from disposal of the company’s investments, is among the types of income subject to taxation under Subpart F. Any income taxable under Subpart F was taxable in the U.S. at a federal corporate income tax rate of 21%. Subpart F income also included certain income from intra-Group transactions between Sohu.com Inc.’s non-U.S. non-U.S. non-U.S. non-U.S. To the extent that portions of Sohu.com Inc.’s U.S. taxable income, such as Subpart F income or global intangible low-taxed Treatment of Toll Charge Related to the U.S. TCJA Beginning in the fourth quarter of 2017, the Sohu Group had recognized a provisional amount of income tax expense for the Toll Charge of $219 million, which represented management’s estimate of the amount of the Toll Charge that would have been payable by Sohu.com Inc. based on the deemed repatriation to the United States of its share of previously deferred earnings of certain of its non-U.S. For the fourth quarter of 2018, the Sohu Group’s management re-evaluated The tax benefit recognized and the unrecognized tax benefit in relation to the Toll Charge may be subject to further adjustment in subsequent periods based on facts and circumstances that arose after December 31, 2018, such as final IRS Toll Charge regulations published in February 2019, and any future circumstances such as any guidance issued by the U.S. Department of the Treasury, any U.S. IRS challenge of the Group’s position on the Toll Charge, and management’s further judgment and estimates. Uncertain Tax Positions The Sohu Group is subject to various taxes in different jurisdictions, primarily the U.S. and the PRC. Management reviews regularly the adequacy of the provisions for taxes as they relate to the Group’s income and transactions. In order to assess uncertain tax positions, the Group applies a more likely than not threshold and a two-step two-step
Net Income /(Loss) per Share	Net Income /(Loss) per Share Basic net income /(loss) per share is computed using the weighted average number of ordinary shares outstanding during the period. Diluted net income /(loss) per share is computed using the weighted average number of ordinary shares and, if dilutive, potential ordinary shares outstanding during the period. Potential ordinary shares comprise shares issuable upon the exercise or settlement of share-based awards using the treasury stock method. The dilutive effect of share-based awards with performance requirements is not considered before the performance targets are actually met. The computation of diluted net income /(loss) per share does not assume conversion, exercise, or contingent issuance of securities that would have an anti-dilutive effect (i.e. an increase in earnings per share amounts or a decrease in loss per share amounts) on net income /(loss) per share. Additionally, for purposes of calculating the numerator of diluted net income /(loss) per share, the net income /(loss) attributable to the Sohu Group is calculated as follows: Sogou’s net income /(loss) attributable to Sohu Before Sogou’s IPO Before Sogou’s IPO, Sogou’s net income /(loss) attributable to Sohu was determined using the percentage that the weighted average number of Sogou shares held by Sohu represented of the weighted average number of the Sogou Pre-IPO Pre-IPO if-converted After Sogou’s IPO After Sogou’s IPO, Sogou’s net income /(loss) attributable to Sohu is determined using the percentage that the weighted average number of Sogou shares held by Sohu represents of the weighted average number of Sogou ordinary shares and shares issuable upon the exercise or settlement of share-based awards under the treasury stock method, and not by using the percentage held by Sohu of the total economic interest in Sogou, which is used for the calculation of basic net income per share. In the calculation of Sohu’s diluted net income /(loss) per share, assuming a dilutive effect, the percentage of Sohu’s shareholding in Sogou was calculated by treating convertible preferred shares issued by Sogou as having been converted at the beginning of the period and unvested Sogou share options with the performance targets achieved as well as vested but unexercised Sogou share options as having been exercised during the period. The dilutive effect of share-based awards with a performance requirement was not considered before the performance targets were actually met. Assuming an anti-dilutive effect, all of these Sogou shares and share options are excluded from the calculation of Sohu’s diluted income /(loss) per share. As a result, Sogou’s net income /(loss) attributable to Sohu on a diluted basis equals the number used for the calculation of Sohu’s basic net income /(loss) per share. Changyou’s net income /(loss) attributable to Sohu Changyou’s net income /(loss) attributable to Sohu is determined using the percentage that the weighted average number of Changyou shares held by Sohu represents of the weighted average number of Changyou ordinary shares and shares issuable upon the exercise or settlement of share-based awards under the treasury stock method, and not by using the percentage held by Sohu of the total economic interest in Changyou, which is used for the calculation of basic net income per share. In the calculation of Sohu’s diluted net income /(loss) per share, assuming a dilutive effect, all of Changyou’s existing unvested restricted share units and share options, and vested restricted share units and share options that have not yet been settled, are treated as vested and settled by Changyou under the treasury stock method, causing the percentage of the weighted average number of shares held by Sohu in Changyou to decrease. As a result, Changyou’s net income /(loss) attributable to Sohu on a diluted basis decreased accordingly. Assuming an anti-dilutive effect, all of these Changyou restricted share units and share options are excluded from the calculation of Sohu’s diluted net income /(loss) per share. As a result, Changyou’s net income /(loss) attributable to Sohu on a diluted basis equals the number used for the calculation of Sohu’s basic net income /(loss) per share.
Fair Value of Financial Instruments	Fair Value of Financial Instruments U.S. GAAP establishes a three-tier hierarchy to prioritize the inputs used in the valuation methodologies in measuring the fair value of financial instruments. This hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three-tier fair value hierarchy is: Level 1 - observable inputs that reflect quoted prices (unadjusted) for identical assets or liabilities in active markets. Level 2 - include other inputs that are directly or indirectly observable in the market place. Level 3 - unobservable inputs which are supported by little or no market activity. The Sohu Group’s financial instruments consist primarily of cash equivalents, short-term investments, accounts receivable, financing receivables, prepaid and other current assets, long-term investments, restricted time deposits, accounts payable, accrued liabilities, receipts in advance and deferred revenue, short-term bank loans, other short-term liabilities, long-term bank loans and long-term accounts payable.
Cash Equivalents	Cash Equivalents The Sohu Group’s cash equivalents mainly consist of time deposits with original maturities of three months or less, and highly liquid investments that are readily convertible to known amounts of cash.
Short-term Investments	Short-term Investments For investments in financial instruments with a variable interest rate indexed to the performance of underlying assets, the Sohu Group elected the fair value method at the date of initial recognition and carried these investments subsequently at fair value. Changes in fair values are reflected in the consolidated statements of comprehensive income.
Accounts Receivable, Net	Accounts Receivable, Net The carrying value of accounts receivable is reduced by an allowance that reflects the Sohu Group’s best estimate of the amounts that will not be collected. The Group makes estimations of the collectability of accounts receivable. Many factors are considered in estimating the general allowance, including reviewing delinquent accounts receivable, performing an aging analysis and a customer credit analysis, and analyzing historical bad debt records and current economic trends.
Financing Receivables, Net	Financing Receivables, Net Financing receivables consist primarily of small consumer loans to individual borrowers. Such amounts are recorded at the principal amount and interest accrued, net of allowance for credit losses that reflects Sogou’s best estimate of the amounts that will not be collected. Interest on loans is accrued based on the contractual interest rates of the loans when earned. The loan periods granted by Sogou to the borrowers related to the small consumer loans are generally within one year. The allowance for credit losses is determined at a level believed to be reasonable to absorb probable losses inherent in the loan portfolio as of each balance sheet date. The allowance is provided based on an assessment performed on a portfolio basis and is estimated on a quarterly basis or more often as necessary based on the delinquency rate, the aging of the amount due and other relevant factors.
Foreign Exchange Forward Contracts	Foreign Exchange Forward Contracts Foreign exchange forward contracts are initially recognized on the date a foreign exchange forward contract is entered into and are subsequently measured at fair value.
Restricted Time Deposits	Restricted Time Deposits Restricted time deposits are valued based on the prevailing interest rates in the market using the discounted cash flow method.
Equity Investments	Equity Investments Investments in entities are recorded as equity investments under long-term investments. For entities over which the Group can exercise significant influence but does not own a majority equity interest or control, the equity method is applied, and the Group adjusts the carrying amount of an investment and recognizes investment income or loss for the Group’s share of the earnings or loss of the investee after the date of investment. For those equity investments accounted for other than under the equity method or those that result in consolidation, the fair value method is applied. However, for equity investments that do not have readily determinable fair values, the Group chooses to account for them at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. If this measurement alternative is elected, changes in the carrying value of the equity investments will be required to be made whenever there are observable price changes in transactions for identical or similar investments of the same issuer. The implementation guidance notes that an entity should make a “reasonable effort” to identify price changes that are known or that can reasonably be known.
Long-Lived Assets	Long-Lived Assets Long-lived assets include fixed assets and intangible assets. Fixed Assets Fixed assets mainly comprise office buildings, leasehold improvements, building improvements, vehicles, office furniture and computer equipment, and hardware. Fixed assets are recorded at cost less accumulated depreciation with no residual value. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. Fixed Assets Estimated Useful Lives (years) Office buildings 36-47 Leasehold improvements Lesser of term of the lease or the estimated useful lives of the assets Vehicles 4-10 Office furniture 5 Computer equipment and hardware 2-5 Expenditure for maintenance and repairs is expensed as incurred. The gain or loss on the disposal of fixed assets is the difference between the net sale proceeds and the carrying amounts of the relevant assets and is recognized in operating expenses in the consolidated statements of comprehensive income. Intangible Assets Intangible assets mainly comprise purchased video content, operating rights for licensed games, domain names and trademarks, computer software, and developed technologies. Intangible assets are recorded at cost less accumulated amortization with no residual value. Amortization of intangible assets other than purchased video content is computed using the straight-line method over their estimated useful lives. Amortization of purchased video content is computed based on the trend in viewership accumulation over the shorter of the applicable license period or two years. The estimated useful lives of the Group’s intangible assets are listed below: Intangible Assets Estimated Useful Lives (years) Purchased video content 1 month to 2 years Computer software 1-5 Developed technologies 3-10 Domain names and trademarks 4-30 Operating rights for licensed games over the contract terms Sohu Video enters into nonmonetary transactions to exchange online broadcasting rights for purchased video content with other online video broadcasting companies. Under ASC 845 Impairment of Long-lived Assets other than Purchased Video Content In accordance with ASC 360-10-35, Impairment of Purchased Video Content Purchased video content is stated at the lower of cost less accumulated amortization, or net realizable value (“NRV”). In accordance with ASC 920-350-35
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of the identifiable assets and liabilities acquired as a result of the Sohu Group’s acquisitions of interests in its subsidiaries and consolidated VIEs. If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Group reports in its financial statements provisional amounts for the items for which the accounting is incomplete. If a measurement period adjustment is identified, the Group recognizes the adjustment as part of the acquisition accounting. The Sohu Group increases or decreases the provisional amounts of identifiable assets or liabilities by means of increases or decreases in goodwill for measurement period adjustments. In accordance with ASC 350 ASC 350-20-35 two-step Application of a goodwill impairment test requires significant management judgment, including the identification of reporting units, assigning assets and liabilities to reporting units, assigning goodwill to reporting units, and determining the fair value of each reporting unit. The Group estimates fair value using the income approach and the market approach. The judgment in estimating the fair value of reporting units includes estimating future cash flows, determining appropriate discount rates, control premium, comparable companies’ multipliers, and making other assumptions. Changes in these estimates and assumptions could materially affect the determination of fair value for each reporting unit.
Comprehensive Income	Comprehensive Income Comprehensive income is defined as the change in equity of a company during a period from transactions and other events and circumstances excluding transactions resulting from investments from owners and distributions to owners. Accumulated other comprehensive income, as presented on the Sohu Group’s consolidated balance sheets, includes a cumulative foreign currency translation adjustment, and change in unrealized gains /(losses) on equity securities classified as available-for-sale 2016-01.
Functional Currency and Foreign Currency Translation	Functional Currency and Foreign Currency Translation An entity’s functional currency is the currency of the primary economic environment in which it operates, normally that is the currency of the environment in which the entity primarily generates and expends cash. Management’s judgment is essential to determine the functional currency by assessing various indicators, such as cash flows, sales price and market, expenses, financing and intra-Group transactions and arrangements. The functional currency of Sohu.com Limited, and its predecessor Sohu.com Inc., is the U.S. dollar. The functional currency of the Sohu Group’s subsidiaries in the U.S., the Cayman Islands, the British Virgin Islands and Hong Kong is the U.S. dollar. The functional currencies of the Sohu Group’s subsidiaries and VIEs in other countries are the national currencies of those counties, rather than the U.S. dollar. Foreign currency transactions denominated in currencies other than the functional currency are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Monetary assets and liabilities denominated in foreign currencies at the balance sheet date are re-measured re-measurement Financial statements of entities with a functional currency other than the U.S. dollar are translated into U.S. dollars, which is the reporting currency. Assets and liabilities are translated at the current exchange rate in effect at the balance sheet date, and revenues and expenses are translated at the average of the exchange rates in effect during the reporting period. Shareholders’ equity accounts are translated using the historical exchange rates at the date the entry to shareholders’ equity was recorded, except for the change in retained earnings during the year, which is translated using the historical exchange rates used to translate each period’s income statement. Differences resulting from translating a foreign currency to the reporting currency are recorded in accumulated other comprehensive income in the consolidated balance sheets.
Impact of Recently Issued Accounting Pronouncements	Impact of Recently Issued Accounting Pronouncements Revenue from Contracts with Customers No. 2014-09, Revenue from Contracts with Customers (Topic 606). Revenue Recognition. Financial Instruments (Subtopic 825-10). No. 2016-01, Financial Instruments- Recognition and Measurement of Financial Assets and Financial Liabilities Statements of Cash Flows (Topic 230): Restricted Cash. No. 2016-18, Statements of Cash Flows (Topic 230): Restricted Cash. beginning-of-period end-of-period beginning-of-period end-of-period Other accounting standards adopted beginning January 1, 2018 do not have a significant impact on the Sohu Group’s consolidated financial statements.
Impact of Recently Issued Accounting Pronouncements not Yet Adopted	Impact of Recently Issued Accounting Pronouncements not Yet Adopted Leases. No. 2016-02, Leases No. 2016-02 right-of-use 2016-02 right-of-use 2016-02’s 2016-02, Financial Instruments-Credit Losses. 2016-13, Financial Instruments-Credit Losses (Topic 326) 2016-13 Simplifying the Test for Goodwill Impairment. No. 2017-04, “Simplifying the Test for Goodwill Impairment.” 2017-04

The Company and Nature of Ope_2

The Company and Nature of Operations (Information of Subsidiaries and VIEs) (Tables)	12 Months Ended
	Dec. 31, 2018
THE COMPANY AND NATURE OF OPERATIONS [Abstract]
Information of all subsidiaries and VIEs	Name of Entity Date of Place of Effective Subsidiaries: For Sohu’s Business: Sohu.com (Hong Kong) Limited (“Sohu Hong Kong”) Incorporated on April 19, 2000 Hong Kong 100 % Beijing Sohu New Era Information Technology Co., Ltd. (“Sohu Era”) Incorporated on July 25, 2003 People’s Republic of China 100 % All Honest International Limited (“All Honest”) Incorporated on October 8, 2003 British Virgin Islands 100 % Sohu.com (Search) Limited (“Sohu Search”) Incorporated on October 28, 2005 Cayman Islands 100 % Beijing Sohu New Media Information Technology Co., Ltd. (“Sohu Media”) Incorporated on June 19, 2006 People’s Republic of China 100 % Sohu.com (Game) Limited (“Sohu Game”) Incorporated on February 11, 2008 Cayman Islands 100 % Beijing Sohu New Momentum Information Technology Co., Ltd. (“Sohu New Momentum”) Incorporated on May 31, 2010 People’s Republic of China 100 % Fox Video Investment Holding Limited (“Video Investment”) Incorporated on July 25, 2011 Cayman Islands 100 % Fox Video Limited (“Sohu Video”) Incorporated on July 26, 2011 Cayman Islands 100 % Fox Video (HK) Limited (“Video HK”) Incorporated on September 30, 2011 Hong Kong 100 % Fox Information Technology (Tianjin) Limited (“Video Tianjin”) Incorporated on November 17, 2011 People’s Republic of China 100 % Focus Investment Holding Limited (“Focus Investment”) Incorporated on July 10, 2013 Cayman Islands 100 % Sohu Focus Limited (“Sohu Focus”) Incorporated on July 11, 2013 Cayman Islands 100 % Sohu Focus (HK) Limited (“Focus HK”) Incorporated on July 26, 2013 Hong Kong 100 % For Sogou’s Business: Sogou Inc. (“Sogou”) Incorporated on December 23, 2005 Cayman Islands 33 % Sogou (BVI) Limited (“Sogou BVI”) Incorporated on December 23, 2005 British Virgin Islands 33 % Beijing Sogou Technology Development Co., Ltd. (“Sogou Technology”) Incorporated on February 8, 2006 People’s Republic of China 33 % Sogou Hong Kong Limited (“Sogou HK”) Incorporated on December 12, 2007 Hong Kong 33 % Vast Creation Advertising Media Services Limited (“Vast Creation”) Acquired on November 30, 2011 Hong Kong 33 % Beijing Sogou Network Technology Co., Ltd (“Sogou Network”) Incorporated on March 29, 2012 People’s Republic of China 33 % Sogou Technology Hong Kong Limited (“Sogou Technology HK”) Incorporated on August 25, 2015 Hong Kong 33 % Tianjin Sogou Network Technology Co., Ltd (“Tianjin Sogou Network”) Incorporated on May 18, 2017 People’s Republic of China 33 % Sogou (Shantou) Internet Microcredit Co., Ltd. (“Sogou Microcredit”) Incorporated on November 22, 2017 People’s Republic of China 33 % For Changyou’s Business: Changyou.com Limited (“Changyou”) Incorporated on August 6, 2007 Cayman Islands 67 % Changyou.com (HK) Limited (“Changyou HK”) Incorporated on August 13, 2007 Hong Kong 67 % Beijing AmazGame Age Internet Technology Co., Ltd. (“AmazGame”) Incorporated on September 26, 2007 People’s Republic of China 67 % Beijing Changyou Gamespace Software Technology Co., Ltd. (“Gamespace”) Incorporated on October 29, 2009 People’s Republic of China 67 % Beijing Yang Fan Jing He Information Consulting Co., Ltd. (“Yang Fan Jing He”) Incorporated on April 22, 2010 People’s Republic of China 67 % Beijing Changyou Jingmao Film & Culture Communication Co., Ltd. (“Beijing Jingmao”) Acquired on January 25, 2011 People’s Republic of China 67 % Shanghai Jingmao Culture Communication Co., Ltd. (“Shanghai Jingmao”) Acquired on January 25, 2011 People’s Republic of China 67 % 7Road.com Limited (“7Road”) Incorporated on June 15, 2011 Cayman Islands 67 % 7Road.com HK limited (“7Road HK”) Incorporated on July 6, 2011 Hong Kong 67 % Changyou.com Webgames (HK) Limited (“Changyou HK Webgames”) Incorporated on September 21, 2011 Hong Kong 67 % Shenzhen Brilliant Imagination Technologies Co., Ltd. (“Brilliant Imagination”) Incorporated on April 18, 2014 People’s Republic of China 67 % Beijing Changyou Chuangxiang Software Technology Co., Ltd. (“Changyou Chuangxiang”) Incorporated on November 8, 2016 People’s Republic of China 67 % VIEs: For Sohu’s Business: Beijing Century High-Tech Investment Co., Ltd. (“High Century”) Incorporated on December 28, 2001 People’s Republic of China 100 % Beijing Heng Da Yi Tong Information Technology Co., Ltd. (“Heng Da Yi Tong”) Incorporated on February 7, 2002 People’s Republic of China 100 % Beijing Sohu Internet Information Service Co., Ltd. (“Sohu Internet”) Incorporated on July 31, 2003 People’s Republic of China 100 % Beijing Sohu Donglin Advertising Co., Ltd. (“Donglin”) Incorporated on May 17, 2010 People’s Republic of China 100 % Tianjin Jinhu Culture Development Co., Ltd (“Tianjin Jinhu”) Incorporated on November 24, 2011 People’s Republic of China 100 % Beijing Focus Interactive Information Service Co., Ltd. (“Focus Interactive”) Incorporated on July 15, 2014 People’s Republic of China 100 % Guangzhou Qianjun Network Technology Co., Ltd (“Guangzhou Qianjun”) Acquired on November 25, 2014 People’s Republic of China 100 % For Sogou’s Business: Beijing Sogou Information Service Co., Ltd. Incorporated on December 28, 2005 People’s Republic of China 33 % Chengdu Easypay Technology Co., Ltd. (“Chengdu Easypay”) Incorporated on January 19, 2015 People’s Republic of China 33 % For Changyou’s Business: Beijing Gamease Age Digital Technology Co., Ltd. (“Gamease”) Incorporated on August 23, 2007 People’s Republic of China 67 % Shanghai ICE Information Technology Co., Ltd. (“Shanghai ICE”) Acquired on May 28, 2010 People’s Republic of China 67 % Beijing Guanyou Gamespace Digital Technology Co., Ltd. (“Guanyou Gamespace”) Incorporated on August 5, 2010 People’s Republic of China 67 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful lives of fixed assets	Fixed Assets Estimated Useful Lives (years) Office buildings 36-47 Leasehold improvements Lesser of term of the lease or the estimated useful lives of the assets Vehicles 4-10 Office furniture 5 Computer equipment and hardware 2-5
Estimated useful lives of intangible assets	Intangible Assets Estimated Useful Lives (years) Purchased video content 1 month to 2 years Computer software 1-5 Developed technologies 3-10 Domain names and trademarks 4-30 Operating rights for licensed games over the contract terms
ASC 606 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Line items in condensed consolidated statement of comprehensive income under adoption of ASC 606	As reported Without adoption of Effect of change Higher/(Lower) Revenue-Online advertising-Brand advertising $ 231,945 228,165 3,780 Revenue-Online advertising-Search and search related advertising 1,022,456 1,000,639 21,817 Cost of revenue- Online advertising-Search and search related advertising 664,164 642,920 21,244 Gross profit 811,308 811,308 0 Operating expenses- Sales and marketing 400,579 396,226 4,353 Operating loss (160,525 ) (160,525 ) 0 Income tax expense 13,432 13,432 0 Net loss (67,359 ) (67,359 ) 0 Basic net loss per share attributable to Sohu.com Limited (4.11 ) (4.11 ) 0 Diluted net loss per share attributable to Sohu.com Limited (4.13 ) (4.13 ) 0
Revenues disaggregated by products and services	Year Ended December 31, 2018 (in thousands) Year Ended December 31, 2017 (in thousands) Sohu Sogou Changyou Total Sohu Sogou Changyou Total Brand advertising: Sohu Media Portal $ 127,348 0 0 127,348 $ 151,982 0 0 151,982 Sohu Video 53,756 0 0 53,756 79,743 0 0 79,743 Focus 31,144 0 0 31,144 57,245 0 0 57,245 17173.com Website 0 0 19,697 19,697 0 0 25,096 25096 Search and search related advertising 0 1,022,456 0 1,022,456 0 801,199 0 801,199 Online games: PC games 0 0 236,743 236,743 0 0 239,149 239,149 Mobile games 0 0 151,737 151,737 0 0 208,355 208,355 Other games 0 0 1,310 1,310 0 0 2,029 2,029 Others: Cinema advertising business 0 0 70,202 70,202 0 0 91,419 91,419 Others 61,973 100,589 6,074 168,636 83,759 106,807 14,180 204,745 Total $ 274,221 1,123,045 485,763 1,883,029 $ 372,728 908,006 580,228 1,860,962

