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Discontinued Operations (Details) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Sep. 23, 2021 | Jan. 31, 2011 | May 31, 2010 | Jun. 30, 2019 | Dec. 31, 2011 | Dec. 31, 2021 | [1] | Dec. 31, 2020 | Dec. 31, 2019
Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Depreciation and amortization expense | $ 17,000,000.0 | $ 46,700,000 |  |  |  |  |  |  |
Sogou [Member] |  |  |  |  |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Disposal gain/loss |  | $ 855,000,000 |  |  |  |  | $ 855,009,000 | $ 0 | $ 0
Changyou [Member] |  |  |  |  |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Disposal gain/loss |  |  |  |  |  |  |  | $ 0 | $ 0
Changyou [Member] | Shanghai Jingmao Culture Communication Co., Ltd. ("Shanghai Jingmao") and its affiliate [Member] | Cinema Advertising [Member] |  |  |  |  |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Percentage of acquired equity interests |  |  | 50.00% | 50.00% |  |  |  |  |
Changyou [Member] | Shanghai Jingmao Culture Communication Co., Ltd. ("Shanghai Jingmao") and its affiliate [Member] | Cinema Advertising [Member] |  |  |  |  |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Total cash consideration |  |  | $ 3,000,000.0 |  |  |  |  |  |
Goodwill impairment loss |  |  |  |  |  | $ 5,200,000 |  |  |
Asset impairment charge |  |  |  |  | $ 17,000,000.0 |  |  |  |
[1] | Includes the financial results of the discontinued operations from January 1, 2021 to September 23, 2021.

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