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Discontinued Operations (Cash Flow Information of Discontinued Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Discontinued Operations [Line Items] |  |  |  |  |
Net cash provided by/(used in) discontinued operating activities |  | $ (175,888) |  | $ (68,187) | $ 228,857
Net cash provided by/(used in) discontinued investing activities |  | 1,054,148 |  | 235,374 | (228,406)
Net cash used in discontinued financing activities |  | (9,132) |  | (8,209) | (33,415)
Sogou [Member] |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |
Net cash provided by/(used in) discontinued operating activities |  | (175,888) | [1] | (68,187) | 219,516
Net cash provided by/(used in) discontinued investing activities |  | 1,054,148 | [1] | 235,374 | (217,598)
Net cash used in discontinued financing activities |  | $ (9,132) | [1] | $ (8,209) | (33,415)
Changyou [Member] | Shanghai Jingmao Culture Communication Co., Ltd. ("Shanghai Jingmao") and its affiliate [Member] |  |  |  |  |
Discontinued Operations [Line Items] |  |  |  |  |
Net cash provided by/(used in) discontinued operating activities | [2] |  |  |  | 9,341
Net cash provided by/(used in) discontinued investing activities | [2] |  |  |  | (10,808)
Net cash used in discontinued financing activities | [2] |  |  |  | $ 0
[1] | Includes the financial results of the discontinued operations from January 1, 2021 to September 23, 2021.
[2] | Includes the financial results of the discontinued operations from January 1, 2019 to August 12, 2019.

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- Definition Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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- Definition Amount of cash inflow (outflow) of operating activities of discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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