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
SEGMENT INFORMATION [Abstract]
Segment operating information by segment	Year Ended December 31, 2016 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 468,515 $ 660,408 $ 525,385 $ (3,877 ) $ 1,650,431 Segment cost of revenues (391,417 ) (302,565 ) (165,779 ) 327 (859,434 ) Segment gross profit 77,098 357,843 359,606 (3,550 ) 790,997 SBC (2) in cost of revenues (164 ) (171 ) (31 ) 0 (366 ) Gross profit 76,934 357,672 359,575 (3,550 ) 790,631 Operating expenses: Product development (3) (96,815 ) (132,749 ) (118,738 ) 4,342 (343,960 ) Sales and marketing (1) (3) (259,800 ) (121,303 ) (55,971 ) 4,688 (432,386 ) General and administrative (3) (47,804 ) (19,308 ) (45,642 ) 89 (112,665 ) SBC (2) in operating expenses (1,703 ) (8,680 ) (8,371 ) 0 (18,754 ) Total operating expenses (406,122 ) (282,040 ) (228,722 ) 9,119 (907,765 ) Operating profit /(loss) (329,188 ) 75,632 130,853 5,569 (117,134 ) Other income /(expense) (3) 5,360 (26,027 ) 15,523 (5,569 ) (10,713 ) Interest income (4) 8,879 5,198 21,490 (13,068 ) 22,499 Interest expense (4) (10,103 ) 0 (4,321 ) 13,068 (1,356 ) Exchange difference 2,349 5,346 5,108 0 12,803 Income /(loss) before income tax benefit /(expense) (322,703 ) 60,149 168,653 0 (93,901 ) Income tax benefit /(expense) 538 (27 ) (21,583 ) 0 (21,072 ) Net income /(loss) $ (322,165 ) $ 60,122 $ 147,070 $ 0 $ (114,973 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income/ (expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment. Year Ended December 31, 2017 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 374,696 $ 908,357 $ 580,261 $ (2,352 ) $ 1,860,962 Segment cost of revenues (414,526 ) (456,861 ) (163,713 ) 132 (1,034,968 ) Segment gross profit (39,830 ) 451,496 416,548 (2,220 ) 825,994 SBC (2) in cost of revenues 415 (540 ) (73 ) 0 (198 ) Gross profit (39,415 ) 450,956 416,475 (2,220 ) 825,796 Operating expenses: Product development (3) (113,590 ) (156,359 ) (124,869 ) 6,192 (388,626 ) Sales and marketing (1) (3) (199,304 ) (152,121 ) (59,705 ) 4,000 (407,130 ) General and administrative (3) (44,563 ) (25,407 ) (37,218 ) 130 (107,058 ) Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions 0 0 (86,882 ) 0 (86,882 ) SBC (2) in operating expenses (765 ) (27,193 ) (17,320 ) 0 (45,278 ) Total operating expenses (358,222 ) (361,080 ) (325,994 ) 10,322 (1,034,974 ) Operating profit /(loss) (397,637 ) 89,876 90,481 8,102 (209,178 ) Other income /(expense) (3) 4,694 692 9,374 (8,102 ) 6,658 Interest income (4) 7,344 9,126 32,319 (24,651 ) 24,138 Interest expense (4) (24,367 ) 0 (4,372 ) 24,651 (4,088 ) Exchange difference (2,107 ) (7,082 ) (5,196 ) 0 (14,385 ) Income /(loss) before income tax expense (412,073 ) 92,612 122,606 0 (196,855 ) Income tax expense (217,959 ) (14,422 ) (40,767 ) 0 (273,148 ) Net income /(loss) $ (630,032 ) $ 78,190 $ 81,839 $ 0 $ (470,003 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou, and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income/ (expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment. Year Ended December 31, 2018 Sohu Sogou Changyou Eliminations Consolidated Revenues (1) $ 274,670 $ 1,124,158 $ 485,763 $ (1,562 ) $ 1,883,029 Segment cost of revenues (218,184 ) (692,801 ) (160,859 ) 54 (1,071,790 ) Segment gross profit 56,486 431,357 324,904 (1,508 ) 811,239 SBC (2) in cost of revenues 707 (669 ) 31 0 69 Gross profit 57,193 430,688 324,935 (1,508 ) 811,308 Operating expenses: Product development (3) (123,743 ) (191,426 ) (126,593 ) 6,733 (435,029 ) Sales and marketing (1) (3) (203,307 ) (144,867 ) (54,800 ) 2,800 (400,174 ) General and administrative (3) (48,664 ) (36,177 ) (33,622 ) 367 (118,096 ) Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions 0 0 (16,369 ) 0 (16,369 ) SBC (2) in operating expenses 4,940 (13,535 ) 6,430 0 (2,165 ) Total operating expenses (370,774 ) (386,005 ) (224,954 ) 9,900 (971,833 ) Operating profit /(loss) (313,581 ) 44,683 99,981 8,392 (160,525 ) Other income /(expense) (3) 345,416 41,489 22,879 (345,617 ) 64,167 Interest income (4) 14,001 8,037 34,409 (32,368 ) 24,079 Interest expense (4) (39,709 ) 0 (10,197 ) 32,368 (17,538 ) Exchange difference 1,981 5,725 1,320 0 9,026 Income /(loss) before income tax expense 8,108 99,934 148,392 (337,225 ) (80,791 ) Income tax benefit /(expense) 79,052 (1,153 ) (64,467 ) 0 13,432 Net income /(loss) $ 87,160 $ 98,781 $ 83,925 $ (337,225 ) $ (67,359 ) Note (1): The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou, and Changyou segments. Note (2): “SBC” stands for share-based compensation expense. Note (3): The elimination mainly consists of the distribution by Changyou of a dividend to Sohu in 2018 and leasing income and expenses generated from a building that Sohu leases to Sogou. Note (4): The elimination represents interest income /(expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment.
Segment assets information by segment	As of December 31, 2017 Sohu Sogou Changyou Eliminations Consolidated Cash and cash equivalents $ 98,750 $ 694,207 $ 571,139 $ 0 $ 1,364,096 Accounts receivable, net 86,801 72,117 91,636 (86 ) 250,468 Fixed assets, net 200,561 139,209 189,947 0 529,717 Total assets (1) $ 1,124,759 $ 1,321,036 $ 1,922,023 $ (978,579 ) $ 3,389,239 Note (1): The elimination for segment assets mainly consists of elimination of intra-Group loans between Sohu and Changyou, and elimination of long-term investments in subsidiaries and consolidated VIEs. As of December 31, 2018 Sohu Sogou Changyou Eliminations Consolidated Cash and cash equivalents $ 180,004 $ 185,175 $ 454,534 $ 0 $ 819,713 Account and financing receivables, net 78,383 145,401 57,389 0 281,173 Fixed assets, net 186,758 147,495 170,745 0 504,998 Total assets (1) $ 1,319,490 $ 1,462,844 $ 1,965,484 $ (1,449,309 ) $ 3,298,509 Note (1): The elimination for segment assets mainly consists of elimination of intra-Group loans between Sohu and Changyou, and elimination of long-term investments in subsidiaries and consolidated VIEs.

Share-based Compensation Expe_2

Share-based Compensation Expense (Tables)	12 Months Ended
	Dec. 31, 2018
SHARE-BASED COMPENSATION EXPENSE [Abstract]
Share-based compensation expense recognized in costs and expenses	Year Ended December 31, Share-based compensation expense 2016 2017 2018 Cost of revenues $ 366 $ 198 $ (69 ) Product development expenses 9,184 23,547 6,131 Sales and marketing expenses 2,394 5,915 405 General and administrative expenses 7,176 15,817 (4,372 ) $ 19,120 $ 45,477 $ 2,095
Share-based compensation expense recognized for share awards of Sohu (excluding Sohu Video), Sogou, Changyou and Sohu Video	Year Ended December 31, Share-based compensation expense 2016 2017 2018 For Sohu (excluding Sohu Video) share-based awards $ 2,761 $ 652 $ (5,100 ) For Sogou share-based awards (1) 8,802 27,729 14,204 For Changyou share-based awards 8,402 17,394 (6,461 ) For Sohu Video share-based awards (845 ) (298 ) (548 ) $ 19,120 $ 45,477 $ 2,095 Note (1): Compensation expense for Sogou share-based awards also includes compensation expense for Tencent restricted share units that Tencent had granted to employees who transferred to Sogou with the Soso search and search-related businesses.

Other Income _(Expense),net (Ta

Other Income /(Expense),net (Tables)	12 Months Ended
	Dec. 31, 2018
OTHER INCOME /(EXPENSE), NET [Abstract]
Other income /(expense)	Year Ended December 31, 2016 2017 2018 Gain from the changes in fair value of financial instruments (1) 13,133 6,665 40,054 Investment income /(expense) (2) (1,908 ) (2,051 ) 14,565 Government grant 2,112 2,166 5,460 Donations (3) (27,982 ) (218 ) (70 ) Write-off of unpaid long-term accounts payable 0 2,031 0 Impairment loss on available-for-sale 0 (5,754 ) 0 Others 3,932 3,819 4,158 $ (10,713 ) $ 6,658 $ 64,167 Note (1): The increase for 2018 compared to 2017 mainly consisted of $33.4 million in income earned from investments in financial instruments. Note (2): The increase for 2018 compared to 2017 mainly consisted of $17.8 million in investment income recognized in the third quarter of 2018 by Sogou due to the observable change in the price of Zhihu Technology Limited (“Zhihu”) after the adoption of ASU 2016-01, Note (3): In the second quarter of 2016, the Sohu Group recognized a one-time Note (4): Before the adoption of ASU 2016-01, available-for-sale

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2018
BALANCE SHEET COMPONENTS [Abstract]
Balance sheet components account and financing receivables, net	As of December 31, 2017 2018 Account and financing receivables, net Accounts receivable $ 256,131 251,853 Financing receivables 0 46,238 Allowance for doubtful accounts and credit losses (5,663 ) (16,918 ) $ 250,468 281,173
Balance sheet components movement of allowance for doubtful accounts	Balance at the Additional provision Write-offs Exchange Balance at the 2016 3,976 7,109 (5,992 ) (252 ) 4,841 2017 4,841 9,076 (8,634 ) 380 5,663 2018 5,663 15,659 (3,848 ) (556 ) 16,918
Balance sheet components other assests and liabilities	As of December 31, 2017 2018 Prepaid and other current assets Matching loan due from a related party (See Note 8) $ 32,005 $ 31,607 Prepaid content and license 35,442 30,033 Prepaid taxes 35,551 30,524 Receivables from third party payment service providers 367 14,012 Prepaid cost of revenue 14,782 13,794 Inventory 4,730 12,726 Prepaid rental deposit 9,314 9,287 Receivables from third party payment platforms 3,350 8,844 Interest receivable from short term investments 2,515 3,645 Prepaid office rent and facilities expenses 3,265 3,025 Employee advances 4,109 2,275 Prepaid advertising and promotion fees 3,371 230 Loans to third parties 28,544 0 Due from 7Road 5,344 0 Others 9,986 8,303 $ 192,675 $ 168,305 Prepaid non-current Prepaid PRC income tax for the sale of assets associated with 17173.com by Sohu to Changyou $ 4,020 $ 2,870 Others 191 237 $ 4,211 $ 3,107 Other short-term liabilities Contract deposits from advertisers $ 29,078 $ 40,073 Matching loans due to a related party (See Note 8) 31,192 32,719 Deposits related to Focus 29,889 21,648 Donation payable 7,652 0 Consideration payable for equity investment 6,427 5,960 Depository payable reimbursement 0 4,985 Early exercise of Sogou share options for trust arrangements 4,503 2,702 Accrued liabilities to suppliers 6,725 3,288 Government grant 765 0 Foreign exchange forward contracts 715 0 Others 19,354 12,710 $ 136,300 $ 124,085 Receipts in advance and deferred revenue Receipts in advance relating to: brand advertising business $ 12,858 $ 10,069 search and search-related business 66,223 65,465 online game business 18,498 19,014 others business 5,327 3,602 Total receipts in advance 102,906 98,150 Deferred revenue 24,852 26,632 $ 127,758 $ 124,782

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Financial instruments, measured at fair value	Fair value measurements at reporting date using Items As of Quoted Prices Significant Significant Cash equivalents $ 1,136,892 $ 0 $ 1,136,892 $ 0 Short-term investments 818,934 0 818,934 0 Equity investments with readily determinable fair values 21,307 21,307 0 0 Foreign exchange forward contracts recognized in other short-term liabilities 715 0 715 0 Fair value measurements at reporting date using Items As of Quoted Prices Significant Significant Cash equivalents $ 595,702 $ 0 $ 595,702 $ 0 Short-term investments 1,041,395 0 1,041,395 0 Restricted time deposits 244,179 0 244,179 0 Equity investments with readily determinable fair values 6,790 6,790 0 0
Assets measured at fair value on nonrecurring basis	Fair value measurements at reporting date using Items As of Quoted Prices in Significant Other Significant Purchased video content recorded in prepaid and other assets $ 10,192 $ 0 $ 0 $ 10,192 Intangible assets, net 23,060 0 0 23,060 Goodwill 71,565 0 0 71,565 Fair value measurements at reporting date using Items As of Quoted Prices in Significant Other Significant Purchased video content recorded in prepaid and other assets $ 5,504 $ 0 $ 0 $ 5,504 Intangible assets, net 24,118 0 0 24,118 Goodwill 53,263 0 0 53,263
ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Line items in condensed consolidated statement of comprehensive income and balance sheet under adoption of ASU 2016-01	As reported Without adoption of 2016-01 Effect of change Higher/(Lower) Operating loss $ (160,525 ) (160,525 ) 0 Other income, net 64,167 49,828 14,339 Income tax benefit (13,432 ) (12,542 ) (890 ) Net loss (67,359 ) (82,588 ) 15,229 Foreign currency translation adjustments (37,339 ) (37,339 ) 0 Change in unrealized gain for equity securities with readily determinable fair values 0 (2,743 ) 2,743 Other comprehensive loss (37,339 ) (40,082 ) 2,743 Comprehensive loss (104,698 ) (122,670 ) 17,972 Basic net loss per share attributable to Sohu.com Limited (4.11 ) (4.19 ) 0.08 Diluted net loss per share attributable to Sohu.com Limited (4.13 ) (4.21 ) 0.08 As reported Without adoption of 2016-01 Effect of change Higher/(Lower) Long term investments, net $ 108,356 90,357 17,999 Deferred tax liabilities 85,264 85,237 27 Accumulated other comprehensive income 24,719 29,477 (4,758 ) Accumulated deficit (394,801 ) (399,546 ) 4,745

Fixed Assets (Tables)

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2018
FIXED ASSETS [Abstract]
Fixed assets	As of December 31, 2017 2018 Office buildings $ 391,490 $ 372,723 Computer equipment and hardware 388,693 418,624 Leasehold and building improvements 45,849 49,164 Office furniture 9,879 8,878 Vehicles 4,029 3,915 Fixed assets, gross 839,940 853,304 Accumulated depreciation (310,223 ) (348,306 ) Fixed assets, net $ 529,717 $ 504,998

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2018
GOODWILL [Abstract]
Carrying value of goodwill by segment	Sohu Sogou Changyou Total Balance as of December 31, 2016 Goodwill 72,011 5,565 96,949 174,525 Accumulated impairment losses (35,788 ) 0 (70,447 ) (106,235 ) $ 36,223 $ 5,565 $ 26,502 $ 68,290 Transactions in 2017 Goodwill associated with MoboTap reclassified from assets held for sale to assets held for use 0 0 83,470 83,470 Goodwill impairment recognized for MoboTap 0 0 (83,470 ) (83,470 ) Goodwill associated with an acquisition 1,000 0 0 1,000 Foreign currency translation adjustment 930 343 1,002 2,275 Balance as of December 31, 2017 $ 38,153 $ 5,908 $ 27,504 $ 71,565 Balance as of December 31, 2017 Goodwill 73,941 5,908 181,421 261,270 Accumulated impairment losses (35,788 ) 0 (153,917 ) (189,705 ) $ 38,153 $ 5,908 $ 27,504 $ 71,565 Transactions in 2018 Foreign currency translation adjustment (772 ) (283 ) (878 ) (1,933 ) Impairment losses 0 0 (16,369 ) (16,369 ) Balance as of December 31, 2018 $ 37,381 $ 5,625 $ 10,257 $ 53,263 Balance as of December 31, 2018 Goodwill 69,627 5,625 180,543 255,795 Accumulated impairment losses (32,246 ) 0 (170,286 ) (202,532 ) $ 37,381 5,625 $ 10,257 $ 53,263

Intangible Assets, Net (Tables)

Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2018
INTANGIBLE ASSETS, NET [Abstract]
Finite-lived intangible assets by major class	As of December 31, 2017 Items Gross Accumulated Impairment Net Purchased video content $ 152,135 $ (135,177 ) $ (11,275 ) $ 5,683 Operating rights for licensed games 34,296 (17,882 ) (10,924 ) 5,490 Domain names and trademarks 33,630 (11,144 ) (13,279 ) 9,207 Computer software 17,413 (15,401 ) 0 2,012 Developed technologies 19,300 (5,020 ) (14,089 ) 191 Others 25,051 (15,189 ) (9,385 ) 477 Total $ 281,825 $ (199,813 ) $ (58,952 ) $ 23,060 As of December 31, 2018 Items Gross Accumulated Impairment Net Purchased video content $ 177,307 $ (156,198 ) $ (18,556 ) $ 2,553 Operating rights for licensed games 46,328 (22,299 ) (11,806 ) 12,223 Domain names and trademarks 28,536 (11,124 ) (9,823 ) 7,589 Computer software 15,671 (14,022 ) 0 1,649 Developed technologies 8,902 (1,463 ) (7,439 ) 0 Others 7,204 (4,407 ) (2,693 ) 104 Total $ 283,948 $ (209,513 ) $ (50,317 ) $ 24,118
Expected amortization expense	For the year ending December 31, (in thousands) 2019 8,452 2020 6,526 2021 3,007 2022 1,101 2023 963 Thereafter 4,069 Total expected amortization expense $ 24,118

Taxation (Tables)

Taxation (Tables)	12 Months Ended
	Dec. 31, 2018
TAXATION [Abstract]
Components of income before income taxes	Year ended December 31, 2016 2017 2018 Income /(loss) before income tax expense Income /(loss) from China operations $ (88,440 ) $ (75,893 ) $ (33,091 ) Income /(loss) from non-China (5,461 ) (120,962 ) (47,700 ) Total income /(loss) before income tax expense $ (93,901 ) $ (196,855 ) $ (80,791 ) Income tax expense applicable to China operations Current tax $ 13,635 $ 57,413 $ 15,040 Deferred tax 8,500 380 49,598 Subtotal income tax expense applicable to China operations 22,135 57,793 64,638 Non China income tax expense/(benefit) (2,134 ) 214,737 (78,539 ) Non China withholding tax expense 1,071 618 469 Total income tax expense $ 21,072 $ 273,148 $ (13,432 )
Combined effects of the income tax exemption and reduction available	Year Ended December 31, 2016 2017 2018 Tax holiday effect $ 30,872 $ 17,736 $ 28,385 Basic net income per share effect 0.80 0.46 0.73
Reconciliation between the U.S. federal statutory rate and the Group's effective tax rate	Year Ended December 31, 2016 2017 2018 Statutory Rate: 35 % 35 % 25 % Effect of tax holidays applicable to subsidiaries and consolidated VIEs (1) 33 % 9 % 35 % Tax differential from statutory rate applicable to subsidiaries and consolidated VIEs (3 %) (11 %) 4 % Effect of withholding taxes (2) (4 %) (2 %) (65 %) Changes in valuation allowance for deferred tax assets (91 %) (57 %) (69 %) Others 8 % (2 %) (4 %) (22 %) (28 %) (74 %) Note (1): The reversal of income tax for preferential income tax rates that Changyou’s and Sogou’s subsidiaries and VIEs were entitled to as KNSEs or Software Enterprises for 2016, 2017 and 2018 was included in the “Effect of tax holidays applicable to subsidiaries and consolidated VIEs” in the above table. Note (2): The change was mainly due to additional income withholding tax of $47 million that was recognized in the first quarter of 2018 due to a revised policy for Changyou’s PRC subsidiaries with respect to their distribution of cash dividends. The revised policy was adopted to facilitate the distribution of a special cash dividend in the aggregate amount of approximately $500.0 million that was declared by Changyou’s Board of Directors on April 5, 2018.
Deferred tax assets and liabilities	As of December 31, 2017 2018 Deferred tax assets: Net operating loss from operations $ 245,534 $ 270,807 Accrued bonus and commissions 25,164 26,704 Intangible assets transfer 538 286 Others 10,307 14,784 Total deferred tax assets 281,543 312,581 Less: Valuation allowance (256,347 ) (285,225 ) Net deferred tax assets $ 25,196 $ 27,356 Deferred tax liabilities Withholding tax for Dividend $ (30,992 ) $ (79,824 ) Deferred U.S. tax (5,498 ) 0 Intangible assets from business acquisitions (1,247 ) (1,087 ) Others (5,655 ) (4,353 ) Total deferred tax liabilities $ (43,392 ) $ (85,264 )
Movement of the valuation allowance	For the Year Ended 2016 2017 2018 Beginning balance $ 153,559 216,174 256,347 Provision for the year 83,078 66,092 49,529 Reversal for the year (10,952 ) (39,004 ) (8,253 ) Foreign currency translation adjustment (9,511 ) 13,085 (12,398 ) Ending balance $ 216,174 256,347 285,225
Uncertain tax positions	As of December 31, 2016 2017 2018 Beginning balance $ 39,244 $ 32,682 $ 31,138 Decreases related to prior year tax positions (6,649 ) (1,544 ) (1,190 ) Increases related to current year tax positions 87 0 144,414 Ending balance $ 32,682 $ 31,138 $ 174,363

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2018
COMMITMENTS AND CONTINGENCIES [Abstract]
Contractual Obligations	2019 2020 2021 2022 2023 Thereafter Total Purchase of cinema advertisement slot rights $ 56,396 40,579 18,064 6,103 4,019 0 125,161 Purchase of bandwidth 82,814 1,143 311 0 0 0 84,268 Operating lease obligations (1) 14,713 13,897 6,971 809 271 0 36,661 Interest payment commitment 16,754 11,119 7,062 0 0 0 34,935 Purchase of content and services – video 23,746 2,159 2,066 0 0 0 27,971 Expenditures for operating rights for licensed games with technological feasibility 19,475 1,098 0 0 0 0 20,573 Expenditures for titles of games in development 6,990 725 0 0 0 0 7,715 Purchase of content and services – others 6,148 90 54 54 18 0 6,364 Fees for operating rights for licensed games in development 585 0 0 0 0 0 585 Others 5,640 0 0 0 0 0 5,640 Total Payments Required $ 233,261 70,810 34,528 6,966 4,308 0 349,873 Note (1): For the years ended December 31, 2018, 2017 and 2016, rental expense included in the operating lease was approximately $24.7 million, $23.9 million, and $23.9 million, respectively.

