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Stockholders' Equity - Schedule of Share Based Compensation Stock Option Activity (Detail) - Zynga Stock Options [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Stock Options Outstanding, Beginning balance | shares 31,204  
Stock Options, Granted | shares 1,633  
Stock Options, Forfeited, expired and cancelled | shares (19)  
Stock Options, Exercised | shares (2,435)  
Stock Options Outstanding, Ending balance | shares 30,383 31,204
Outstanding Options, Weighted Average Exercise Price (per option), Beginning Balance | $ / shares $ 3.24  
Weighted Average Exercise Price (per option), Granted | $ / shares 6.55  
Weighted Average Exercise Price (per option), Forfeited, expired and cancelled | $ / shares 3.37  
Weighted Average Exercise Price (per option), Exercised | $ / shares 2.93  
Outstanding Options, Weighted Average Exercise Price (per option), Ending Balance | $ / shares $ 3.45 $ 3.24
Aggregate Intrinsic Value of Stock Options Outstanding | $ $ 172,404 $ 89,786
Outstanding Options, Weighted Average Contractual Term (in years) 6 years 8 months 4 days 7 years 2 months 8 days