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Segment Information (Segment Operating Information by Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Revenues |  | $ 835,576 |  | $ 749,890 |  | $ 673,803 |
Segment cost of revenues |  | (204,394) | [1] | (216,717) | [2] | (243,505) | [3]
Segment gross profit |  | 631,182 |  | 533,173 |  | 430,298 |
SBC in cost of revenues | [4] | (277) |  | (720) |  | (142) |
Gross profit |  | 630,905 |  | 532,453 |  | 430,156 |
Operating expenses: |  |  |  |  |  |  |
Product development |  | (264,959) | [1] | (234,615) | [2] | (233,487) | [3]
Sales and marketing |  | (182,522) | [1] | (159,329) | [2] | (204,992) | [3]
General and administrative |  | (77,651) | [1] | (51,378) | [2] | (53,421) | [3]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions |  | 0 |  | 0 |  | (7,245) |
SBC in operating expenses | [4] | (8,301) |  | (13,760) |  | (2,208) |
Total operating expenses |  | (533,433) |  | (459,082) |  | (501,353) |
Operating profit/(loss) |  | 97,472 |  | 73,371 |  | (71,197) |
Other income |  | 29,416 |  | 25,993 |  | 7,963 |
Interest income |  | 15,641 |  | 7,369 |  | 6,103 |
Interest expense |  | (7,500) |  | (6,234) |  | (14,370) |
Exchange difference |  | (3,462) |  | (3,800) |  | 1,430 |
Income/(loss) before income tax expense |  | 131,567 |  | 96,699 |  | (70,071) |
Income tax expense / benefit |  | (62,296) |  | (133,226) |  | (28,428) |
Net income/(loss) from continuing operations |  | 69,271 |  | (36,527) |  | (98,499) |
Net income/(loss) from discontinued operations |  | 864,902 |  | (91,793) |  | 55,108 |
Net income/(loss) |  | 934,173 |  | (128,320) |  | (43,391) |
Operating Segments [Member] | Sohu [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Revenues |  | 186,606 |  | 201,544 |  | 218,442 |
Segment cost of revenues |  | (113,881) | [1] | (122,362) | [2] | (148,258) | [3]
Segment gross profit |  | 72,725 |  | 79,182 |  | 70,184 |
SBC in cost of revenues | [4] | (1) |  | (177) |  | (23) |
Gross profit |  | 72,724 |  | 79,005 |  | 70,161 |
Operating expenses: |  |  |  |  |  |  |
Product development |  | (113,186) | [1] | (97,681) | [2] | (113,761) | [3]
Sales and marketing |  | (126,126) | [1] | (106,057) | [2] | (155,226) | [3]
General and administrative |  | (36,949) | [1] | (25,861) | [2] | (31,330) | [3]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions |  |  |  |  |  | (7,245) |
SBC in operating expenses | [4] | (804) |  | (1,759) |  | (1,023) |
Total operating expenses |  | (277,065) |  | (231,358) |  | (308,585) |
Operating profit/(loss) |  | (204,341) |  | (152,353) |  | (238,424) |
Operating Segments [Member] | Changyou [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Revenues |  | 648,970 |  | 548,346 |  | 455,380 |
Segment cost of revenues |  | (90,517) | [1] | (94,362) | [2] | (95,268) | [3]
Segment gross profit |  | 558,453 |  | 453,984 |  | 360,112 |
SBC in cost of revenues | [4] | (276) |  | (543) |  | (120) |
Gross profit |  | 558,177 |  | 453,441 |  | 359,992 |
Operating expenses: |  |  |  |  |  |  |
Product development |  | (151,773) | [1] | (136,934) | [2] | (119,726) | [3]
Sales and marketing |  | (56,396) | [1] | (53,272) | [2] | (49,768) | [3]
General and administrative |  | (40,702) | [1] | (25,517) | [2] | (22,074) | [3]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions |  |  |  |  |  | 0 |
SBC in operating expenses | [4] | (7,497) |  | (12,001) |  | (1,185) |
Total operating expenses |  | (256,368) |  | (227,724) |  | (192,753) |
Operating profit/(loss) |  | 301,809 |  | 225,717 |  | 167,239 |
Eliminations [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Revenues |  | 0 |  | 0 |  | (19) |
Segment cost of revenues |  | 4 | [1] | 7 | [2] | 21 | [3]
Segment gross profit |  | 4 |  | 7 |  | 2 |
SBC in cost of revenues | [4] | 0 |  | 0 |  | 1 |
Gross profit |  | 4 |  | 7 |  | 3 |
Operating expenses: |  |  |  |  |  |  |
Product development |  | 0 | [1] | 0 | [2] | 0 | [3]
Sales and marketing |  | 0 | [1] | 0 | [2] | 2 | [3]
General and administrative |  | 0 | [1] | 0 | [2] | (17) | [3]
Goodwill impairment and impairment of intangible assets acquired as part of business acquisitions |  |  |  |  |  | 0 |
SBC in operating expenses | [4] | 0 |  | 0 |  | 0 |
Total operating expenses |  | 0 |  | 0 |  | (15) |
Operating profit/(loss) |  | $ 4 |  | $ 7 |  | $ (12) |
[1] | Total depreciation and amortization expenses of Sohu and Changyou were $23.4 million and $12.6 million, respectively, for the year ended December 31, 2021.
[2] | Total depreciation and amortization expenses of Sohu and Changyou were $26.4 million and $13.5 million, respectively, for the year ended December 31, 2020.
[3] | Total depreciation and amortization expenses of Sohu and Changyou were $50.7 million and $16.4 million, respectively, for the year ended December 31, 2019.
[4] | “SBC” stands for share-based compensation expense.

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