VIEs (Tables)

VIEs (Tables)	12 Months Ended
	Dec. 31, 2018
VIES [Abstract]
Financial information of consolidated VIEs	As of December 31, 2017 2018 ASSETS: Cash and cash equivalents $ 43,618 $ 65,864 Restricted cash 0 697 Account and financing receivables, net 95,305 122,884 Prepaid and other current assets 26,755 20,554 Short-term investments 12,303 7,305 Intra-Group receivables due from the Company’s subsidiaries 398,135 390,157 Total current assets 576,116 607,461 Long-term investments, net 32,266 45,871 Fixed assets, net 2,414 1,793 Intangible assets, net 11,719 18,240 Goodwill 37,291 36,353 Other non-current 2,614 1,925 Total assets $ 662,420 $ 711,643 LIABILITIES: Accounts payable $ 53,842 $ 84,749 Accrued liabilities 76,883 60,555 Receipts in advance and deferred revenue 46,939 43,020 Other current liabilities 97,991 86,851 Intra-Group payables due to the Company’s subsidiaries 197,367 273,672 Total current liabilities 473,022 548,847 Long-term tax liabilities 14,293 13,554 Deferred tax liabilities 3,451 2,239 Intra-Group payables due to the Company’s subsidiaries 20,560 18,897 Total liabilities $ 511,326 $ 583,537 As of December 31, 2016 2017 2018 Net revenue $ 894,697 $ 881,284 $ 923,131 Net income /(loss) $ 9,557 $ 34,910 $ (18,436 ) Year ended December 31, 2016 2017 2018 Net cash provided by /(used in) operating activities $ (17,804 ) $ (52,351 ) $ 69,925 Net cash used in investing activities (2,273 ) (14,020 ) (49,271 ) Net cash provided by /(used in) financing activities $ 0 $ (131 ) $ 650

Sohu.com Limited Shareholders_2

Sohu.com Limited Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sohu.com Limited's outstanding shares	Number of Outstanding Shares 2016 2017 2018 Balance, beginning of year 38,653 38,742 38,898 Issuance: 89 156 331 Balance, end of year 38,742 38,898 39,229
Sohu 2018 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share option activity	Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 223 $ 0.001 $ Granted 147 0.001 Exercised (328 ) 0.001 Forfeited or expired 0 Outstanding as of December 31, 2018 42 0.001 6.56 736 Vested as of December 31, 2018 42 0.001 6.56 736 Exercisable as of December 31, 2018 42 0.001 6.56 736 Note (1): The aggregated intrinsic value in the preceding table represents the difference between Sohu’s closing ADS price of $17.42 on December 31, 2018 and the nominal exercise price of the options.
Restricted share unit activity	Restricted Stock Units Number of Weighted-Average Unvested as of January 1, 2018 1 $ 72.92 Granted 0 Vested (1 ) 72.92 Forfeited 0 Unvested as of December 31, 2018 0 Expected to vest after December 31, 2018 0
Sogou 2010 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share option activity	Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 9,753 $ 0.462 5.56 $ Granted 1,704 0.001 Exercised (4,515 ) 0.399 Forfeited or expired (497 ) 0.001 Outstanding as of December 31, 2018 6,445 0.419 5.29 31,137 Vested as of December 31, 2018 and expected to vest thereafter 6,059 0.446 5.10 29,109 Exercisable as of December 31, 2018 798 0.001 7.15 4,188 Note (1): The aggregate intrinsic values in the preceding table represent the difference between Sogou’s closing price of $5.25 per Class A Ordinary Share on December 31, 2018 and the exercise prices of the share options.
Summary of categories of share options	Contractually Granted Vested and Exercised Performance-based options 29,687 27,199 27,060 26,592 Service-based options 1,674 1,674 486 156 IPO-based 7,250 7,250 2,930 2,930 Total 38,611 36,123 30,476 29,678
Stock option assumptions	Assumptions Adopted 2016 2017 2018 Average risk-free interest rate 1.90%~2.77% 2.14%~3.00% 3.36% ~ 3.51% Exercise multiple 2~3 2~3 2 Expected forfeiture rate (post-vesting) 0%~12% 0%~12% 12% Weighted average expected option life 7 7 9 Volatility rate 43%~50% 39%~47% 40% ~ 46% Dividend yield 0% 0% 0% Weighted average fair value of share options 3.26 10.35 12.26
Sogou 2017 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share option activity	Options Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 0 $ $ Granted 767 0.001 Exercised 0 Forfeited or expired (37 ) 0.001 Outstanding as of December 31, 2018 730 0.001 9.57 3,829 Vested as of December 31, 2018 and expected to vest thereafter 544 0.001 9.57 2,857 Exercisable as of December 31, 2018 0 Note (1): The aggregate intrinsic value in the preceding table represents the difference between the Sogou’s closing price of $5.25 per Class A Ordinary Shares on December 31, 2018 and the exercise prices of the share options.
Summary of categories of share options	Contractually Granted Vested and Exercised Performance-based options 70 0 0 0 Service-based options 730 730 0 0 Total 800 730 0 0
Stock option assumptions	Assumptions Adopted 2018 Average risk-free interest rate 3.41%~3.95% Exercise multiple 2 Expected forfeiture rate (post-vesting) 12% Weighted average expected option life 10 Volatility rate 40%~46% Dividend yield 0% Weighted average fair value of share options 10.09
Sohu Management Sogou Share Option Arrangement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share option activity	Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 9 $ 0.001 7.38 $ Granted 0 Exercised 0 Forfeited or expired 0 Outstanding as of December 31, 2018 9 0.001 6.38 47 Vested as of December 31, 2018 9 0.001 6.38 47 Exercisable as of December 31, 2018 9 0.001 6.38 47 Note (1): The aggregate intrinsic values in the preceding table represent the difference between Sogou’s closing price of $5.25 per Class A ordinary share on December 31, 2018 and the exercise prices of the options.
Summary of categories of share options	Contractually Granted Vested and Exercised Performance-based options 8,290 8,290 8,290 8,290 Service-based options 15 15 15 6 Total 8,305 8,305 8,305 8,296
Stock option assumptions	Assumptions Adopted 2016 Average risk-free interest rate 2.01%~2.15% Exercise multiple 2~3 Expected forfeiture rate (post-vesting) 0% Weighted average expected option life 6 Volatility rate 43%~47% Dividend yield 0% Weighted average fair value of share options 3.02
Changyou 2014 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share option activity	Number Weighted Weighted Aggregate Outstanding as of January 1, 2018 947 $ 0.01 7.01 $ 17,240 Granted 719 0.01 Exercised (1,065 ) 0.01 Forfeited or expired 0 Outstanding as of December 31, 2018 601 0.01 5.98 5,487 Vested as of December 31, 2018 601 0.01 5,487 Exercisable as of December 31, 2018 601 0.01 Note (1): The aggregate intrinsic value in the preceding table represents the difference between Changyou’s closing price of $18.28 per ADS, or $9.14 per Class A ordinary share, on December 31, 2018 and the nominal exercise price of the share option.
Video 2011 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option assumptions	Assumptions Adopted 2018 Average risk-free interest rate 3.19 % Exercise multiple 2.8 Expected forfeiture rate (post-vesting) 14 % Weighted average expected option life 3.0 Volatility rate 45.1 % Dividend yield 0 Fair value 0.53

Noncontrolling Interest (Tables

Noncontrolling Interest (Tables)	12 Months Ended
	Dec. 31, 2018
NONCONTROLLING INTEREST [Abstract]
Noncontrolling interest in consolidated balance sheets	As of December 31, 2017 2018 Sogou $ 623,785 $ 686,503 Changyou 442,818 277,608 Total $ 1,066,603 $ 964,111
Noncontrolling interest in consolidated statements of comprehensive income /(loss)	Year Ended December 31, 2016 2017 2018 Sogou $ 61,403 $ 77,025 $ 65,586 Changyou 47,645 7,603 27,137 Other 0 (105 ) 0 Total $ 109,048 $ 84,523 $ 92,723

Net Income _(Loss) per Share (T

Net Income /(Loss) per Share (Tables)	12 Months Ended
	Dec. 31, 2018
NET INCOME /(LOSS) PER SHARE [Abstract]
Calculation of basic and diluted net loss per share	Year Ended December 31, 2016 2017 2018 Numerator: Net loss attributable to Sohu.com Limited, basic $ (224,021 ) $ (554,526 ) $ (160,082 ) Effect of dilutive securities: Incremental dilution from Sogou 0 (1,233 ) (496 ) Incremental dilution from Changyou (1,639 ) (31 ) (382 ) Net loss attributable to Sohu.com Limited, diluted $ (225,660 ) $ (555,790 ) $ (160,960 ) Denominator: Weighted average basic ordinary shares outstanding 38,706 38,858 38,959 Effect of dilutive securities: Share options and restricted share units 0 0 0 Weighted average diluted ordinary shares outstanding $ 38,706 $ 38,858 $ 38,959 Basic net loss per share attributable to Sohu.com Limited $ (5.79 ) $ (14.27 ) $ (4.11 ) Diluted net loss per share attributable to Sohu.com Limited $ (5.83 ) $ (14.30 ) $ (4.13 )

Additional Information - Cond_2

Additional Information - Condensed Financial Information of Registrant (Tables)	12 Months Ended
	Dec. 31, 2018
ADDITIONAL INFORMATION - CONDENSED FINANCIAL INFORMATION OF REGISTRANT [Abstract]
Condensed balance sheets	As of December 31, 2017 2018 ASSETS Current assets: Cash and cash equivalents $ 2,845 $ 16,492 Prepaid and other current assets 2,285 1,169 Due from subsidiaries and VIEs 3,806 470,649 Total current assets 8,936 488,310 Interests in subsidiaries and VIEs 971,163 224,679 Other assets, net 0 27,736 Total assets $ 980,099 $ 740,725 LIABILITIES AND SHAREHOLDERS’ EQUITY Current liabilities 5,482 7,471 Long-term liabilities 223,983 144,414 Total liabilities 229,465 151,885 Shareholders’ equity: Ordinary Shares: $0.001 par value per share (75,400 shares authorized; 38,898 shares and 39,229 shares, respectively, issued and outstanding as of December 31, 2017 and 2018) 45 39 Additional paid-in 1,098,455 958,883 Treasury stock (5,890 shares and nil as of December 31, 2017 and 2018, respectively) (143,858 ) 0 Accumulated other comprehensive income 38,212 24,719 Accumulated deficit (242,220 ) (394,801 ) Total shareholders’ equity 750,634 588,840 Total liabilities and shareholders’ equity $ 980,099 $ 740,725
Condensed statements of comprehensive loss	Year Ended December 31, 2016 2017 2018 Revenues $ 0 $ 0 $ 0 Cost of revenues 0 0 0 Gross profit 0 0 0 Operating expenses: General and administrative 8,845 8,824 12,206 Operating loss (8,845 ) (8,824 ) (12,206 ) Share of loss of subsidiaries and VIEs (217,408 ) (331,106 ) (232,307 ) Other income /(expense) (54 ) 71 22 Interest income 107 152 5,865 Loss before income tax expense/(benefit) (226,200 ) (339,707 ) (238,626 ) Income tax expense/(benefit) (2,179 ) 214,819 (78,544 ) Net loss (224,021 ) (554,526 ) (160,082 ) Other comprehensive income /(loss) (46,931 ) 34,992 (13,494 ) Comprehensive loss $ (270,952 ) $ (519,534 ) $ (173,576 )
Condensed statements of cash flows	Year Ended December 31, 2016 2017 2018 Cash flows from operating activities: Net loss $ (224,021 ) $ (554,526 ) $ (160,082 ) Adjustments to reconcile net loss to net cash provided by operating activities: Investment loss from subsidiaries and VIEs 217,408 331,106 232,307 Share-based compensation expense /(benefit) 1,309 (814 ) (1,916 ) Others 0 0 (993 ) Changes in current assets and liabilities: Due from subsidiaries and VIEs 0 0 (2,963 ) Prepaid and other current assets 842 3,933 (3,996 ) Tax liabilities (2,014 ) 222,350 (79,569 ) Accrued liabilities (630 ) (8,194 ) 1,892 Net cash used in operating activities (7,106 ) (6,145 ) (15,320 ) Net decrease in cash, cash equivalents, restricted cash and restricted time deposits (7,106 ) (6,145 ) (15,320 ) Cash, cash equivalents, restricted cash and restricted time deposits at beginning of year 16,096 8,990 2,845 Cash and cash equivalents, restricted cash and restricted time deposits of Sohu.com Limited at the date of the liquidation of Sohu.com Inc. 0 0 29,207 Cash, cash equivalents, restricted cash and restricted time deposits at end of year $ 8,990 $ 2,845 $ 16,732 Reconciliation of cash, cash equivalents, and restricted time deposits to the condensed balance sheets: Cash and cash equivalents $ 8,990 $ 2,845 $ 16,492 Restricted time deposits included in other assets 0 0 240 Total cash, cash equivalents, restricted cash and restricted time deposits at end of year $ 8,990 $ 2,845 $ 16,732

The Company and Nature of Ope_3

The Company and Nature of Operations (Information of Subsidiaries and VIEs) (Details)	12 Months Ended
	Dec. 31, 2018
Beijing Century High-Tech Investment Co., Ltd. ("High Century") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Dec. 28, 2001
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Beijing Heng Da Yi Tong Information Technology Co., Ltd. ("Heng Da Yi Tong") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Feb. 7, 2002
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Beijing Sohu Internet Information Service Co., Ltd. ("Sohu Internet") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 31, 2003
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Beijing Sohu Donglin Advertising Co., Ltd. ("Donglin") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	May 17, 2010
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Tianjin Jinhu Culture Development Co., Ltd ("Tianjin Jinhu") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 24, 2011
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Beijing Focus Interactive Information Service Co., Ltd. ("Focus Interactive") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 15, 2014
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Guangzhou Qianjun Network Technology Co., Ltd ("Guangzhou Qianjun") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 25, 2014
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Beijing Sogou Information Service Co., Ltd.("Sogou Information") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Dec. 28, 2005
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Chengdu Easypay Technology Co., Ltd. ("Chengdu EasyPay") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jan. 19, 2015
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Beijing Gamease Age Digital Technology Co., Ltd. ("Gamease") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Aug. 23, 2007
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Shanghai ICE Information Technology Co., Ltd. ("Shanghai ICE") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	May 28, 2010
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Beijing Guanyou Gamespace Digital Technology Co., Ltd. ("Guanyou Gamespace") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Aug. 5, 2010
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Sohu.com (Hong Kong) Limited ("Sohu Hong Kong") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Apr. 19, 2000
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	100.00%
Beijing Sohu New Era Information Technology Co., Ltd. ("Sohu Era") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 25, 2003
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
All Honest International Limited ("All Honest") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Oct. 8, 2003
Place of Incorporation/Acquisition	British Virgin Islands
Effective Interest held	100.00%
Sohu.com (Search) Limited ("Sohu Search") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Oct. 28, 2005
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Beijing Sohu New Media Information Technology Co., Ltd. ("Sohu Media") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jun. 19, 2006
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Sohu.com (Game) Limited ("Sohu Game") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Feb. 11, 2008
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Beijing Sohu New Momentum Information Technology Co., Ltd. ("Sohu New Momentum") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	May 31, 2010
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Fox Video Investment Holding Limited ("Video Investment") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 25, 2011
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Fox Video Limited ("Sohu Video") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 26, 2011
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Fox Video (HK) Limited ("Video HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Sep. 30, 2011
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	100.00%
Fox Information Technology (Tianjin) Limited ("Video Tianjin") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 17, 2011
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	100.00%
Focus Investment Holding Limited ("Focus Investment") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 10, 2013
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Sohu Focus Limited ("Sohu Focus") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 11, 2013
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	100.00%
Sohu Focus (HK) Limited ("Focus HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 26, 2013
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	100.00%
Sogou Inc. ("Sogou") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Dec. 23, 2005
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	33.00%
Sogou (BVI) Limited ("Sogou BVI") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Dec. 23, 2005
Place of Incorporation/Acquisition	British Virgin Islands
Effective Interest held	33.00%
Beijing Sogou Technology Development Co., Ltd. ("Sogou Technology") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Feb. 8, 2006
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Sogou Hong Kong Limited ("Sogou HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Dec. 12, 2007
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	33.00%
Vast Creation Advertising Media Services Limited ("Vast Creation") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 30, 2011
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	33.00%
Beijing Sogou Network Technology Co., Ltd ("Sogou Network") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Mar. 29, 2012
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Sogou Technology Hong Kong Limited ("Sogou Technology HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Aug. 25, 2015
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	33.00%
Tianjin Sogou Network Technology Co., Ltd ("Tianjin Sogou Network") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	May 18, 2017
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Sogou (Shantou) Internet Microcredit Co., Ltd. ("Sogou Microcredit") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 22, 2017
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	33.00%
Changyou.com Limited ("Changyou") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Aug. 6, 2007
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	67.00%
Changyou.com (HK) Limited ("Changyou HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Aug. 13, 2007
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	67.00%
Beijing AmazGame Age Internet Technology Co., Ltd. ("AmazGame") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Sep. 26, 2007
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Beijing Changyou Gamespace Software Technology Co., Ltd. ("Gamespace") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Oct. 29, 2009
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Beijing Yang Fan Jing He Information Consulting Co., Ltd. ("Yang Fan Jing He") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Apr. 22, 2010
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Beijing Changyou Jingmao Film & Culture Communication Co., Ltd. ("Beijing Jingmao") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jan. 25, 2011
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Shanghai Jingmao Culture Communication Co., Ltd. ("Shanghai Jingmao") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jan. 25, 2011
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
7Road.com Limited ("7Road") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jun. 15, 2011
Place of Incorporation/Acquisition	Cayman Islands
Effective Interest held	67.00%
7Road.com HK limited ("7Road HK") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Jul. 6, 2011
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	67.00%
Changyou.com Webgames (HK) Limited ("Changyou HK Webgames") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Sep. 21, 2011
Place of Incorporation/Acquisition	Hong Kong
Effective Interest held	67.00%
Shenzhen Brilliant Imagination Technologies Co., Ltd. ("Brilliant Imagination") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Apr. 18, 2014
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%
Beijing Changyou Chuangxiang Software Technology Co., Ltd. ("Changyou Chuangxiang") [Member]
Organization and Nature of Operations [Line Items]
Date of Incorporation/Acquisition	Nov. 8, 2016
Place of Incorporation/Acquisition	People's Republic of China
Effective Interest held	67.00%

