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Common Stock and Stockholders' Equity - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Other disclosures    
Stock-based compensation $ 86,300 $ 18,315
RSUs    
Common Stock and Stockholders' Equity    
Vesting period 3 years  
Shares    
Outstanding at beginning of period (in shares) 3,550,595  
Granted including replacement awards for merger (in shares) 402,210  
Vested and issued (in shares) (708,798)  
Forfeited (in shares) (115,243)  
Outstanding at end of period (in shares) 3,128,764  
Vested and unissued (in shares) 13,755  
Nonvested (in shares) 3,115,009  
Weighted-Average Grant Date Fair Value Per Share    
Outstanding at beginning of period (in dollars per share) $ 162.11  
Granted including replacement awards for merger (in dollars per share) 218.88  
Vested and issued (in dollars per share) 102.94  
Forfeited (in dollars per share) 184.40  
Outstanding at end of period (in dollars per share) 181.99  
Vested and unissued (in dollars per share) 50.90  
Non-vested (in dollars per share) $ 182.57  
Other disclosures    
Grant date fair value of RSUs granted $ 88,000 39,500
Stock-based compensation 50,900 $ 9,400
Unrecognized compensation cost related to non vested awards $ 473,200  
Period over which unrecognized compensation cost is expected to be recognized 2 years 7 months 6 days  
Minimum | RSUs    
Common Stock and Stockholders' Equity    
Vesting period 1 year  
Maximum | RSUs    
Common Stock and Stockholders' Equity    
Vesting period 4 years