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Stock-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Options    
Outstanding at the beginning of the period (in shares) 4,070  
Exercised (in shares) (1,490)  
Forfeited (in shares) (31)  
Outstanding at the end of the period (in shares) 2,549 4,070
Vested and expected to vest at the end of the period (in shares) 2,549  
Exercisable at the end of the period (in shares) 2,301  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Outstanding at the beginning of the period (in dollars per share) $ 9.32  
Exercised (in dollars per share) 8.92  
Forfeited (in dollars per share) 15.23  
Outstanding at the end of the period (in dollars per share) 9.49 $ 9.32
Vested and expected to vest at the end of the period (in dollars per share) 9.49  
Exercisable at the end of the period (in dollars per share) $ 9.11  
Weighted Average Remaining Contractual Term    
Outstanding 3 years 11 months 26 days 5 years 3 months
Vested and expected to vest 3 years 11 months 26 days  
Exercisable 3 years 8 months 15 days  
Aggregate Intrinsic Value    
Outstanding $ 46,342 $ 12,578
Vested and expected to vest 46,342  
Exercisable $ 42,717