The Company and Nature of Ope_4

The Company and Nature of Operations (Sogou's Business, Intitial Public Offering of Sogou) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2018USD ($)Directorsshares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)
Organization and Nature of Operations [Line Items]
Proceeds from IPO, after deducting underwriting discounts and commissions and offering expenses | $		$ 0	$ 622,131	$ 0
One-time credit to additional paid-in capital in shareholders' equity resulted from the completion of Sogou's IPO | $			622,131
Sogou [Member]
Organization and Nature of Operations [Line Items]
Number of Directors entitled to elect or appoint under the Voting Agreement | Directors		7
Sogou [Member] | Within three years following the completion of Sogou's IPO [Member]
Organization and Nature of Operations [Line Items]
Provisions of the Voting Agreement		Within three years following the completion of Sogou's IPO, Sohu will vote all Sogou Class B Ordinary Shares and any Sogou Class A Ordinary Shares held by it and Tencent will vote 45,578,896 of its Sogou Class B Ordinary Shares to elect a Board of Directors consisting of seven directors, four of whom will be appointed by Sohu, two of whom will be appointed by Tencent, and the seventh of whom will be Sogou's then chief executive officer.
Sogou [Member] | After three years following the completion of Sogou's IPO [Member]
Organization and Nature of Operations [Line Items]
Provisions of the Voting Agreement		After three years following the completion of Sogou's IPO, Sohu will be entitled to choose to change the size and composition of Sogou's Board of Directors, subject to Tencent's right to appoint at least one director.
Sogou [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Number of Directors entitled to elect or appoint under the Voting Agreement | Directors		4
Combined voting power given to Sohu		50.10%
Sogou [Member] | Tencent Holdings Limited [Member]
Organization and Nature of Operations [Line Items]
Number of Directors entitled to elect or appoint under the Voting Agreement | Directors		2
Sogou [Member] | Tencent Holdings Limited [Member] | Minimum [Member]
Organization and Nature of Operations [Line Items]
Minimum percentage of issued shares held with respect to required terms		15.00%
Minimum percentage of consent from holder required		15.00%
Sogou [Member] | IPO [Member]
Organization and Nature of Operations [Line Items]
Proceeds from IPO, after deducting underwriting discounts and commissions and offering expenses | $			$ 622,100
Sogou [Member] | IPO [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
One-time credit to additional paid-in capital in shareholders' equity resulted from the completion of Sogou's IPO | $	$ 278,400
The condition period after the completion of Sogou's IPO to reinstate or terminate voting arrangements		5 years
Sogou [Member] | Ordinary Shares [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Approximate percentage of Sogou's total outstanding Class A and Class B Ordinary Shares		33.00%
Approximate voting power of Sogou's total outstanding Class A and Class B Ordinary Shares		44.00%
Total voting power held alone by Sohu to automatically suspend the voting arrangements with respect to the size and composition of Sogou's Board of Directors		50.00%
Sogou [Member] | Ordinary Shares [Member] | Sohu.com Limited [Member] | Minimum [Member]
Organization and Nature of Operations [Line Items]
Minimum percentage of issued shares held with respect to required terms		15.00%
Minimum percentage of consent from holder required		15.00%
Sogou [Member] | Ordinary Shares [Member] | Tencent Holdings Limited [Member]
Organization and Nature of Operations [Line Items]
Approximate percentage of Sogou's total outstanding Class A and Class B Ordinary Shares		38.00%
Approximate voting power of Sogou's total outstanding Class A and Class B Ordinary Shares		52.00%
Sogou [Member] | Ordinary Shares [Member] | Sohu and Tencent [Member] | Minimum [Member]
Organization and Nature of Operations [Line Items]
Minimum percentage of total voting power held by Sohu and Tencent together to remove and replace the directors appointed		50.00%
Sogou [Member] | Class A Ordinary Shares [Member] | IPO [Member]
Organization and Nature of Operations [Line Items]
Voting right entitled to ordinary shares			One vote per share
Share issued and sold upon initial public offering, number of shares			50,643,856
Sogou [Member] | Class A Ordinary Shares [Member] | Over-allotment Option [Member]
Organization and Nature of Operations [Line Items]
Share issued and sold upon initial public offering, number of shares			5,643,856
Sogou [Member] | Class B Ordinary Shares [Member] | Tencent Holdings Limited [Member] | Maximum [Member]
Organization and Nature of Operations [Line Items]
Maximum number of ordinary shares held by Tencent to be required to vote		45,578,896
Sogou [Member] | Class B Ordinary Shares [Member] | Tencent Holdings Limited [Member] | Within three years following the completion of Sogou's IPO [Member]
Organization and Nature of Operations [Line Items]
Number of ordinary shares to be voted to select directors		45,578,896
Sogou [Member] | Class B Ordinary Shares [Member] | IPO [Member]
Organization and Nature of Operations [Line Items]
Voting right entitled to ordinary shares			Ten votes per share
Conversion into Class A ordinary shares, shares, each Class B Ordinary Share			1
Sogou [Member] | Class B Ordinary Shares [Member] | IPO [Member] | Sohu.com Limited [Member] | Minimum [Member]
Organization and Nature of Operations [Line Items]
Minimum percentage of ordinary shares transfer to terminate the voting agreement		30.00%
Sogou [Member] | ADSs [Member] | IPO [Member]
Organization and Nature of Operations [Line Items]
Share issued and sold upon initial public offering, number of shares			50,643,856
Sogou [Member] | ADSs [Member] | Over-allotment Option [Member]
Organization and Nature of Operations [Line Items]
Share issued and sold upon initial public offering, number of shares			5,643,856

The Company and Nature of Ope_5

The Company and Nature of Operations (Sogou's Business, Sogou's Share Structure) (Details) - shares	Dec. 31, 2018	Dec. 31, 2017
Organization and Nature of Operations [Line Items]
Number of shares issued	39,229,000	38,898,000
Number of shares outstanding	39,229,000	38,898,000
Sogou [Member] | Ordinary Shares [Member]
Organization and Nature of Operations [Line Items]
Number of shares issued	397,158,375
Number of shares outstanding	397,158,375
Sogou [Member] | Class A Ordinary Shares [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding for legal purpose	5,805,000
Sogou [Member] | Class A Ordinary Shares [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	3,717,250
Sogou [Member] | Class A Ordinary Shares [Member] | Photon [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	24,686,863
Sogou [Member] | Class A Ordinary Shares [Member] | Other than Sohu,Tencent,and Photon [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	89,996,387
Sogou [Member] | Class B Ordinary Shares [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	127,200,000
Sogou [Member] | Class B Ordinary Shares [Member] | Tencent [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	151,557,875

The Company and Nature of Ope_6

The Company and Nature of Operations (Changyou's Business) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization and Nature of Operations [Line Items]
Revenues	$ 1,883,029	$ 1,860,962	$ 1,650,431
Number of shares issued	39,229,000	38,898,000
Number of shares outstanding	39,229,000	38,898,000
TLBB [Member]
Organization and Nature of Operations [Line Items]
Revenues	$ 200,900
Legacy TLBB Mobile [Member]
Organization and Nature of Operations [Line Items]
Revenues	$ 102,600
Product Risk [Member] | Total revenues [Member] | TLBB [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	11.00%
Product Risk [Member] | Total revenues [Member] | Legacy TLBB Mobile [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	5.00%
Changyou [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Percentage of outstanding equity capital held by the Company	67.00%
Voting power held by the Company	95.00%
Changyou [Member] | Ordinary Shares [Member]
Organization and Nature of Operations [Line Items]
Number of shares issued	106,501,420
Changyou [Member] | Ordinary Shares [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Percentage of outstanding equity capital held by the Company	67.00%
Changyou [Member] | Class A Ordinary Shares [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	1,500,000
Changyou [Member] | Class A Ordinary Shares [Member] | Public shareholders [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	34,751,420
Changyou [Member] | Class B Ordinary Shares [Member] | Sohu.com Limited [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	70,250,000
Changyou [Member] | ADSs [Member] | Public shareholders [Member]
Organization and Nature of Operations [Line Items]
Number of shares outstanding	34,751,420
Changyou [Member] | Product Risk [Member] | Online game revenues [Member] | TLBB [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	52.00%
Changyou [Member] | Product Risk [Member] | Online game revenues [Member] | Legacy TLBB Mobile [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	26.00%
Changyou [Member] | Product Risk [Member] | Total revenues [Member] | TLBB [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	41.00%
Changyou [Member] | Product Risk [Member] | Total revenues [Member] | Legacy TLBB Mobile [Member]
Organization and Nature of Operations [Line Items]
Percentage of concentration risk	21.00%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Basis of Consolidation and Recognition of Noncontrolling Interest, Noncontrolling Interest Recognition) (Details) - Changyou [Member] - Sohu.com Limited [Member]	Dec. 31, 2018
Noncontrolling Interest [Line Items]
Percentage of outstanding equity capital held by the Company	67.00%
Voting power held by the Company	95.00%

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Revenue Recognition, Adoption of ASC 606, Effect of Adoption of ASC 606) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 1,883,029	$ 1,860,962	$ 1,650,431
Cost of revenue-Online advertising-Search and search related advertising	1,071,721	1,035,166	859,800
Gross profit	811,308	825,796	790,631
Operating expenses-Sales and marketing	400,579	413,045	434,780
Operating loss	(160,525)	(209,178)	(117,134)
Income tax expense	(13,432)	273,148	21,072
Net loss	$ (67,359)	$ (470,003)	$ (114,973)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)	$ (14.27)	$ (5.79)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)	$ (14.30)	$ (5.83)
ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross profit	$ 811,308
Operating expenses-Sales and marketing	400,579
Operating loss	(160,525)
Income tax expense	13,432
Net loss	$ (67,359)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)
Without adoption of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross profit	$ 811,308
Operating expenses-Sales and marketing	396,226
Operating loss	(160,525)
Income tax expense	13,432
Net loss	$ (67,359)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)
Effect of change Higher/(Lower) [Member] | ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Gross profit	$ 0
Operating expenses-Sales and marketing	4,353
Operating loss	0
Income tax expense	0
Net loss	$ 0
Basic net loss per share attributable to Sohu.com Limited	$ 0
Diluted net loss per share attributable to Sohu.com Limited	$ 0
Brand advertising [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	$ 231,945	$ 314,066	$ 447,956
Cost of revenue-Online advertising-Search and search related advertising	184,474	363,592	371,085
Brand advertising [Member] | ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	231,945
Brand advertising [Member] | Without adoption of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	228,165
Brand advertising [Member] | Effect of change Higher/(Lower) [Member] | ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	3,780
Search and search related advertising [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,022,456	801,199	597,133
Cost of revenue-Online advertising-Search and search related advertising	664,164	$ 412,904	$ 290,158
Search and search related advertising [Member] | ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,022,456
Cost of revenue-Online advertising-Search and search related advertising	664,164
Search and search related advertising [Member] | Without adoption of ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	1,000,639
Cost of revenue-Online advertising-Search and search related advertising	642,920
Search and search related advertising [Member] | Effect of change Higher/(Lower) [Member] | ASC 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenues	21,817
Cost of revenue-Online advertising-Search and search related advertising	$ 21,244

Summary of Significant Accoun_6

Summary of Significant Accounting Policies (Revenue Recognition, Adoption of ASC 606, Revenues Disaggregated by Products and Services) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization and Nature of Operations [Line Items]
Revenues	$ 1,883,029	$ 1,860,962	$ 1,650,431
Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	274,221	372,728
Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	1,123,045	908,006
Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	485,763	580,228
Brand advertising [Member]
Organization and Nature of Operations [Line Items]
Revenues	231,945	314,066	447,956
Sohu Media Portal [Member]
Organization and Nature of Operations [Line Items]
Revenues	127,348	151,981
Sohu Media Portal [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	127,348	151,982
Sohu Media Portal [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Sohu Media Portal [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Sohu Video [Member]
Organization and Nature of Operations [Line Items]
Revenues	53,756	79,743
Sohu Video [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	53,756	79,743
Sohu Video [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Sohu Video [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Focus [Member]
Organization and Nature of Operations [Line Items]
Revenues	31,144	57,245
Focus [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	31,144	57,245
Focus [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Focus [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
17173.com Website [Member]
Organization and Nature of Operations [Line Items]
Revenues	19,697	25,096
17173.com Website [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
17173.com Website [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
17173.com Website [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	19,697	25,096
Search and search related advertising [Member]
Organization and Nature of Operations [Line Items]
Revenues	1,022,456	801,199	597,133
Search and search related advertising [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Search and search related advertising [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	1,022,456	801,199
Search and search related advertising [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Online games [Member]
Organization and Nature of Operations [Line Items]
Revenues	389,788	449,533	395,709
PC games [Member]
Organization and Nature of Operations [Line Items]
Revenues	236,743	239,149
PC games [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
PC games [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
PC games [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	236,743	239,149
Mobile games [Member]
Organization and Nature of Operations [Line Items]
Revenues	151,737	208,355
Mobile games [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Mobile games [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Mobile games [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	151,737	208,355
Other games [Member]
Organization and Nature of Operations [Line Items]
Revenues	1,310	2,029
Other games [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Other games [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Other games [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	1,310	2,029
Others [Member]
Organization and Nature of Operations [Line Items]
Revenues	238,840	296,164	$ 209,633
Cinema advertising business [Member]
Organization and Nature of Operations [Line Items]
Revenues	70,202	91,419
Cinema advertising business [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Cinema advertising business [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	0	0
Cinema advertising business [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	70,202	91,419
Others [Member]
Organization and Nature of Operations [Line Items]
Revenues	168,636	204,745
Others [Member] | Sohu [Member]
Organization and Nature of Operations [Line Items]
Revenues	61,973	83,759
Others [Member] | Sogou [Member]
Organization and Nature of Operations [Line Items]
Revenues	100,589	106,807
Others [Member] | Changyou [Member]
Organization and Nature of Operations [Line Items]
Revenues	$ 6,074	$ 14,180

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (Revenue Recognition, Contract Balances) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Allowance for doubtful accounts and authorized credits	$ 16,918	$ 5,663	$ 4,841	$ 3,976
Amount of revenue recognized that included in receipts in advance and deferred revenue	$ 111,700

Summary of Significant Accoun_8

Summary of Significant Accounting Policies (Share-based Compensation Expense) (Details) - Stock Options [Member] - shares	May 31, 2018	Jan. 04, 2012	Dec. 31, 2018	Jul. 28, 2016	Jun. 01, 2015
Sohu (excluding Sohu Video) [Member] | Sohu 2018 Share Incentive Plan [Member] | Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Four equal installments
Award vesting period	4 years
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted			Four equal installments
Award vesting period			4 years
Number of shares purchased on vested options			2,718,000
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted			Four equal installments
Award vesting period			4 years
Number of shares under contractually granted share options				100,000	1,998,000
Sohu Video [Member] | Video 2011 Share Incentive Plan [Member] | Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted			Four equal installments
Number of shares authorized for issuance		25,000,000
Percentage of outstanding ordinary shares on a fully-diluted basis		10.00%
Number of shares under contractually granted share options			16,368,200
Number of shares purchased on vested options			4,972,800

Summary of Significant Accoun_9

Summary of Significant Accounting Policies (Taxation) (Details) - USD ($) $ in Millions	3 Months Ended	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Apr. 30, 2018	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Taxation [Line Items]
Withholding tax rate on dividends, foreign invested enterprises to foreign holding companies				10.00%
Statutory income tax rate				25.00%	35.00%	35.00%
Provisional amount of income tax expense recognized for the Toll Charge	$ 219
Reduction in liability for deferred income tax	$ 4
Recognition of previously unrecognized tax benefit			$ 77	$ 77
Unrecognized tax benefit recorded in 2018				142
Interest in connection with unrecognized tax benefit			$ 2	$ 2
Thereafter tax years after December 31,2017 [Member]
Taxation [Line Items]
Statutory income tax rate				21.00%
Prior tax years before December 31,2017 [Member]
Taxation [Line Items]
Statutory income tax rate					35.00%
State Administration of Taxation, China [Member] | Minimum [Member]
Taxation [Line Items]
Value-added tax rate		6.00%	6.00%		6.00%	6.00%
State Administration of Taxation, China [Member] | Maximum [Member]
Taxation [Line Items]
Value-added tax rate		17.00%	16.00%		17.00%	17.00%
HONG KONG
Taxation [Line Items]
Preferential withholding tax rate on dividends, foreign invested enterprises				5.00%
State Administration of Taxation, China [Member]
Taxation [Line Items]
Withholding tax rate on dividends, foreign invested enterprises to foreign holding companies				10.00%
Statutory income tax rate				25.00%
State Administration of Taxation, China [Member] | HONG KONG
Taxation [Line Items]
Preferential withholding tax rate on dividends, foreign invested enterprises				5.00%

Summary of Significant Accou_10

Summary of Significant Accounting Policies (Estimated Useful Lives of Fixed Assets) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)
Office buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	36-47
Fixed assets, residual value	$ 0
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	Lesser of term of the lease or the estimated useful lives of the assets
Fixed assets, residual value	$ 0
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	4-10
Fixed assets, residual value	$ 0
Office furniture [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	5
Fixed assets, residual value	$ 0
Computer equipment and hardware [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (years)	2-5
Fixed assets, residual value	$ 0

Summary of Significant Accou_11

Summary of Significant Accounting Policies (Estimated Useful Lives of Intangible Assets) (Details)	12 Months Ended
	Dec. 31, 2018USD ($)
Purchased Video content [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	1 month to 2 years
Intangible assets, residual value	$ 0
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	1-5
Intangible assets, residual value	$ 0
Developed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	3-10
Intangible assets, residual value	$ 0
Domain names and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	4-30
Intangible assets, residual value	$ 0
Operating rights for licensed games [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives (years)	over the contract terms
Intangible assets, residual value	$ 0

Summary of Significant Accou_12

Summary of Significant Accounting Policies (Impact of Recently Issued Accounting Pronouncements not Yet Adopted) (Details) - Accounting Standards Update 2016-02 [Member] - Scenario, Forecast [Member] $ in Millions	Jan. 01, 2019USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amount of right-of-use asset expected to be recorded after adoption of ASU 2016-02	$ 26.7
Amount of lease liability expected to be recorded of ASU 2016-02	$ 24.2

Segment Information (Segment Op

Segment Information (Segment Operating Information by Segment) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Operating Segments [Member] | Sohu [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	$ 274,670		$ 374,696		$ 468,515
Segment cost of revenues		(218,184)		(414,526)		(391,417)
Segment gross profit		56,486		(39,830)		77,098
SBC in cost of revenues	[2]	707		415		(164)
Gross profit		57,193		(39,415)		76,934
Operating expenses:
Product development		(123,743)	[3]	(113,590)	[4]	(96,815)	[4]
Sales and marketing	[1]	(203,307)	[3]	(199,304)	[4]	(259,800)	[4]
General and administrative		(48,664)	[3]	(44,563)	[4]	(47,804)	[4]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions		0		0
SBC in operating expenses	[2]	4,940		(765)		(1,703)
Total operating expenses		(370,774)		(358,222)		(406,122)
Operating profit /(loss)		(313,581)		(397,637)		(329,188)
Other income /(expense), net		345,416	[3]	4,694	[4]	5,360	[4]
Interest income	[5]	14,001		7,344		8,879
Interest expense	[5]	(39,709)		(24,367)		(10,103)
Exchange difference		1,981		(2,107)		2,349
Income /(loss) before income tax benefit /(expense)		8,108		(412,073)		(322,703)
Income tax benefit /(expense)		79,052		(217,959)		538
Net income /(loss)		87,160		(630,032)		(322,165)
Operating Segments [Member] | Sogou [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	1,124,158		908,357		660,408
Segment cost of revenues		(692,801)		(456,861)		(302,565)
Segment gross profit		431,357		451,496		357,843
SBC in cost of revenues	[2]	(669)		(540)		(171)
Gross profit		430,688		450,956		357,672
Operating expenses:
Product development		(191,426)	[3]	(156,359)	[4]	(132,749)	[4]
Sales and marketing	[1]	(144,867)	[3]	(152,121)	[4]	(121,303)	[4]
General and administrative		(36,177)	[3]	(25,407)	[4]	(19,308)	[4]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions		0		0
SBC in operating expenses	[2]	(13,535)		(27,193)		(8,680)
Total operating expenses		(386,005)		(361,080)		(282,040)
Operating profit /(loss)		44,683		89,876		75,632
Other income /(expense), net		41,489	[3]	692	[4]	(26,027)	[4]
Interest income	[5]	8,037		9,126		5,198
Interest expense	[5]	0		0		0
Exchange difference		5,725		(7,082)		5,346
Income /(loss) before income tax benefit /(expense)		99,934		92,612		60,149
Income tax benefit /(expense)		(1,153)		(14,422)		(27)
Net income /(loss)		98,781		78,190		60,122
Operating Segments [Member] | Changyou [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	485,763		580,261		525,385
Segment cost of revenues		(160,859)		(163,713)		(165,779)
Segment gross profit		324,904		416,548		359,606
SBC in cost of revenues	[2]	31		(73)		(31)
Gross profit		324,935		416,475		359,575
Operating expenses:
Product development		(126,593)	[3]	(124,869)	[4]	(118,738)	[4]
Sales and marketing	[1]	(54,800)	[3]	(59,705)	[4]	(55,971)	[4]
General and administrative		(33,622)	[3]	(37,218)	[4]	(45,642)	[4]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions		(16,369)		(86,882)
SBC in operating expenses	[2]	6,430		(17,320)		(8,371)
Total operating expenses		(224,954)		(325,994)		(228,722)
Operating profit /(loss)		99,981		90,481		130,853
Other income /(expense), net		22,879	[3]	9,374	[4]	15,523	[4]
Interest income	[5]	34,409		32,319		21,490
Interest expense	[5]	(10,197)		(4,372)		(4,321)
Exchange difference		1,320		(5,196)		5,108
Income /(loss) before income tax benefit /(expense)		148,392		122,606		168,653
Income tax benefit /(expense)		(64,467)		(40,767)		(21,583)
Net income /(loss)		83,925		81,839		147,070
Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	(1,562)		(2,352)		(3,877)
Segment cost of revenues		54		132		327
Segment gross profit		(1,508)		(2,220)		(3,550)
SBC in cost of revenues	[2]	0		0		0
Gross profit		(1,508)		(2,220)		(3,550)
Operating expenses:
Product development		6,733	[3]	6,192	[4]	4,342	[4]
Sales and marketing	[1]	2,800	[3]	4,000	[4]	4,688	[4]
General and administrative		367	[3]	130	[4]	89	[4]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions		0		0
SBC in operating expenses	[2]	0		0		0
Total operating expenses		9,900		10,322		9,119
Operating profit /(loss)		8,392		8,102		5,569
Other income /(expense), net		(345,617)	[3]	(8,102)	[4]	(5,569)	[4]
Interest income	[5]	(32,368)		(24,651)		(13,068)
Interest expense	[5]	32,368		24,651		13,068
Exchange difference		0		0		0
Income /(loss) before income tax benefit /(expense)		(337,225)		0		0
Income tax benefit /(expense)		0		0		0
Net income /(loss)		(337,225)		0		0
Revenues		1,883,029		1,860,962		1,650,431
Segment cost of revenues		(1,071,790)		(1,034,968)		(859,434)
Segment gross profit		811,239		825,994		790,997
SBC in cost of revenues	[2]	69		(198)		(366)
Gross profit		811,308		825,796		790,631
Product development		(435,029)	[3]	(388,626)	[4]	(343,960)	[4]
Sales and marketing	[1]	(400,174)	[3]	(407,130)	[4]	(432,386)	[4]
General and administrative		(118,096)	[3]	(107,058)	[4]	(112,665)	[4]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions		(16,369)		(86,882)		0
SBC in operating expenses	[2]	(2,165)		(45,278)		(18,754)
Total operating expenses		(971,833)		(1,034,974)		(907,765)
Operating profit /(loss)		(160,525)		(209,178)		(117,134)
Other income /(expense), net		64,167		6,658		(10,713)
Interest income		24,079		24,138		22,499
Interest expense		(17,538)		(4,088)		(1,356)
Exchange difference		9,026		(14,385)		12,803
Income /(loss) before income tax benefit /(expense)		(80,791)		(196,855)		(93,901)
Income tax benefit /(expense)		13,432		(273,148)		(21,072)
Net income /(loss)		(67,359)		(470,003)		$ (114,973)
Sohu [Member]
Segment Reporting Information [Line Items]
Revenues		274,221		372,728
Sogou [Member]
Segment Reporting Information [Line Items]
Revenues		1,123,045		908,006
Changyou [Member]
Segment Reporting Information [Line Items]
Revenues		$ 485,763		$ 580,228
[1]	The elimination mainly consists of revenues and expenses generated from marketing services among the Sohu, Sogou and Changyou segments.
[2]	"SBC" stands for share-based compensation expense.
[3]	The elimination mainly consists of the distribution by Changyou of a dividend to Sohu in 2018 and leasing income and expenses generated from a building that Sohu leases to Sogou.
[4]	The elimination mainly consists of leasing income and expenses generated from a building that Sohu leases to Sogou.
[5]	The elimination represents interest income/(expense) resulting from intra-Group loans between the Sohu segment and the Changyou segment.

