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Sohu.com Limited Shareholders' Equity (Sohu's 2018 Share Incentive Plan, Share Option Activity, Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2021 | Sep. 30, 2020 | Jul. 31, 2019 | Feb. 28, 2019 | Nov. 30, 2017 | Sep. 30, 2017 | May 31, 2016 | Feb. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | $ 8,578 | $ 14,480 | $ 2,350 |  |  |  |  |  |  |  |
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
Sohu.com Limited [Member] | Sohu 2018 Share Incentive Plan [Member] | Stock Options [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 options granted in period | 113,000 |  |  |  |  |  |  |  |  |  |
Total fair value of stock options granted | $ 28,500 |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | 1,800 | 2,600 | (1,900) |  |  |  |  |  |  |  |
Total fair values of share options vested | 2,100 | 1,000 | 2,500 |  |  |  |  |  |  |  |
Total intrinsic value of share options exercised | $ 800 | $ 700 | $ 600 |  |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |  |  |
Number of shares under contractually granted share options |  |  |  | 5,000 | 34,000 | 477,500 | 20,000 |  |  |  |
Exercise prices of option granted |  |  |  | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 |  |  |  |
Number of options granted in period | 927,788 |  |  |  |  |  |  |  |  |  |

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