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Noncontrolling Interest (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Apr. 17, 2020
Noncontrolling Interest [Line Items] |  |  |  |
Noncontrolling interest in consolidated balance sheets | $ 1,318,000 | $ 684,612,000 |  |
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income | 6,448,000 | (42,208,000) | $ 105,945,000 |
Changyou [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Noncontrolling interest in consolidated balance sheets | 1,318,000 | 1,321,000 |  |
Percentage of ordinary shares held |  |  |  | 100.00%
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income | $ (3,000) | $ 18,448,000 | $ 46,990,000 |
Percentage of net income/(loss) attributable to noncontrolling interest recognized in consolidated statements of comprehensive income | 0.00% | 0.00% | 33.00% |
Sogou [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Noncontrolling interest in consolidated balance sheets | $ 0 | $ 683,291,000 |  |
Percentage of noncontrolling interest recognized in consolidated balance sheets | 0.00% | 66.00% |  |
Net income /(loss) attributable to noncontrolling interest in consolidated statements of comprehensive income | $ 6,451,000 | $ (60,656,000) | $ 58,955,000 |

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