Segment Information (Segment As

Segment Information (Segment Assets Information by Segment) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Operating Segments [Member] | Sohu [Member]
Segment Reporting Information [Line Items]
Cash and cash equivalents		$ 180,004	$ 98,750
Account and financing receivables, net		78,383	86,801
Fixed assets, net		186,758	200,561
Total assets	[1]	1,319,490	1,124,759
Operating Segments [Member] | Sogou [Member]
Segment Reporting Information [Line Items]
Cash and cash equivalents		185,175	694,207
Account and financing receivables, net		145,401	72,117
Fixed assets, net		147,495	139,209
Total assets	[1]	1,462,844	1,321,036
Operating Segments [Member] | Changyou [Member]
Segment Reporting Information [Line Items]
Cash and cash equivalents		454,534	571,139
Account and financing receivables, net		57,389	91,636
Fixed assets, net		170,745	189,947
Total assets	[1]	1,965,484	1,922,023
Eliminations [Member]
Segment Reporting Information [Line Items]
Cash and cash equivalents		0	0
Account and financing receivables, net		0	(86)
Fixed assets, net		0	0
Total assets	[1]	(1,449,309)	(978,579)
Cash and cash equivalents		819,713	1,364,096
Account and financing receivables, net		281,173	250,468
Fixed assets, net		504,998	529,717
Total assets		$ 3,298,509	$ 3,389,239
[1]	The elimination for segment assets mainly consists of elimination of intra-Group loans between Sohu and Changyou, and elimination of long-term investments in subsidiaries and consolidated VIEs.

Share-based Compensation Expe_3

Share-based Compensation Expense (Share-based Compensation Expense Recognized in Costs and Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 2,095	$ 45,477	$ 19,120
Cost of revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	(69)	198	366
Product development expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	6,131	23,547	9,184
Sales and marketing expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	405	5,915	2,394
General and administrative expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ (4,372)	$ 15,817	$ 7,176

Share-based Compensation Expe_4

Share-based Compensation Expense (Share-based Compensation Expense Recognized for Share Awards of Sohu (excluding Sohu Video), Sogou, Changyou and Sohu Video) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,095,000	$ 45,477,000	$ 19,120,000
Capitalized share-based compensation expense		0	0	0
Sohu (excluding Sohu Video) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		(5,100,000)	652,000	2,761,000
Sogou [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	[1]	14,204,000	27,729,000	8,802,000
Changyou [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		(6,461,000)	17,394,000	8,402,000
Sohu Video [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ (548,000)	$ (298,000)	$ (845,000)
[1]	Compensation expense for Sogou share-based awards also includes compensation expense for Tencent restricted share units that Tencent had granted to employees who transferred to Sogou with the Soso search and search-related businesses.

Advertising and Promotional E_2

Advertising and Promotional Expenses, included in Sales and Marketing Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ADVERTISING AND PROMOTIONAL EXPENSES, INCLUDED IN SALES AND MARKETING EXPENSES [Abstract]
Advertising and promotional expenses	$ 239	$ 249.7	$ 270.2

Other Income _(Expense), net (D

Other Income /(Expense), net (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
OTHER INCOME /(EXPENSE), NET [Abstract]
Gain from the changes in fair value of financial instruments	[1]	$ 40,054	$ 6,665	$ 13,133
Investment income/(expense)	[2]	14,565	(2,051)	(1,908)
Government grant		5,460	2,166	2,112
Donations	[3]	(70)	(218)	(27,982)
Write-off of unpaid long-term accounts payable		0	2,031	0
Impairment loss on available-for-sale equity securities		0	(5,754)	0
Others		4,158	3,819	3,932
Total		$ 64,167	$ 6,658	$ (10,713)
[1]	The increase for 2018 compared to 2017 mainly consisted of $33.4 million in income earned from investments in financial instruments.
[2]	The increase for 2018 compared to 2017 mainly consisted of $17.8 million in investment income recognized in the third quarter of 2018 by Sogou due to the observable change in the price of Zhihu Technology Limited ("Zhihu") after the adoption of ASU 2016-01, offset by a $3.6 million investment loss representing a change in the fair value of Hylink Digital Solution Co., Ltd ("Hylink").
[3]	In the second quarter of 2016, the Sohu Group recognized a one-time expense of $27.8 million that was related to a donation by Sogou to Tsinghua University related to setting up a joint research institute focusing on artificial intelligence technology.

Other Income _(Expense), net (N

Other Income /(Expense), net (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expense [Line Items]
Income earned from investment in financial instruments				$ 33,400
Other-than-temporary impairment of available-for-sale equity investment				0	$ 5,754	$ 0
Keyeast [Member]
Other Income and Expense [Line Items]
Other-than-temporary impairment of available-for-sale equity investment		$ 5,800
Sogou [Member]
Other Income and Expense [Line Items]
One-time expense related to donation			$ 27,800
Sogou [Member] | Accounting Standards Update 2016-02 [Member] | Zhihu Technology Limited ("Zhihu") [Member]
Other Income and Expense [Line Items]
Investment income recognized for observable price change in Zhihu	$ 17,800
Sogou [Member] | Accounting Standards Update 2016-02 [Member] | Hylink Digital Solution Co., Ltd ("Hylink") [Member]
Other Income and Expense [Line Items]
Investment loss for fair value change in Hylink				$ 3,600

Balance Sheet Components Accoun

Balance Sheet Components Account and Financing Receivanles, net (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Account and financing receivables, net
Accounts receivable	$ 251,853	$ 256,131
Financing receivables	46,238	0
Allowance for doubtful accounts and credit losses	(16,918)	(5,663)	$ (4,841)	$ (3,976)
Accounts receivable, net	$ 281,173	$ 250,468

Balance Sheet Components Moveme

Balance Sheet Components Movement of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
BALANCE SHEET COMPONENTS [Abstract]
Balance at the beginning of year	$ 5,663	$ 4,841	$ 3,976
Additional provision for bad debt, net of recoveries	15,659	9,076	7,109
Write-offs	(3,848)	(8,634)	(5,992)
Exchange difference	(556)	380	(252)
Balance at the end of year	$ 16,918	$ 5,663	$ 4,841

Balance Sheet Components Other

Balance Sheet Components Other Assests and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Prepaid and other current assets
Matching loan due from a related party	$ 31,607	$ 32,005
Prepaid content and license	30,033	35,442
Prepaid taxes	30,524	35,551
Receivables from third party payment service providers	14,012	367
Prepaid cost of revenue	13,794	14,782
Inventory	12,726	4,730
Prepaid rental deposit	9,287	9,314
Receivables from third party payment platforms	8,844	3,350
Interest receivable from short term investments	3,645	2,515
Prepaid office rent and facilities expenses	3,025	3,265
Employee advances	2,275	4,109
Prepaid advertising and promotion fees	230	3,371
Loans to third parties	0	28,544
Due from 7Road	0	5,344
Others	8,303	9,986
Prepaid and other current assets	168,305	192,675
Prepaid non-current assets
Prepaid PRC income tax for the sale of assets associated with 17173.com by Sohu to Changyou	2,870	4,020
Others	237	191
Prepaid non-current assets	3,107	4,211
Other short-term liabilities
Contract deposits from advertisers	40,073	29,078
Matching loans due to a related party	32,719	31,192
Deposits related to Focus	21,648	29,889
Donation payable	0	7,652
Consideration payable for equity investment	5,960	6,427
Depository payable reimbursement	4,985	0
Early exercise of Sogou share options for trust arrangements	2,702	4,503
Accrued liabilities to suppliers	3,288	6,725
Government grant	0	765
Foreign exchange forward contracts		715
Others	12,710	19,354
Other short-term liabilities	124,085	136,300
Receipts in advance and deferred revenue
Receipts in advance relating to brand advertising business	10,069	12,858
Receipts in advance relating to search and search-related business	65,465	66,223
Receipts in advance relating to online game business	19,014	18,498
Receipts in advance relating to others business	3,602	5,327
Total receipts in advance	98,150	102,906
Deferred revenue	26,632	24,852
Receipts in advance and deferred revenue	$ 124,782	$ 127,758

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	1 Months Ended			12 Months Ended
	Feb. 29, 2016	Apr. 30, 2015	Aug. 31, 2014	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Interest expense incurred				$ 519	$ 724	$ 662
Interest income earned				1,051	1,157	$ 1,244
Interest income receivable from related parities				3,645	2,515
Changyou [Member] | Fox Financial Technology Group Limited [Member]
Related Party Transaction [Line Items]
Loans payable to related parities				32,700	29,800
Loans receivable from related parities				31,600	29,800
Interest expense incurred				500	700
Interest income earned				$ 1,100	1,200
Interest expense payable to related parities					1,400
Interest income receivable from related parities					$ 2,200
Sohu [Member] | Fox Financial Technology Group Limited [Member]
Related Party Transaction [Line Items]
Investment amount in period	$ 10,500	$ 16,100	$ 4,800

Intra-Group Loan and Share Pl_2

Intra-Group Loan and Share Pledge Agreement (Details) ¥ in Millions, $ in Millions

Oct. 24, 2016USD ($)

Oct. 24, 2016CNY (¥)

Apr. 30, 2017USD ($)

Apr. 30, 2017CNY (¥)

Mar. 31, 2017USD ($)

Mar. 31, 2017CNY (¥)

Dec. 31, 2016USD ($)

Dec. 31, 2016CNY (¥)

Dec. 31, 2018USD ($)shares

Dec. 31, 2018CNY (¥)shares

Dec. 31, 2017USD ($)

Dec. 31, 2017CNY (¥)

Sohu Media [Member] | AmazGame [Member] | Loan Agreement [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Maximum amount of loan Sohu Media can borrow from AmazGame

$ 145.7

¥ 1,000

Annual interest rate

6.00%

6.00%

Loans received from related parties

$ 43.7

¥ 300

$ 29.1

¥ 200

$ 72.9

¥ 500

Total outstanding balance of loan received from related parties

$ 15.3

¥ 1,000

Sohu Game [Member] | Changyou [Member] | Share Pledge Agreement [Member] | ADSs [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Consecutive trading days

10 days

10 days

Sohu Game [Member] | Changyou [Member] | Share Pledge Agreement [Member] | ADSs [Member] | Minimum [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Percentage of additional incremental share price drop

20.00%

20.00%

Sohu Game [Member] | Changyou [Member] | Share Pledge Agreement [Member] | Class B Ordinary Shares [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Consecutive trading days

10 days

10 days

Shares pledged

21,847,751

21,847,751

Sohu Game [Member] | Changyou [Member] | Share Pledge Agreement [Member] | Class B Ordinary Shares [Member] | Minimum [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Percentage of share price drop

20.00%

20.00%

Video Tianjin [Member] | AmazGame [Member] | Supplementary Agreement [Member]

Intracompany Loan and Share Pledge Agreement [Line Items]

Total outstanding balance of loan received from related parties

$ 145.7

¥ 1,000

Fair Value Measurements (Financ

Fair Value Measurements (Financial Instruments, Measured at Fair Value) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted time deposit	$ 244,179,000	$ 271,000
Equity investments with readily determinable fair values	0
Foreign exchange forward contracts recognized in other short-term liabilities		715,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	595,702,000	1,136,892,000
Short-term investments	1,041,395,000	818,934,000
Restricted time deposit	244,179,000
Equity investments with readily determinable fair values	6,790,000	21,307,000
Foreign exchange forward contracts recognized in other short-term liabilities		715,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Restricted time deposit	0
Equity investments with readily determinable fair values	6,790,000	21,307,000
Foreign exchange forward contracts recognized in other short-term liabilities		0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	595,702,000	1,136,892,000
Short-term investments	1,041,395,000	818,934,000
Restricted time deposit	244,179,000
Equity investments with readily determinable fair values	0	0
Foreign exchange forward contracts recognized in other short-term liabilities		715,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Restricted time deposit	0
Equity investments with readily determinable fair values	$ 0	0
Foreign exchange forward contracts recognized in other short-term liabilities		$ 0

Fair Value Measurements (Short-

Fair Value Measurements (Short-term Investments, Narrative) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in financial instruments	$ 1,041,395	$ 818,934
Change in fair value of short-term investments	$ 40,300	$ 13,900

Fair Value Measurements (Foreig

Fair Value Measurements (Foreign Exchange Forward Contracts, Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Jan. 31, 2017	Sep. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign exchange forward contracts recognized in other short-term liabilities			$ 715,000
Changyou [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional amount of foreign exchange forward contracts				$ 50,000,000	$ 100,000,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized loss resulting from changes in fair value of foreign exchange forward contracts			(7,200,000)
Cash outflows under forward contracts		$ 900,000	3,500,000
Foreign exchange forward contracts recognized in other short-term liabilities			$ 715,000
Fair Value, Measurements, Recurring [Member] | Changyou [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized loss on settlement of foreign exchange forward contracts	$ (200,000)
Foreign exchange forward contracts recognized in other short-term liabilities		$ 0

Fair Value Measurements (Restri

Fair Value Measurements (Restricted Time Deposits, Narrative) (Details) - Changyou [Member] $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income from restricted time deposits	$ 1.7
Interest expense on bank loans	$ 1.4

Fair Value Measurements (Equity

Fair Value Measurements (Equity Investments, Effect of Adoption of ASU 2016-01, Comparative Presentations of Line Items in Condensed Consolidated Statement of Comprenhensive Income) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss	$ (160,525)	$ (209,178)	$ (117,134)
Other income /(expense), net	64,167	6,658	(10,713)
Income tax expense /(benefit)	(13,432)	273,148	21,072
Net loss	(67,359)	(470,003)	(114,973)
Foreign currency translation adjustments	(37,339)	56,250	(73,235)
Change in unrealized gain for equity securities with readily determinable fair values	0	12,179	(3,920)
Other comprehensive income /(loss)	(37,339)	68,429	(77,155)
Comprehensive loss	$ (104,698)	$ (401,574)	$ (192,128)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)	$ (14.27)	$ (5.79)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)	$ (14.30)	$ (5.83)
Without adoption of ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss	$ (160,525)
Other income /(expense), net	49,828
Income tax expense /(benefit)	(12,542)
Net loss	(82,588)
Foreign currency translation adjustments	(37,339)
Change in unrealized gain for equity securities with readily determinable fair values	(2,743)
Other comprehensive income /(loss)	(40,082)
Comprehensive loss	$ (122,670)
Basic net loss per share attributable to Sohu.com Limited	$ (4.19)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.21)
ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss	$ (160,525)
Other income /(expense), net	64,167
Income tax expense /(benefit)	(13,432)
Net loss	(67,359)
Foreign currency translation adjustments	(37,339)
Change in unrealized gain for equity securities with readily determinable fair values	0
Other comprehensive income /(loss)	(37,339)
Comprehensive loss	$ (104,698)
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)
ASU 2016-01 [Member] | Effect of change Higher/(Lower) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating loss	$ 0
Other income /(expense), net	14,339
Income tax expense /(benefit)	(890)
Net loss	15,229
Foreign currency translation adjustments	0
Change in unrealized gain for equity securities with readily determinable fair values	2,743
Other comprehensive income /(loss)	2,743
Comprehensive loss	$ 17,972
Basic net loss per share attributable to Sohu.com Limited	$ 0.08
Diluted net loss per share attributable to Sohu.com Limited	$ 0.08

Fair Value Measurements (Equi_2

Fair Value Measurements (Equity Investments, Effect of Adoption of ASU 2016-01, Comparative Presentations of Line Items in Condensed Consolidated Balance Sheet) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term investments, net	$ 108,356,000	$ 90,145,000
Deferred tax liabilities	85,264,000	43,392,000
Accumulated other comprehensive income	24,719,000	38,212,000
Accumulated deficit	(394,801,000)	$ (242,220,000)
Without adoption of ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term investments, net	17,999,000
Deferred tax liabilities	27,000
Accumulated other comprehensive income	(4,758,000)
Accumulated deficit	4,745,000
ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term investments, net	108,356,000
Deferred tax liabilities	85,264,000
Accumulated other comprehensive income	24,719,000
Accumulated deficit	(394,801,000)
ASU 2016-01 [Member] | Without adoption of ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long term investments, net	90,357,000
Deferred tax liabilities	85,237,000
Accumulated other comprehensive income	29,477,000
Accumulated deficit	$ (399,546,000)

Fair Value Measurements (Equi_3

Fair Value Measurements (Equity Investments, Equity Investments Accounted for Using the Equity Method, Narrative) (Details) - Sohu [Member] - Investment in Fox Financial [Member] - USD ($) $ in Millions	1 Months Ended			3 Months Ended
	Feb. 29, 2016	Apr. 30, 2015	Aug. 31, 2014	Mar. 31, 2017	Dec. 31, 2018	Feb. 28, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment amount in period	$ 10.5	$ 16.1	$ 4.8
Percentage of ordinary shares held by Sohu				6.00%		7.00%
Dilution gain recognized in other income				$ 0.7
Carrying value of Sohu's investment in Fox Financial					$ 23.8

Fair Value Measurements (Equi_4

Fair Value Measurements (Equity Investments, Equity Investments with Readily Determinable Fair Values, Narrative) (Details) ¥ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2018CNY (¥)	Aug. 02, 2017	Aug. 12, 2014USD ($)	May 05, 2011USD ($)	May 05, 2011CNY (¥)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment loss			$ 0		$ 5,754,000	$ 0
Fair value of equity interests			0
Sohu [Member] | Investment in Keyeast Co., Ltd. ("Keyeast") [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of total outstanding common shares acquired									6.00%
Purchase price of equity investment									$ 15,100,000
Impairment loss		$ 5,800,000
Reclassification of other comprehensive income to accumulated deficit			900,000
Disposal of equity interest	$ 11,200,000
Disposal gain of equity interest	$ 1,000,000
Sohu [Member] | Investment in Hylink Digital Solution Co., Ltd ("Hylink") [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of total outstanding common shares acquired										2.00%	2.00%
Reclassification of other comprehensive income to accumulated deficit			6,600,000	¥ 43.2
Percentage of equity interest acquired and accounted under cost method								1.50%
Purchase price of equity interest acquired and accounted under cost method										$ 2,300,000	¥ 15
Fair value of equity interests			6,800,000				¥ 46.6
Unrealized gain representing change in fair value			$ 3,900,000	¥ 26

Fair Value Measurements (Equi_5

Fair Value Measurements (Equity Investments, Equity Investments without Readily Determinable Fair Values, Narrative) (Details) $ in Thousands, ¥ in Millions		3 Months Ended	12 Months Ended
		Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2018CNY (¥)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment income	[1]		$ 14,565	$ (2,051)	$ (1,908)
Sogou [Member] | Long-term Investment in Zhihu [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investment, amount		$ 18,900	$ 18,900
Investment income		$ 17,800
Sogou [Member] | Long-term Investment in Hainan Yun Jiang [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investment, amount						$ 12,700	¥ 80
[1]	The increase for 2018 compared to 2017 mainly consisted of $17.8 million in investment income recognized in the third quarter of 2018 by Sogou due to the observable change in the price of Zhihu Technology Limited ("Zhihu") after the adoption of ASU 2016-01, offset by a $3.6 million investment loss representing a change in the fair value of Hylink Digital Solution Co., Ltd ("Hylink").

