v3.20.4
Stockholders' Equity - Summary of Stock Option Award Activity (Details) - Stock Options - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Weighted-Average Exercise Price    
Weighted-Average Exercise Price, Beginning balance $ 9.00  
Weighted-Average Exercise Price, Granted 24.95  
Weighted-Average Exercise Price, Exercised 7.47  
Weighted-Average Exercise Price, Forfeited 13.78  
Weighted-Average Exercise Price, Ending balance 10.37 $ 9.00
Weighted-Average Exercise Price, Exercisable 9.35  
Weighted-Average Exercise Price, Vested and expected to vest $ 10.34  
Weighted-Average Remaining Contractual Term    
Weighted-Average Remaining Contractual Term (in years) 5 years 2 months 12 days 5 years 7 months 2 days
Weighted-Average Remaining Contractual Term (in years) 4 years 4 months 13 days  
Weighted-Average Remaining Contractual Term (in years) 5 years 2 months 1 day  
Aggregate Intrinsic Value    
Aggregate Intrinsic Value, Outstanding $ 223,230 $ 75,460
Aggregate Intrinsic Value, Exercisable 173,581  
Aggregate Intrinsic Value, Vested and expected to vest $ 220,777  
Class A Common Stock    
Number of Shares    
Number of Shares, Beginning balance 8,712  
Number of Shares, Granted 90  
Number of Shares, Exercised (3,824)  
Number of Shares, Forfeited (150)  
Number of Shares, Ending balance 4,828 8,712
Number of Shares, Exercisable 3,466  
Number of Shares, Vested and expected to vest 4,761  
Class B Common Stock    
Number of Shares    
Number of Shares, Beginning balance 1,550  
Number of Shares, Exercised (754)  
Number of Shares, Ending balance 796 1,550
Number of Shares, Exercisable 796  
Number of Shares, Vested and expected to vest 796