Fair Value Measurements (Shor_2

Fair Value Measurements (Short-term Receivables and Payables, Narrative) (Details) ¥ in Millions	1 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2018CNY (¥)	Apr. 30, 2018USD ($)	Apr. 30, 2018CNY (¥)	Sep. 30, 2017USD ($)	Sep. 30, 2017CNY (¥)	Jul. 31, 2017USD ($)	Jul. 31, 2017CNY (¥)	May 31, 2017USD ($)	May 31, 2017CNY (¥)	Dec. 31, 2018USD ($)	Dec. 31, 2018CNY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2017CNY (¥)	Jul. 01, 2017	May 31, 2017CNY (¥)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term bank loans											$ 129,677,000		$ 61,216,000
Long-term bank loans											302,323,000		122,433,000
Sohu [Member] | Factoring contract with recourse with HSBC [Member] | HSBC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans may borrow from bank									$ 26,200,000	¥ 180
Accounts receivable to secure short-term bank loan									28,800,000							¥ 198
Short-term bank loans											0		0
Sohu [Member] | Credit agreements with Ping An Bank [Member] | Ping An Bank [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans may borrow from bank					$ 87,400,000	¥ 60			$ 364,300,000	¥ 2,500
Short-term bank loans											58,300,000	¥ 400	0
Times over reference interest rate							150.00%	150.00%	115.00%	115.00%
Loan received from bank							$ 58,300,000	¥ 400
Short-term loan, interest rate															6.525%
Sohu [Member] | Credit agreement with ICBC [Member] | ICBC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans may borrow from bank					$ 116,600,000	¥ 800
Short-term bank loans											58,300,000	400
Installments of bank loan payable					Four equal installments, with the first installment payable 18 months after the drawdown and the other three installments payable semi-annually at the end of each of the three successive six-month periods after the first installment payment	Four equal installments, with the first installment payable 18 months after the drawdown and the other three installments payable semi-annually at the end of each of the three successive six-month periods after the first installment payment
Additional interest rate over LPR					1.20%	1.20%
Total outstanding balance of bank loan											116,600,000	800	$ 116,600,000	¥ 800
Long-term bank loans											58,300,000	400
Sohu [Member] | Credit agreement with CMB [Member] | CMB [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans may borrow from bank			$ 102,000,000	¥ 700
Short-term bank loans											71,400,000	490
Loan received from bank	$ 43,700,000	¥ 300	$ 58,300,000	¥ 400
Short-term loan, interest rate			6.00%	6.00%
Installments of bank loan payable			Four installments, with the first installment of RMB45 million (or $6.7 million) having been paid in December 2018, and the other three installments payable semi-annually at the end of each of the three successive six-month periods after the first installment payment	Four installments, with the first installment of RMB45 million (or $6.7 million) having been paid in December 2018, and the other three installments payable semi-annually at the end of each of the three successive six-month periods after the first installment payment
Total outstanding balance of bank loan											95,400,000	655
Long-term bank loans											$ 24,100,000	¥ 165

Fair Value Measurements (Assets

Fair Value Measurements (Assets Measured at Fair Value on a Nonrecurring Basis) (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchased video content recorded in prepaid and other assets	$ 5,504	$ 10,192
Intangible assets, net	24,118	23,060
Goodwill	53,263	71,565
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchased video content recorded in prepaid and other assets	0	0
Intangible assets, net	0	0
Goodwill	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchased video content recorded in prepaid and other assets	0	0
Intangible assets, net	0	0
Goodwill	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Purchased video content recorded in prepaid and other assets	5,504	10,192
Intangible assets, net	24,118	23,060
Goodwill	$ 53,263	$ 71,565

Fixed Assets (Details)

Fixed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 853,304	$ 839,940
Accumulated depreciation	(348,306)	(310,223)
Fixed assets, net	504,998	529,717
Depreciation expenses for fixed assets	93,037	83,114	$ 73,449
Office buildings [Member]
Property, Plant and Equipment [Line Items]
Fixed assets, gross	372,723	391,490
Computer equipment and hardware [Member]
Property, Plant and Equipment [Line Items]
Fixed assets, gross	418,624	388,693
Leasehold and building improvements [Member]
Property, Plant and Equipment [Line Items]
Fixed assets, gross	49,164	45,849
Office furniture [Member]
Property, Plant and Equipment [Line Items]
Fixed assets, gross	8,878	9,879
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 3,915	$ 4,029

Goodwill (Carrying Value of Goo

Goodwill (Carrying Value of Goodwill by Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 261,270	$ 174,525
Accumulated impairment losses, Beginning Balance	(189,705)	(106,235)
Goodwill, Net, Beginning Balance	71,565	68,290
Transactions in Period [Abstract]
Goodwill associated with MoboTap and reclassified from assets held for sale to assets held for use		83,470
Goodwill impairment recognized for MoboTap		(83,470)
Goodwill associated with an acquisition		1,000
Foreign currency translation adjustment	(1,933)	2,275
Impairment losses	(16,369)
Goodwill, Ending balance	255,795	261,270
Accumulated impairment losses, Ending balance	(202,532)	(189,705)
Goodwill, Net, Ending balance	53,263	71,565
Operating Segments [Member] | Sohu [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	73,941	72,011
Accumulated impairment losses, Beginning Balance	(35,788)	(35,788)
Goodwill, Net, Beginning Balance	38,153	36,223
Transactions in Period [Abstract]
Goodwill associated with MoboTap and reclassified from assets held for sale to assets held for use		0
Goodwill impairment recognized for MoboTap		0
Goodwill associated with an acquisition		1,000
Foreign currency translation adjustment	(772)	930
Impairment losses	0
Goodwill, Ending balance	69,627	73,941
Accumulated impairment losses, Ending balance	(32,246)	(35,788)
Goodwill, Net, Ending balance	37,381	38,153
Operating Segments [Member] | Sogou [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	5,908	5,565
Accumulated impairment losses, Beginning Balance	0	0
Goodwill, Net, Beginning Balance	5,908	5,565
Transactions in Period [Abstract]
Goodwill associated with MoboTap and reclassified from assets held for sale to assets held for use		0
Goodwill impairment recognized for MoboTap		0
Goodwill associated with an acquisition		0
Foreign currency translation adjustment	(283)	343
Impairment losses	0
Goodwill, Ending balance	5,625	5,908
Accumulated impairment losses, Ending balance	0	0
Goodwill, Net, Ending balance	5,625	5,908
Operating Segments [Member] | Changyou [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	181,421	96,949
Accumulated impairment losses, Beginning Balance	(153,917)	(70,447)
Goodwill, Net, Beginning Balance	27,504	26,502
Transactions in Period [Abstract]
Goodwill associated with MoboTap and reclassified from assets held for sale to assets held for use		83,470
Goodwill impairment recognized for MoboTap		(83,470)
Goodwill associated with an acquisition		0
Foreign currency translation adjustment	(878)	1,002
Impairment losses	(16,369)
Goodwill, Ending balance	180,543	181,421
Accumulated impairment losses, Ending balance	(170,286)	(153,917)
Goodwill, Net, Ending balance	$ 10,257	$ 27,504

Goodwill (Narrative) (Details)

Goodwill (Narrative) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2018USD ($)ReportingUnits
Goodwill [Line Items]
Goodwill impairment losses			$ 16,369
Sohu [Member]
Goodwill [Line Items]
Number of reporting units | ReportingUnits			1
Sogou [Member]
Goodwill [Line Items]
Number of reporting units | ReportingUnits			1
Changyou [Member] | 17173.com Website [Member]
Goodwill [Line Items]
Goodwill impairment losses	$ 16,400
Changyou [Member] | MoboTap [Member]
Goodwill [Line Items]
Goodwill impairment losses		$ 83,500

Intangible Assets, Net (Finite-

Intangible Assets, Net (Finite-lived Intangible Assets by Major Class) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 283,948	$ 281,825
Accumulated Amortization	(209,513)	(199,813)
Impairment	(50,317)	(58,952)
Net Carrying Amount	24,118	23,060
Purchased Video content [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	177,307	152,135
Accumulated Amortization	(156,198)	(135,177)
Impairment	(18,556)	(11,275)
Net Carrying Amount	2,553	5,683
Operating rights for licensed games [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	46,328	34,296
Accumulated Amortization	(22,299)	(17,882)
Impairment	(11,806)	(10,924)
Net Carrying Amount	12,223	5,490
Domain names and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,536	33,630
Accumulated Amortization	(11,124)	(11,144)
Impairment	(9,823)	(13,279)
Net Carrying Amount	7,589	9,207
Computer software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	15,671	17,413
Accumulated Amortization	(14,022)	(15,401)
Impairment	0	0
Net Carrying Amount	1,649	2,012
Developed technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,902	19,300
Accumulated Amortization	(1,463)	(5,020)
Impairment	(7,439)	(14,089)
Net Carrying Amount	0	191
Others [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,204	25,051
Accumulated Amortization	(4,407)	(15,189)
Impairment	(2,693)	(9,385)
Net Carrying Amount	$ 104	$ 477

Intangible Assets, Net (Narrati

Intangible Assets, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment			$ 22.9
Amortization of intangible assets	$ 59.4	$ 140.7	131.2
Sohu Video's intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment			18.6
Intangible assets impairment losses			2.9
Prepaid and other current assets impairment losses			$ 15.7
Sohu [Member] | Sohu Video's intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Total losses for impairment	10.4	70.6
Intangible assets impairment losses	9.8	43.1
Prepaid and other current assets impairment losses	$ 0.6	27.5
Changyou [Member] | MoboTap's intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets impairment losses		$ 3.4

Intangible Assets, Net (Estimat

Intangible Assets, Net (Estimated Amortization Expenses for Future Periods) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
INTANGIBLE ASSETS, NET [Abstract]
2019	$ 8,452
2020	6,526
2021	3,007
2022	1,101
2023	963
Thereafter	4,069
Total expected amortization expense	$ 24,118	$ 23,060

Taxation (PRC Corporate Income

Taxation (PRC Corporate Income Tax) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	25.00%	35.00%	35.00%
Preferential income tax rate	12.50%
State Administration of Taxation, China [Member]
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	25.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
Preferential income tax rate period (years)	3 years
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu New Momentum [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu Internet [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sohu Media [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Guangzhou Qianjun [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sogou Information [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sogou Technology [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Sogou Network [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Gamease [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | AmazGame [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | High and New Technology Enterprises [Member] | Guanyou Gamespace [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	15.00%
State Administration of Taxation, China [Member] | Software Enterprise [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	12.50%
Preferential income tax rate period (years)	3 years
Income tax exemption period beginning with first profitable year	2 years
Tax rate reduction rate	50.00%
State Administration of Taxation, China [Member] | Software Enterprise [Member] | Sohu New Momentum [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate		12.50%
State Administration of Taxation, China [Member] | Software Enterprise [Member] | Changyou Chuangxiang [Member]
Income Tax and Tax Rate [Line Items]
Income tax exemption period beginning with first profitable year	2 years
State Administration of Taxation, China [Member] | Key National Software Enterprise [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	10.00%
State Administration of Taxation, China [Member] | Key National Software Enterprise [Member] | Sogou Technology [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	10.00%
State Administration of Taxation, China [Member] | Key National Software Enterprise [Member] | AmazGame [Member]
Income Tax and Tax Rate [Line Items]
Preferential income tax rate	10.00%

Taxation (U.S. Corporate Income

Taxation (U.S. Corporate Income Tax) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	25.00%	35.00%	35.00%
Thereafter tax years [Member]
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	21.00%
Prior tax years [Member]
Income Tax and Tax Rate [Line Items]
Statutory income tax rate		35.00%

Taxation (Treatment of Toll Cha

Taxation (Treatment of Toll Charge Related to the U.S. TCJA) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
TAXATION [Abstract]
Provisional amount of income tax expense recognized for the Toll Charge	$ 219
Reduction in liability for deferred income tax	$ 4
Recognition of previously unrecognized tax benefit		$ 77
Unrecognized tax benefit recorded in 2018		142
Interest in connection with unrecognized tax benefit		$ 2

Taxation (Hong Kong Tax) (Detai

Taxation (Hong Kong Tax) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	25.00%	35.00%	35.00%
Inland Revenue, Hong Kong [Member]
Income Tax and Tax Rate [Line Items]
Statutory income tax rate	16.50%	16.50%	16.50%

Taxation (Components of Income

Taxation (Components of Income before Income Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income /(loss) before income tax expense
Income /(loss) from China operations		$ (33,091)	$ (75,893)	$ (88,440)
Income /(loss) from non-China operations		(47,700)	(120,962)	(5,461)
Total income /(loss) before income tax expense		(80,791)	(196,855)	(93,901)
Income tax expense applicable to China operations
Current tax		15,040	57,413	13,635
Deferred tax		49,598	380	8,500
Subtotal income tax expense applicable to China operations		64,638	57,793	22,135
Non China income tax expense/(benefit)		(78,539)	214,737	(2,134)
Non China withholding tax expense		469	618	1,071
Total income tax expense		(13,432)	$ 273,148	$ 21,072
Recognition of previously unrecognized tax benefit		77,000
Unrecognized tax benefit recorded in 2018		142,000
Interest in connection with unrecognized tax benefit		$ 2,000
Provisional amount of income tax expense recognized for the Toll Charge	$ 219,000
Reduction in liability for deferred income tax	$ 4,000

Taxation (Tax Holiday Effect) (

Taxation (Tax Holiday Effect) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
TAXATION [Abstract]
Tax holiday effect	$ 28,385	$ 17,736	$ 30,872
Basic net income per share effect	$ 0.73	$ 0.46	$ 0.80

Taxation (Effective Tax Rate) (

Taxation (Effective Tax Rate) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Apr. 05, 2018
Taxation [Line Items]
Statutory Rate:			25.00%	35.00%	35.00%
Effect of tax holidays applicable to subsidiaries and consolidated VIEs	[1]		35.00%	9.00%	33.00%
Tax differential from statutory rate applicable to the subsidiaries and the consolidated VIEs			4.00%	(11.00%)	(3.00%)
Effect of withholding taxes	[2]		(65.00%)	(2.00%)	(4.00%)
Changes in valuation allowance for deferred tax assets			(69.00%)	(57.00%)	(91.00%)
Others			(4.00%)	(2.00%)	8.00%
Effective Tax Rate			(74.00%)	(28.00%)	(22.00%)
Additional withholding income taxes		$ 47
Special cash dividend						$ 500
Thereafter tax years [Member]
Taxation [Line Items]
Statutory Rate:			21.00%
Prior tax years [Member]
Taxation [Line Items]
Statutory Rate:				35.00%
[1]	The reversal of income tax for preferential income tax rates that Changyou's and Sogou's subsidiaries and VIEs were entitled to as KNSEs or Software Enterprises for 2016, 2017 and 2018 was included in the "Effect of tax holidays applicable to subsidiaries and consolidated VIEs" in the above table.
[2]	The change was mainly due to additional income withholding tax of $47 million that was recognized in the first quarter of 2018 due to a revised policy for Changyou's PRC subsidiaries with respect to their distribution of cash dividends. The revised policy was adopted to facilitate the distribution of a special cash dividend in the aggregate amount of approximately $500.0 million that was declared by Changyou's Board of Directors on April 5, 2018.

Taxation (PRC Withholding Tax o

Taxation (PRC Withholding Tax on Dividends) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Apr. 05, 2018	Dec. 31, 2017
Withholding tax on dividends [Line Items]
Withholding income tax rate on dividends, foreign invested enterprises to foreign holding companies		10.00%
Special cash dividend			$ 500,000
Additional withholding income taxes	$ 47,000
Deferred tax liabilities related to withholding tax		$ 79,824		$ 30,992
Total amount of undistributed profits		2,450,000
Unrecognized tax liabilities		245,100
Changyou [Member]
Withholding tax on dividends [Line Items]
Deferred tax liabilities related to withholding tax		$ 79,800
HONG KONG
Withholding tax on dividends [Line Items]
Preferential withholding tax rate on dividends, foreign invested enterprises		5.00%

Taxation (PRC Value-Added Tax)

Taxation (PRC Value-Added Tax) (Details) - State Administration of Taxation, China [Member]	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Minimum [Member]
Value added tax [Line Items]
Value-added tax rate	6.00%	6.00%	6.00%	6.00%
Maximum [Member]
Value added tax [Line Items]
Value-added tax rate	17.00%	16.00%	17.00%	17.00%

Taxation (Deferred Tax Assets a

Taxation (Deferred Tax Assets and Liabilities, Significant Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss from operations	$ 270,807	$ 245,534
Accrued bonus and commissions	26,704	25,164
Intangible assets transfer	286	538
Others	14,784	10,307
Total deferred tax assets	312,581	281,543
Less: Valuation allowance	(285,225)	(256,347)	$ (216,174)	$ (153,559)
Net deferred tax assets	27,356	25,196
Deferred tax liabilities
Withholding tax for Dividend	(79,824)	(30,992)
Deferred U.S. tax	0	(5,498)
Intangible assets from business acquisitions	(1,087)	(1,247)
Others	(4,353)	(5,655)
Total deferred tax liabilities	$ (85,264)	$ (43,392)

Taxation (Deferred Tax Assets_2

Taxation (Deferred Tax Assets and Liabilities, Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
TAXATION [Abstract]
Net operating losses from PRC entities available to offset against future net profit for income tax purposes	$ 1,240
Deferred tax assets generated from net operating losses offset by valuation allowance	264.5
PRC net operating losses generated from previous years, expired	$ 14.8

Taxation (Movement of Valuation

Taxation (Movement of Valuation Allowance for Net Deferred Tax Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
TAXATION [Abstract]
Beiginning balance	$ 256,347	$ 216,174	$ 153,559
Provision for the year	49,529	66,092	83,078
Reversal for the year	(8,253)	(39,004)	(10,952)
Foreign currency translation adjustment	(12,398)	13,085	(9,511)
Ending balance	$ 285,225	$ 256,347	$ 216,174

Taxation (Uncertain Tax Positio

Taxation (Uncertain Tax Positions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
TAXATION [Abstract]
Beginning balance	$ 31,138	$ 32,682	$ 39,244
Decreases related to prior year tax positions	(1,190)	(1,544)	(6,649)
Increases related to current year tax positions	144,414	0	87
Ending balance	174,363	31,138	$ 32,682
Unrecognized tax benefit recorded in 2018	142,000
Interest in connection with unrecognized tax benefit	$ 2,000
Write off of uncertain tax positions		$ 2,400

Commitments and Contingencies_2

Commitments and Contingencies (Contractual Obligation) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Contractual Obligation [Line Items]
2019	$ 233,261
2020	70,810
2021	34,528
2022	6,966
2023	4,308
Thereafter	0
Total Payments Required	349,873
Purchase of cinema advertisement slot rights [Member]
Contractual Obligation [Line Items]
2019	56,396
2020	40,579
2021	18,064
2022	6,103
2023	4,019
Thereafter	0
Total Payments Required	125,161
Purchase of bandwidth [Member]
Contractual Obligation [Line Items]
2019	82,814
2020	1,143
2021	311
2022	0
2023	0
Thereafter	0
Total Payments Required	84,268
Operating lease obligations [Member]
Contractual Obligation [Line Items]
2019	14,713	[1]
2020	13,897	[1]
2021	6,971	[1]
2022	809	[1]
2023	271	[1]
Thereafter	0	[1]
Total Payments Required	36,661	[1]
Interest payment commitment [Member]
Contractual Obligation [Line Items]
2019	16,754
2020	11,119
2021	7,062
2022	0
2023	0
Thereafter	0
Total Payments Required	34,935
Purchase of content and services - video [Member]
Contractual Obligation [Line Items]
2019	23,746
2020	2,159
2021	2,066
2022	0
2023	0
Thereafter	0
Total Payments Required	27,971
Expenditures for operating rights for licensed games with technological feasibility [Member]
Contractual Obligation [Line Items]
2019	19,475
2020	1,098
2021	0
2022	0
2023	0
Thereafter	0
Total Payments Required	20,573
Expenditures for titles of games in development [Member]
Contractual Obligation [Line Items]
2019	6,990
2020	725
2021	0
2022	0
2023	0
Thereafter	0
Total Payments Required	7,715
Purchase of content and services -others [Member]
Contractual Obligation [Line Items]
2019	6,148
2020	90
2021	54
2022	54
2023	18
Thereafter	0
Total Payments Required	6,364
Fees for operating rights for licensed games in development [Member]
Contractual Obligation [Line Items]
2019	585
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total Payments Required	585
Others [Member]
Contractual Obligation [Line Items]
2019	5,640
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total Payments Required	$ 5,640
[1]	For the years ended December 31, 2018, 2017 and 2016, rental expense included in the operating lease was approximately $24.7 million, $23.9 million, and $23.9 million, respectively.

Commitments and Contingencies_3

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
COMMITMENTS AND CONTINGENCIES [Abstract]
Rental expense included in operating lease	$ 24.7	$ 23.9	$ 23.9
Estimated liabilities as component of accrued and other short-term liabilities	$ 3.4

VIEs (VIEs Consolidated within

VIEs (VIEs Consolidated within Sohu Group, Basic Information for Principal VIEs) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Aggregate amount of loans due from related parties		$ 7.7
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Registered capital and PRC statutory reserves		$ 65.2
High Century [Member] | Dr. Charles Zhang [Member]
Variable Interest Entity [Line Items]
Ownership percentage		80.00%
High Century [Member] | Wei Li [Member]
Variable Interest Entity [Line Items]
Ownership percentage		20.00%
Heng Da Yi Tong [Member] | Dr. Charles Zhang [Member]
Variable Interest Entity [Line Items]
Ownership percentage		80.00%
Heng Da Yi Tong [Member] | Wei Li [Member]
Variable Interest Entity [Line Items]
Ownership percentage		20.00%
Sohu Internet [Member] | High Century [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Donglin [Member] | Sohu Internet [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Tianjin Jinhu [Member] | Ye Deng [Member]
Variable Interest Entity [Line Items]
Transferred equity interest to new shareholders	50.00%
Tianjin Jinhu [Member] | Xiufeng Deng [Member]
Variable Interest Entity [Line Items]
Ownership percentage		50.00%
Tianjin Jinhu [Member] | Xuemei Zhang [Member]
Variable Interest Entity [Line Items]
Ownership percentage		50.00%
Focus Interactive [Member] | Heng Da Yi Tong [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Guangzhou Qianjun [Member] | Tianjin Jinhu [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Sogou Information [Member] | High Century [Member]
Variable Interest Entity [Line Items]
Ownership percentage		45.00%
Sogou Information [Member] | Xiaochuan Wang [Member]
Variable Interest Entity [Line Items]
Ownership percentage		10.00%
Sogou Information [Member] | Tencent Holdings Limited [Member]
Variable Interest Entity [Line Items]
Ownership percentage		45.00%
Chengdu Easypay [Member] | Sogou Information [Member]
Variable Interest Entity [Line Items]
Ownership percentage		9.00%
Chengdu Easypay [Member] | Shi Ji Si Su [Member]
Variable Interest Entity [Line Items]
Ownership percentage		91.00%
Gamease [Member] | High Century [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Shanghai ICE [Member] | Gamease [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%
Guanyou Gamespace [Member] | Changyou Star [Member]
Variable Interest Entity [Line Items]
Ownership percentage		100.00%

VIEs (VIEs Consolidated withi_2

VIEs (VIEs Consolidated within Sohu Group, Financial Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ASSETS:
Cash and cash equivalents	$ 819,713	$ 1,364,096
Restricted cash	5,974	3,928
Account and financing receivables, net	281,173	250,468
Prepaid and other current assets	168,305	192,675
Short-term investments	1,041,395	818,934
Long-term investments, net	108,356	90,145
Fixed assets, net	504,998	529,717
Intangible assets, net	24,118	23,060
Goodwill	53,263	71,565	$ 68,290
Other non-current assets	43,928	40,169
LIABILITIES:
Accounts payable	295,954	288,394
Accrued liabilities	301,915	343,106
Receipts in advance and deferred revenue	124,782	127,758
Long-term tax liabilities	174,339	249,618
Deferred tax liabilities	85,264	43,392
Net revenue	1,883,029	1,860,962	1,650,431
Net income /(loss)	(67,359)	(470,003)	(114,973)
Net cash provided by /(used in) operating activities	84,025	187,687	239,620
Net cash used in investing activities	(459,244)	(714,503)	(411,650)
Net cash provided by /(used in) financing activities	96,334	801,975	(327,934)
VIEs [Member]
ASSETS:
Cash and cash equivalents	65,864	43,618
Restricted cash	697	0
Account and financing receivables, net	122,884	95,305
Prepaid and other current assets	20,554	26,755
Short-term investments	7,305	12,303
Intra-Group receivables due from the Company's subsidiaries	390,157	398,135
Total current assets	607,461	576,116
Long-term investments, net	45,871	32,266
Fixed assets, net	1,793	2,414
Intangible assets, net	18,240	11,719
Goodwill	36,353	37,291
Other non-current assets	1,925	2,614
Total assets	711,643	662,420
LIABILITIES:
Accounts payable	84,749	53,842
Accrued liabilities	60,555	76,883
Receipts in advance and deferred revenue	43,020	46,939
Other current liabilities	86,851	97,991
Intra-Group payables due to the Company's subsidiaries	273,672	197,367
Total current liabilities	548,847	473,022
Long-term tax liabilities	13,554	14,293
Deferred tax liabilities	2,239	3,451
Intra-Group payables due to the Company's subsidiaries	18,897	20,560
Total liabilities	583,537	511,326
Net revenue	923,131	881,284	894,697
Net income /(loss)	(18,436)	34,910	9,557
Net cash provided by /(used in) operating activities	69,925	(52,351)	(17,804)
Net cash used in investing activities	(49,271)	(14,020)	(2,273)
Net cash provided by /(used in) financing activities	$ 650	$ (131)	$ 0

VIEs (VIEs Consolidated withi_3

VIEs (VIEs Consolidated within Sohu Group, Summary of Significant Agreements Currently in Effect) (Details)	12 Months Ended
	Dec. 31, 2018
Shareholders of Sogou Information [Member] | Sogou Technology [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Exclusive technology consulting and service agreement term	10 years
Shareholders of Gamease [Member] | AmazGame [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Percentage of exchange equity interests due to contributions to registered capital of equity	100.00%
Shareholders of Guanyou Gamespace [Member] | Gamespace [Member]
Variable Interest Entity [Line Items]
Power of attorney term	10 years
Percentage of exchange equity interests due to contributions to registered capital of equity	100.00%
Tianjin Jinhu [Member] | Video Tianjin [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	10 years
Tianjin Jinhu [Member] | Shareholders of Tianjin Jinhu [Member] | Video Tianjin [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Power of attorney term	10 years
Sogou Information [Member] | Sogou Technology [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	10 years
Sogou Information [Member] | Shareholders of Sogou Information [Member] | Sogou Technology [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Gamease [Member] | Shareholders of Gamease [Member] | AmazGame [Member]
Variable Interest Entity [Line Items]
Business operation agreement term	10 years
Guanyou Gamespace [Member] | Shareholders of Guanyou Gamespace [Member] | Gamespace [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	10 years
Sohu Internet [Member] | Sohu Era [Member]
Variable Interest Entity [Line Items]
Exclusive technology consulting and service agreement term	2 years

Sohu.com Limited Shareholders_3

Sohu.com Limited Shareholders' Equity (Summary of Sohu.com Limited's Outstanding Shares) (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance, beginning of year	38,898
Balance, end of year	39,229	38,898
Sohu.com Limited [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance, beginning of year	38,898	38,742	38,653
Issuance	331	156	89
Balance, end of year	39,229	38,898	38,742

Sohu.com Limited Shareholders_4

Sohu.com Limited Shareholders' Equity (Sohu's 2018 Share Incentive Plan, Narrative) (Details) - Sohu.com Limited [Member] - Common Stock [Member] - shares	Jul. 02, 2010	Dec. 31, 2018	Apr. 02, 2018
Sohu 2010 Stock Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	1,500,000
Maximum term of share rights granted under share incentive plan	10 years
Sohu 2018 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan expiration date		Apr. 30, 2018
Shares available for grant		649,405
Sohu 2018 Share Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance			1,148,565

Sohu.com Limited Shareholders_5

Sohu.com Limited Shareholders' Equity (Sohu's 2018 Share Incentive Plan, Share Option Activity, Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 01, 2017	Sep. 01, 2017	May 01, 2016	Feb. 01, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,094	$ 41,468	$ 19,120
Sohu.com Limited [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ (1,916)	(814)	1,309
Sohu.com Limited [Member] | Sohu 2010 Stock Incentive Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted in period		147,000
Sohu.com Limited [Member] | Sohu 2010 Stock Incentive Plan [Member] | Stock Options [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options					6,000	32,000	13,000	1,068,000
Exercise prices of option granted					$ 0.001	$ 0.001	$ 0.001	$ 0.001
Number of options granted in period		578,500
Number of share options vested		578,500
Total fair value of stock options granted		$ 22,800
Share-based compensation expense		5,100	2,400	1,400
Total fair values of share options vested		5,000	7,100	10,800
Total intrinsic value of share options exercised		$ 6,200	$ 6,100	$ 2,500
Sohu.com Limited [Member] | Sohu 2018 Share Incentive Plan [Member] | Stock Options [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Four equal installments
Award vesting period	4 years

Sohu.com Limited Shareholders_6

Sohu.com Limited Shareholders' Equity (Sohu's 2018 Share Incentive Plan, Share Option Activity) (Details) - Sohu.com Limited [Member] - Sohu 2018 Share Incentive Plan [Member] - Share Options [Member] $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance | shares	223
Number of Shares, Granted | shares	147
Number of Shares, Exercised | shares	(328)
Number of Shares, Forfeited or expired | shares	0
Number of Shares, Outstanding, Ending balance | shares	42
Number of Shares, Vested, Ending balance | shares	42
Number of Shares, Exercisable, Ending balance | shares	42
Weighted Average Exercise Price, Outstanding, Beginning balance | $ / shares	$ 0.001
Weighted Average Exercise Price, Granted | $ / shares	0.001
Weighted Average Exercise Price, Exercised | $ / shares	0.001
Weighted Average Exercise Price, Outstanding, Ending balance | $ / shares	0.001
Weighted Average Exercise Price, Vested, Ending balance | $ / shares	0.001
Weighted Average Exercise Price, Exercisable, Ending balance | $ / shares	$ 0.001
Weighted Average Remaining Contractual Life (Years), Outstanding, Ending balance	6 years 6 months 22 days
Weighted Average Remaining Contractual Life (Years), Vested, Ending balance	6 years 6 months 22 days
Weighted Average Remaining Contractual Life (Years), Exercisable, Ending balance	6 years 6 months 22 days
Aggregate Intrinsic Value, Outstanding, Ending balance | $	$ 736	[1]
Aggregate Intrinsic Value, Vested, Ending balance | $	736	[1]
Aggregate Intrinsic Value, Exercisable, Ending balance | $	$ 736	[1]
ADS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price | $ / shares	$ 17.42
[1]	The aggregated intrinsic value in the preceding table represents the difference between Sohu's closing ADS price of $17.42 on December 31, 2018 and the nominal exercise price of the options.

Sohu.com Limited Shareholders_7

Sohu.com Limited Shareholders' Equity (Sohu's 2018 Share Incentive Plan, Restricted Share Unit Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 2,094	$ 41,468	$ 19,120
Sohu.com Limited [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ (1,916)	$ (814)	1,309
Sohu.com Limited [Member] | Sohu 2018 Share Incentive Plan [Member] | Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Units, Unvested, Beginning balance	1
Number of Units, Granted	0
Number of Units, Vested	(1)
Number of Units, Forfeited	0
Number of Units, Unvested, Ending balance	0	1
Number of Units, Expected to vest thereafter	0
Weighted-Average Grant-Date Fair Value, Unvested, Beginning balance	$ 72.92
Weighted-Average Grant-Date Fair Value, Vested	72.92
Weighted-Average Grant-Date Fair Value, Unvested, Ending balance	$ 72.92	$ 72.92
Share-based compensation expense	$ 0	$ (1,700)	1,300
Unrecognized compensation expenses	0
Fair value of restricted stock units vested	$ 0	$ 300	$ 900

Sohu.com Limited Shareholders_8

Sohu.com Limited Shareholders' Equity (Sogou 2010 Share Incentive Plan, Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 22, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 2,094	$ 41,468	$ 19,120
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	12,500	23,000	7,600
Unrecognized compensation expenses	$ 6,400
Unrecognized compensation expenses, weighted average period for recognition (in years)	1 year 5 months 16 days
Total intrinsic value of share options exercised	$ 33,200	$ 11,100	$ 15,200
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Performance-based options [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Four equal installments
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Performance-based options [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Two or four equal installments
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Service-based options [Member] | Share-based Compensation Award, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Four equal installments
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Service-based options [Member] | Share-based Compensation Award, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Two or four equal installments
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | IPO-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted	Five equal installments
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance				41,500,000
Plan expiration date	Oct. 19, 2020
Sogou [Member] | Sogou 2010 Share Incentive Plan [Member] | Class A Ordinary Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of share rights granted under share incentive plan	10 years

Sohu.com Limited Shareholders_9

Sohu.com Limited Shareholders' Equity (Sogou 2010 Share Incentive Plan, Summary of Categories of Share Options) (Details) - Sogou [Member] - Sogou 2010 Share Incentive Plan [Member] shares in Thousands	Dec. 31, 2018shares
Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	38,611
Number of shares under granted share options for purposes of share-based compensation expense	36,123
Number of shares under vested and exercisable share options	30,476
Number of shares under exercised share options	29,678
Performance-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	29,687
Number of shares under granted share options for purposes of share-based compensation expense	27,199
Number of shares under vested and exercisable share options	27,060
Number of shares under exercised share options	26,592
Service-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	1,674
Number of shares under granted share options for purposes of share-based compensation expense	1,674
Number of shares under vested and exercisable share options	486
Number of shares under exercised share options	156
IPO-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	7,250
Number of shares under granted share options for purposes of share-based compensation expense	7,250
Number of shares under vested and exercisable share options	2,930
Number of shares under exercised share options	2,930

Sohu.com Limited Shareholder_10

Sohu.com Limited Shareholders' Equity (Sogou 2010 Share Incentive Plan, Share Option Activity) (Details) - Sogou [Member] - Sogou 2010 Share Incentive Plan [Member] - Share Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance		9,753
Number of Shares, Granted		1,704
Number of Shares, Exercised		(4,515)
Number of Shares, Forfeited or expired		(497)
Number of Shares, Outstanding, Ending balance		6,445	9,753
Number of Shares, Vested and expected to vest thereafter, Ending balance		6,059
Number of Shares, Exercisable, Ending balance		798
Weighted Average Exercise Price, Outstanding, Beginning balance		$ 0.462
Weighted Average Exercise Price, Granted		0.001
Weighted Average Exercise Price, Exercised		0.399
Weighted Average Exercise Price, Forfeited or expired		0.001
Weighted Average Exercise Price, Outstanding, Ending balance		0.419	$ 0.462
Weighted Average Exercise Price, Vested and expected to vest thereafter, Ending balance		0.446
Weighted Average Exercise Price, Exercisable, Ending balance		$ 0.001
Weighted Average Remaining Contractual Life (Years), Outstanding, Beginning balance		5 years 3 months 14 days	5 years 6 months 22 days
Weighted Average Remaining Contractual Life (Years), Outstanding, Ending balance		5 years 3 months 14 days	5 years 6 months 22 days
Weighted Average Remaining Contractual Life (Years), Vested and expected to vest thereafter, Ending balance		5 years 1 month 6 days
Weighted Average Remaining Contractual Life (Years), Exercisable, Ending balance		7 years 1 month 24 days
Aggregate Intrinsic Value, Outstanding, Ending balance	[1]	$ 31,137
Aggregate Intrinsic Value, Vested and expected to vest thereafter, Ending balance	[1]	29,109
Aggregate Intrinsic Value, Exercisable, Ending balance	[1]	$ 4,188
Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price		$ 5.25
[1]	The aggregate intrinsic value in the preceding table represents the difference between Sogou's closing price of $5.25 per Class A Ordinary Share on December 31, 2018 and the exercise price of the options.

Sohu.com Limited Shareholder_11

Sohu.com Limited Shareholders' Equity (Sogou 2010 Share Incentive Plan, Share Option Assumptions) (Details) - Sogou [Member] - Sogou 2010 Share Incentive Plan [Member] - Share Options [Member]	12 Months Ended
	Dec. 31, 2018$ / shares	Dec. 31, 2017$ / shares	Dec. 31, 2016$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple	2
Expected forfeiture rate (post-vesting)	12.00%
Weighted average expected option life	9 years	7 years	7 years
Dividend yield	0.00%	0.00%	0.00%
Weighted average fair value of share options	$ 12.26	$ 10.35	$ 3.26
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.36%	2.14%	1.90%
Exercise multiple		2	2
Expected forfeiture rate (post-vesting)		0.00%	0.00%
Volatility rate	40.00%	39.00%	43.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.51%	3.00%	2.77%
Exercise multiple		3	3
Expected forfeiture rate (post-vesting)		12.00%	12.00%
Volatility rate	46.00%	47.00%	50.00%

Sohu.com Limited Shareholder_12

Sohu.com Limited Shareholders' Equity (Sogou 2010 Share Incentive Plan, Share Option Assumptions, Narrative) (Details) - Sogou [Member] - Sogou 2010 Share Incentive Plan [Member] - Share Options [Member]	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple	2
Estimated forfeiture rate	12.00%
Estimated dividend yield	0.00%	0.00%	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple		2	2
Estimated forfeiture rate		0.00%	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple		3	3
Estimated forfeiture rate		12.00%	12.00%
Management [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated forfeiture rate	0.00%
Management [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated forfeiture rate	1.00%
Key employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated forfeiture rate	12.00%

Sohu.com Limited Shareholder_13

Sohu.com Limited Shareholders' Equity (Sogou Inc. Share-based Awards, Sogou 2017 Share Incentive Plan, Narrative) (Details) - USD ($)	Oct. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,094,000	$ 41,468,000	$ 19,120,000
Sogou [Member] | Sogou 2017 Share Incentive Plan [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		1,600,000
Unrecognized compensation expenses		$ 4,000,000
Unrecognized compensation expenses, weighted average period for recognition (in years)		2 years 1 month 13 days
Sogou [Member] | Sogou 2017 Share Incentive Plan [Member] | Performance-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted		Four equal installments
Sogou [Member] | Sogou 2017 Share Incentive Plan [Member] | Service-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Installments of share options granted		Four equal installments
Sogou [Member] | Sogou 2017 Share Incentive Plan [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares for issuance	28,000,000
Sogou [Member] | Sogou 2017 Share Incentive Plan [Member] | Class A Ordinary Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of share incentive award granted under share incentive plan	10 years

Sohu.com Limited Shareholder_14

Sohu.com Limited Shareholders' Equity (Sogou Inc. Share-based Awards, Sogou 2017 Share Incentive Plan, Summary of Categories of Share Options) (Details) - Sogou [Member] - Sogou 2017 Share Incentive Plan [Member] shares in Thousands	Dec. 31, 2018shares
Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	800
Number of shares under granted share options for purposes of share-based compensation expense	730
Number of shares under vested and exercisable share options	0
Number of shares under exercised share options	0
Performance-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	70
Number of shares under granted share options for purposes of share-based compensation expense	0
Number of shares under vested and exercisable share options	0
Number of shares under exercised share options	0
Service-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	730
Number of shares under granted share options for purposes of share-based compensation expense	730
Number of shares under vested and exercisable share options	0
Number of shares under exercised share options	0

Sohu.com Limited Shareholder_15

Sohu.com Limited Shareholders' Equity (Sogou Inc. Share-based Awards, Sogou 2017 Share Incentive Plan, Share Option Activity) (Details) - Sogou [Member] - Sogou 2017 Share Incentive Plan [Member] $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance	0
Number of Shares, Granted	767
Number of Shares, Exercised	0
Number of Shares, Forfeited or expired	(37)
Number of Shares, Outstanding, Ending balance	730
Number of Shares, Vested and expected to vest thereafter, Ending balance	544
Number of Shares, Exercisable, Ending balance	0
Weighted Average Exercise Price, Granted | $ / shares	$ 0.001
Weighted Average Exercise Price, Forfeited or expired | $ / shares	0.001
Weighted Average Exercise Price, Outstanding, Ending balance | $ / shares	0.001
Weighted Average Exercise Price, Vested and expected to vest thereafter, Ending balance | $ / shares	$ 0.001
Weighted Average Remaining Contractual Life (Years), Outstanding, Ending balance	9 years 6 months 25 days
Weighted Average Remaining Contractual Life (Years), Vested and expected to vest thereafter, Ending balance	9 years 6 months 25 days
Aggregate Intrinsic Value, Outstanding, Ending balance | $	$ 3,829	[1]
Aggregate Intrinsic Value, Vested and expected to vest thereafter, Ending balance | $	$ 2,857	[1]
Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price | $ / shares	$ 5.25
[1]	The aggregate intrinsic value in the preceding table represents the difference between Sogou's closing price of $5.25 per Class A Ordinary Share on December 31, 2018 and the exercise price of the options.

Sohu.com Limited Shareholder_16

Sohu.com Limited Shareholders' Equity (Sogou Inc. Share-based Awards, Sogou 2017 Share Incentive Plan, Share Option Assumptions) (Details) - Sogou [Member] - Sogou 2017 Share Incentive Plan [Member] - Share Options [Member]	12 Months Ended
	Dec. 31, 2018$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise multiple	2
Expected forfeiture rate (post-vesting)	12.00%
Weighted average expected option life	10 years
Dividend yield	0.00%
Weighted average fair value of share options	$ 10.09
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.41%
Volatility rate	40.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.95%
Volatility rate	46.00%

Sohu.com Limited Shareholder_17

Sohu.com Limited Shareholders' Equity (Sohu Management Sogou Share Option Arrangement, Narrative) (Details) - USD ($)	Apr. 14, 2011	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 01, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,094,000	$ 41,468,000	$ 19,120,000
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options		8,305,000
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Performance-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options		8,290,000
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sogou's ordinary shares previously held by Sohu					8,800,000
Sogou's newly-issued shares	3,200,000
Sogou's newly-issued shares, price per share	$ 0.625
Sogou's newly-issued shares, value	$ 2,000,000
Number of shares under contractually granted share options		8,305,000
Installments of share options granted		Four equal installments
Share-based compensation expense		$ 0	0	400,000
Unrecognized compensation expenses		0
Total fair values of share options vested		0	0	500,000
Total intrinsic value of share options exercised		$ 0	$ 200,000	$ 4,500,000
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Class A Ordinary Shares [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fixed exercise price of ordinary share					$ 0.001
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Class A Ordinary Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fixed exercise price of ordinary share					$ 0.625
Sogou [Member] | Sohu Management Sogou Share Option Arrangement [Member] | Class A Ordinary Shares [Member] | Maximum [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance		12,000,000

Sohu.com Limited Shareholder_18

Sohu.com Limited Shareholders' Equity (Sohu Management Sogou Share Option Arrangement, Summary of Categories of Share Options) (Details) - Sogou [Member] - Sohu Management Sogou Share Option Arrangement [Member] shares in Thousands	Dec. 31, 2018shares
Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	8,305
Number of shares under granted share options for purposes of share-based compensation expense	8,305
Number of shares under vested and exercisable share options	8,305
Number of shares under exercised share options	8,296
Performance-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	8,290
Number of shares under granted share options for purposes of share-based compensation expense	8,290
Number of shares under vested and exercisable share options	8,290
Number of shares under exercised share options	8,290
Service-based options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	15
Number of shares under granted share options for purposes of share-based compensation expense	15
Number of shares under vested and exercisable share options	15
Number of shares under exercised share options	6

Sohu.com Limited Shareholder_19

Sohu.com Limited Shareholders' Equity (Sohu Management Sogou Share Option Arrangement, Share Option Activity) (Details) - Sogou [Member] - Sohu Management Sogou Share Option Arrangement [Member] - Share Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance		9
Number of Shares, Granted		0
Number of Shares, Exercised		0
Number of Shares, Forfeited or expired		0
Number of Shares, Outstanding, Ending balance		9	9
Number of Shares, Vested, Ending balance		9
Number of Shares, Exercisable, Ending balance		9
Weighted Average Exercise Price, Outstanding, Beginning balance		$ 0.001
Weighted Average Exercise Price, Outstanding, Ending balance		0.001	$ 0.001
Weighted Average Exercise Price, Vested, Ending balance		0.001
Weighted Average Exercise Price, Exercisable, Ending balance		$ 0.001
Weighted Average Remaining Contractual Life (Years), Outstanding, Beginning balance		6 years 4 months 17 days	6 years 4 months 17 days
Weighted Average Remaining Contractual Life (Years), Outstanding, Ending balance		6 years 4 months 17 days	6 years 4 months 17 days
Weighted Average Remaining Contractual Life (Years), Vested, Ending balance		6 years 4 months 17 days
Weighted Average Remaining Contractual Life (Years), Exercisable, Ending balance		6 years 4 months 17 days
Aggregate Intrinsic Value, Outstanding, Ending balance	[1]	$ 47
Aggregate Intrinsic Value, Vested, Ending balance	[1]	47
Aggregate Intrinsic Value, Exercisable, Ending balance	[1]	$ 47
Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price		$ 5.25
[1]	The aggregate intrinsic value in the preceding table represents the difference between Sogou's closing price of $5.25 per Class A Ordinary Share on December 31, 2018 and the exercise price of the options.

Sohu.com Limited Shareholder_20

Sohu.com Limited Shareholders' Equity (Sohu Management Sogou Share Option Arrangement, Share Option Assumptions) (Details) - Sogou [Member] - Sohu Management Sogou Share Option Arrangement [Member] - Share Options [Member]	12 Months Ended
	Dec. 31, 2016$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected forfeiture rate (post-vesting)	0.00%
Weighted average expected option life	6 years
Dividend yield	0.00%
Weighted average fair value of share options	$ 3.02
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	2.01%
Exercise multiple	2
Volatility rate	43.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	2.15%
Exercise multiple	3
Volatility rate	47.00%

Sohu.com Limited Shareholder_21

Sohu.com Limited Shareholders' Equity (Sogou Inc. Share-based Awards, Option Modification) (Details) - Sogou [Member] - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018
Sogou 2010 Share Incentive Plan [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	38,611,000
Number of Class A ordinary shares deemed granted under share options	36,123,000
Sogou 2010 Share Incentive Plan [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental fair value	$ 0
Sogou 2010 Share Incentive Plan [Member] | Class A Ordinary Shares [Member] | Early Exercise of Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remained unvested Class A ordinary shares	6,405,000
Sogou 2010 Share Incentive Plan [Member] | Class A Ordinary Shares [Member] | Share Options [Member] | Vesting Condition Change of Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options		2,181,192
Number of Class A ordinary shares not deemed granted under share options		1,601,427
Number of Class A ordinary shares deemed granted under share options		579,765
Sohu Management Sogou Share Option Arrangement [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental fair value	$ 0
Number of shares under contractually granted share options	8,305,000
Number of Class A ordinary shares deemed granted under share options	8,305,000
Sohu Management Sogou Share Option Arrangement [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options	8,305,000

Sohu.com Limited Shareholder_22

Sohu.com Limited Shareholders' Equity (Sohu Management Sogou Share Option Arrangement, Share Repurchase Transaction) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,094	$ 41,468	$ 19,120
Sogou [Member] | Pre-IPO [Member] | Former President and CFO of Sohu Group [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate repurchased shares	720,000
Aggregate price of repurchased shares	$ 7,200
Share-based compensation expense	$ 4,000

Sohu.com Limited Shareholder_23

Sohu.com Limited Shareholders' Equity (Tencent Share-based Awards Granted to Employees Who Transferred to Sogou with Soso Search-related Businesses) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 2,094,000	$ 41,468,000	$ 19,120,000
Sogou [Member] | Tencent Holdings Limited [Member] | Tencent Share-based Awards Related to Soso [Member] | Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	100,000	700,000	800,000
Sogou [Member] | Employees of Sogou [Member] | Tencent Share-based Awards Related to Soso [Member] | Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 100,000	$ 700,000	$ 800,000
Unvested Tencent restricted share units held by employees of Sogou	0
Unrecognized compensation expenses	$ 0

Sohu.com Limited Shareholder_24

Sohu.com Limited Shareholders' Equity (Changyou 2008 Share Incentive Plan) (Details)	1 Months Ended	12 Months Ended
	Mar. 31, 2009	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Mar. 01, 2009shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense | $		$ 2,094,000	$ 41,468,000	$ 19,120,000
Changyou [Member] | Changyou 2008 Share Incentive Plan [Member] | Ordinary Shares [Member] | Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance | shares					2,000,000
Shares reserved for future issuance as result of stock split | shares					2,000,000
Stock split, conversion ratio	10
Award vesting period		4 years
Plan expiration date		Aug. 31, 2018
Share-based compensation expense | $		$ 0
Changyou [Member] | Changyou 2008 Share Incentive Plan [Member] | Ordinary Shares [Member] | Ordinary Shares [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of share rights granted under share incentive plan		10 years

Sohu.com Limited Shareholder_25

Sohu.com Limited Shareholders' Equity (Changyou 2014 Share Incentive Plan, Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jul. 28, 2016	Jun. 01, 2015	Feb. 16, 2015	Nov. 02, 2014	Jun. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 2,094	$ 41,468	$ 19,120
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of stock options granted	35,400
Share-based compensation expense	(6,500)	17,400	8,300
Total fair values of share options vested	5,700	14,800	9,100
Total intrinsic value of share options exercised	$ 14,900	$ 10,300	$ 4,300
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of share rights granted under share incentive plan	10 years
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member] | Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance							6,000,000	2,000,000
Plan expiration date	Jun. 30, 2024
Shares available for grant	3,023,000
Exercise prices of option granted				$ 0.01	$ 0.01
Changyou [Member] | Changyou 2014 Share Incentive Plan [Member] | Class A restricted share units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options							2,416,000
Number of Class A restricted share units converted to options						24,000,000
Exercise prices of option granted						$ 0.01

Sohu.com Limited Shareholder_26

Sohu.com Limited Shareholders' Equity (Changyou 2014 Share Incentive Plan, Share Option Activity) (Details) - Changyou [Member] - Changyou 2014 Share Incentive Plan [Member] - Share Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning balance		947
Number of Shares, Granted		719
Number of Shares, Exercised		(1,065)
Number of Shares, Forfeited or expired		0
Number of Shares, Outstanding, Ending balance		601	947
Number of Shares, Vested, Ending balance		601
Number of Shares, Exercisable, Ending balance		601
Weighted Average Exercise Price, Outstanding, Beginning balance		$ 0.01
Weighted Average Exercise Price, Granted		0.01
Weighted Average Exercise Price, Exercised		0.01
Weighted Average Exercise Price, Outstanding, Ending balance		0.01	$ 0.01
Weighted Average Exercise Price, Vested, Ending balance		0.01
Weighted Average Exercise Price, Exercisable, Ending balance		$ 0.01
Weighted Average Remaining Contractual Life (Years), Outstanding, Beginning balance		5 years 11 months 23 days	7 years 4 days
Weighted Average Remaining Contractual Life (Years), Outstanding, Ending balance		5 years 11 months 23 days	7 years 4 days
Aggregate Intrinsic Value, Outstanding, Beginning balance	[1]	$ 17,240
Aggregate Intrinsic Value, Outstanding, Ending balance	[1]	5,487	$ 17,240
Aggregate Intrinsic Value, Vested, Ending balance	[1]	$ 5,487
Class A Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price		$ 9.14
ADS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing price		$ 18.28
[1]	The aggregate intrinsic value in the preceding table represents the difference between Changyou's closing price of $18.28 per ADS, or $9.14 per Class A ordinary share, on December 31, 2018 and the nominal exercise price of the share option.

Sohu.com Limited Shareholder_27

Sohu.com Limited Shareholders' Equity (Sohu Video Share-based Awards, Narrative) (Details) - USD ($) $ in Thousands	Jan. 04, 2012	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 2,094	$ 41,468	$ 19,120
Sohu Video [Member] | Video 2011 Share Incentive Plan [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan expiration date		Jan. 3, 2022
Sohu Video [Member] | Video 2011 Share Incentive Plan [Member] | Ordinary Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance	25,000,000
Sohu Video [Member] | Video 2011 Share Incentive Plan [Member] | Ordinary Shares [Member] | Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares under contractually granted share options		16,368,200
Installments of share options granted		Four equal installments
Number of shares purchased on vested options		4,972,800
Share-based compensation expense		$ (500)	$ (300)	$ 800
Sohu Video [Member] | Video 2011 Share Incentive Plan [Member] | Ordinary Shares [Member] | Share Options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum term of share rights granted under share incentive plan	10 years

Sohu.com Limited Shareholder_28

Sohu.com Limited Shareholders' Equity (Sohu Video Share-based Awards, Share Option Assumptions) (Details) - Sohu Video [Member] - Video 2011 Share Incentive Plan [Member] - Share Options [Member]	12 Months Ended
	Dec. 31, 2018$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average risk-free interest rate	3.19%
Exercise multiple	2.8
Expected forfeiture rate (post-vesting)	14.00%
Weighted average expected option life	3 years
Volatility rate	45.10%
Dividend yield	0.00%
Fair value	$ 0.53

Noncontrolling Interest (Narrat

Noncontrolling Interest (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	$ 964,111	$ 1,066,603
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	92,723	84,523	$ 109,048
Sogou [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	$ 686,503	$ 623,785
Percentage of noncontrolling interest recognized in consolidated balance sheets	67.00%	66.00%
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	$ 65,586	$ 77,025	61,403
Changyou [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	$ 277,608	$ 442,818
Percentage of noncontrolling interest recognized in consolidated balance sheets	33.00%	32.00%
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	$ 27,137	$ 7,603	$ 47,645
Percentage of net income /(loss) attributable to noncontrolling interest recognized in consolidated statements of comprehensive income	33.00%	32.00%	31.00%

Noncontrolling Interest (Noncon

Noncontrolling Interest (Noncontrolling Interest in Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	$ 964,111	$ 1,066,603
Sogou [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	686,503	623,785
Changyou [Member]
Noncontrolling Interest [Line Items]
Noncontrolling interest in consolidated balance sheets	$ 277,608	$ 442,818

Noncontrolling Interest (Nonc_2

Noncontrolling Interest (Noncontrolling Interest in Consolidated Statements of Comprehensive Income /(Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	$ 92,723	$ 84,523	$ 109,048
Sogou [Member]
Noncontrolling Interest [Line Items]
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	65,586	77,025	61,403
Changyou [Member]
Noncontrolling Interest [Line Items]
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	27,137	7,603	47,645
Other [Member]
Noncontrolling Interest [Line Items]
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income	$ 0	$ (105)	$ 0

Net Income _(Loss) per Share (N

Net Income /(Loss) per Share (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Potential ordinary shares issuable upon exercise or settlement of share-based awards [Member] | Ordinary Shares [Member]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Line Items]
Anti-dilutive potential common shares	292,622	263,497	232,488

Net Income _(Loss) per Share (C

Net Income /(Loss) per Share (Calculation of Sohu Group's Basic and Diluted Net Loss per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Numerator:
Net loss attributable to Sohu.com Limited, basic	$ (160,082)	$ (554,526)	$ (224,021)
Effect of dilutive securities:
Net loss attributable to Sohu.com Limited, diluted	$ (160,960)	$ (555,790)	$ (225,660)
Denominator:
Weighted average basic ordinary shares outstanding	38,959	38,858	38,706
Effect of dilutive securities:
Share options and restricted share units	0	0	0
Weighted average diluted ordinary shares outstanding	38,959	38,858	38,706
Basic net loss per share attributable to Sohu.com Limited	$ (4.11)	$ (14.27)	$ (5.79)
Diluted net loss per share attributable to Sohu.com Limited	$ (4.13)	$ (14.30)	$ (5.83)
Sogou [Member]
Effect of dilutive securities:
Incremental dilution	$ (496)	$ (1,233)	$ 0
Changyou [Member]
Effect of dilutive securities:
Incremental dilution	$ (382)	$ (31)	$ (1,639)

China Contribution Plan (Detail

China Contribution Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
China Government Mandated Multiemployer Defined Contribution Plan [Member]
Multiemployer Plans [Line Items]
Annual Contributions	$ 152.3	$ 139.2	$ 131.6

Profit Appropriation (Details)

Profit Appropriation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Profit Appropriation [Line Items]
Total amount of profits contributed to funds	$ 7.3	$ 12	$ 4.3
Total balance of profits contributed to funds	$ 70.3	$ 63
China Foreign Investment Enterprises Law [Member] | Minimum [Member]
Profit Appropriation [Line Items]
Required percentage of after-tax-profit under PRC GAAP to be set aside as a general reserve fund	10.00%
Required registered capital ratio to de-force compulsory net profit allocation to general reserve fund	50.00%
China Company Law [Member] | Minimum [Member]
Profit Appropriation [Line Items]
Required percentage of after-tax-profit under PRC GAAP to be set aside as statutory surplus fund	10.00%
Required registered capital ratio to de-force compulsory net profit allocation to statutory surplus fund	50.00%

Concentration Risks (Details)

Concentration Risks (Details)	12 Months Ended
	Dec. 31, 2018USD ($)Institutions	Dec. 31, 2017USD ($)Institutions	Dec. 31, 2016USD ($)
Concentration Risk [Line Items]
Revenues	$ 1,883,029,000	$ 1,860,962,000	$ 1,650,431,000
TLBB [Member]
Concentration Risk [Line Items]
Revenues	200,900,000
Legacy TLBB Mobile [Member]
Concentration Risk [Line Items]
Revenues	102,600,000
Customer Risk [Member] | Total Revenue [Member]
Concentration Risk [Line Items]
Revenues from customers that individually represent greater than 10% of total advertising revenues	$ 0	$ 0	$ 0
Product Risk [Member] | Total Revenue [Member] | TLBB [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	11.00%
Product Risk [Member] | Total Revenue [Member] | Legacy TLBB Mobile [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	5.00%
Product Risk [Member] | Total Revenue [Member] | Changyou [Member] | TLBB [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	41.00%
Product Risk [Member] | Total Revenue [Member] | Changyou [Member] | Legacy TLBB Mobile [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	21.00%
Product Risk [Member] | Online Game Revenue [Member] | Changyou [Member] | TLBB [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	52.00%
Product Risk [Member] | Online Game Revenue [Member] | Changyou [Member] | Legacy TLBB Mobile [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	26.00%
Credit risk [Member] | Cash and cash equivalents and short-term investments [Member]
Concentration Risk [Line Items]
Percentage of concentration risk	60.00%	58.00%
Number of financial institutions cash and cash equivalents concentrated held in | Institutions	17	19
Maximum percentage of Sohu's cash and bank deposits in any single financial institution	35.00%	30.00%

Restricted Net Assets (Details)

Restricted Net Assets (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
RESTRICTED NET ASSETS [Abstract]
Portion of net after-tax income to be allocated to statutory surplus reserve fund	10.00%
Percentage rate of registered capital, reserve funds reached, appropriation not required	50.00%
Restricted net assets, amount	$ 588.4

Additional Information - Cond_3

Additional Information - Condensed Financial Information of Sohu.com Inc. (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
ADDITIONAL INFORMATION - CONDENSED FINANCIAL INFORMATION OF REGISTRANT [Abstract]
Material contingencies	No	No
Significant provisions of long-term obligations	No	No
Guarantees	No	No

Additional Information - Cond_4

Additional Information - Condensed Financial Statements (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 819,713	$ 1,364,096
Prepaid and other current assets	168,305	192,675
Total current assets	2,316,560	2,630,101
Other assets	43,928	40,169
Total assets	3,298,509	3,389,239
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities	1,182,880	1,155,402
Long-term liabilities	562,678	416,600
Total liabilities	1,745,558	1,572,002
Shareholders' equity:
Ordinary Shares: $0.001 par value per share (75,400 shares authorized; 38,898 shares and 39,229 shares, respectively, issued and outstanding as of December 31, 2017 and 2018)	39	45
Additional paid-in capital	958,883	1,098,455
Treasury stock (5,890 shares and nil, respectively, as of December 31, 2017 and 2018)	0	(143,858)
Accumulated other comprehensive income	24,719	38,212
Accumulated deficit	(394,801)	(242,220)
Total shareholders' equity	588,840	750,634
Total liabilities and shareholders' equity	3,298,509	3,389,239
Sohu.com Limited [Member]
ASSETS
Cash and cash equivalents	16,492	2,845	$ 8,990
Prepaid and other current assets	1,169	2,285
Due from subsidiaries and VIEs	470,649	3,806
Total current assets	488,310	8,936
Interests in subsidiaries and VIEs	224,679	971,163
Other assets	27,736	0
Total assets	740,725	980,099
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities	7,471	5,482
Long-term liabilities	144,414	223,983
Total liabilities	151,885	229,465
Shareholders' equity:
Ordinary Shares: $0.001 par value per share (75,400 shares authorized; 38,898 shares and 39,229 shares, respectively, issued and outstanding as of December 31, 2017 and 2018)	39	45
Additional paid-in capital	958,883	1,098,455
Treasury stock (5,890 shares and nil, respectively, as of December 31, 2017 and 2018)	0	(143,858)
Accumulated other comprehensive income	24,719	38,212
Accumulated deficit	(394,801)	(242,220)
Total shareholders' equity	588,840	750,634
Total liabilities and shareholders' equity	$ 740,725	$ 980,099

Additional Information - Cond_5

Additional Information - Condensed Financial Statements (Condensed Balance Sheets) (Parenthetical) (Details) - $ / shares shares in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,400	75,400
Ordinary Share, shares issued (in shares)	39,229	38,898
Ordinary Share, shares outstanding (in shares)	39,229	38,898
Treasury stock, shares (in shares)	0	5,890
Sohu.com Limited [Member]
Condensed Balance Sheet Statements, Captions [Line Items]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,400	75,400
Ordinary Share, shares issued (in shares)	39,229	38,898
Ordinary Share, shares outstanding (in shares)	39,229	38,898	38,742	38,653
Treasury stock, shares (in shares)	0	5,890

Additional Information - Cond_6

Additional Information - Condensed Financial Statements (Condensed Statements of Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Statement of Income Captions [Line Items]
Revenues	$ 1,883,029	$ 1,860,962	$ 1,650,431
Cost of revenues	1,071,721	1,035,166	859,800
Gross profit	811,308	825,796	790,631
Operating expenses:
General and administrative	113,724	122,874	119,841
Operating loss	(160,525)	(209,178)	(117,134)
Other income /(expense)	64,167	6,658	(10,713)
Income /(loss) before income tax benefit /(expense)	(80,791)	(196,855)	(93,901)
Income tax expense /(benefit)	(13,432)	273,148	21,072
Net loss	(160,082)	(554,526)	(224,021)
Other comprehensive income /(loss)	(37,339)	68,429	(77,155)
Comprehensive loss	(166,074)	(519,534)	(270,952)
Sohu.com Limited [Member]
Condensed Statement of Income Captions [Line Items]
Revenues	0	0	0
Cost of revenues	0	0	0
Gross profit	0	0	0
Operating expenses:
General and administrative	12,206	8,824	8,845
Operating loss	(12,206)	(8,824)	(8,845)
Share of loss of subsidiaries and VIEs	(232,307)	(331,106)	(217,408)
Other income /(expense)	22	71	(54)
Interest income	5,865	152	107
Income /(loss) before income tax benefit /(expense)	(238,626)	(339,707)	(226,200)
Income tax expense /(benefit)	(78,544)	214,819	(2,179)
Net loss	(160,082)	(554,526)	(224,021)
Other comprehensive income /(loss)	(13,494)	34,992	(46,931)
Comprehensive loss	$ (173,576)	$ (519,534)	$ (270,952)

Additional Information - Cond_7

Additional Information - Condensed Financial Statements (Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net loss	$ (67,359)	$ (470,003)	$ (114,973)
Adjustments to reconcile net loss to net cash provided by operating activities:
Share-based compensation expense /(benefit)	2,094	41,468	19,120
Changes in current assets and liabilities:
Prepaid and other current assets	23,865	(23,455)	(15,091)
Tax liabilities	(74,058)	263,108	(36,666)
Net cash used in operating activities	84,025	187,687	239,620
Net decrease in cash, cash equivalents, restricted cash and restricted time deposits	(298,429)	317,069	(557,958)
Cash, cash equivalents, restricted cash and restricted time deposits at beginning of year	1,368,295	1,051,226	1,609,184
Cash, cash equivalents, restricted cash and restricted time deposits at end of year	1,069,866	1,368,295	1,051,226
Reconciliation of Cash, Cash Equivalents, and Restricted Time Deposits to Condensed Balance Sheets
Cash and cash equivalents				$ 819,713	$ 1,364,096
Total cash, cash equivalents, restricted cash and restricted time deposits at end of year	1,368,295	1,051,226	1,609,184	1,069,866	1,368,295	$ 1,051,226
Sohu.com Limited [Member]
Cash flows from operating activities:
Net loss	(160,082)	(554,526)	(224,021)
Adjustments to reconcile net loss to net cash provided by operating activities:
Investment loss from subsidiaries and VIEs	232,307	331,106	217,408
Share-based compensation expense /(benefit)	(1,916)	(814)	1,309
Others	(993)	0	0
Changes in current assets and liabilities:
Due from subsidiaries and VIEs	(2,963)	0	0
Prepaid and other current assets	(3,996)	3,933	842
Tax liabilities	(79,569)	222,350	(2,014)
Accrued liabilities	1,892	(8,194)	(630)
Net cash used in operating activities	(15,320)	(6,145)	(7,106)
Net decrease in cash, cash equivalents, restricted cash and restricted time deposits	(15,320)	(6,145)	(7,106)
Cash, cash equivalents, restricted cash and restricted time deposits at beginning of year	2,845	8,990	16,096
Cash and cash equivalents, restricted cash and restricted time deposits of Sohu.com Limited at the date of the liquidation of Sohu.com Inc.				29,207	0	0
Cash, cash equivalents, restricted cash and restricted time deposits at end of year	16,732	2,845	8,990
Reconciliation of Cash, Cash Equivalents, and Restricted Time Deposits to Condensed Balance Sheets
Cash and cash equivalents				16,492	2,845	8,990
Restricted time deposits included in other assets	240	0	0
Total cash, cash equivalents, restricted cash and restricted time deposits at end of year	$ 2,845	$ 8,990	$ 8,990	$ 16,732	$ 2,845	$ 8,990