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Stock-Based Compensation - Stock Options Narrative (Details)
1 Months Ended 3 Months Ended
Jun. 17, 2020
USD ($)
$ / shares
shares
Feb. 28, 2021
shares
Mar. 31, 2021
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
Jan. 20, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense     $ 34,230,000 $ 1,404,000  
Recapitalization exchange ratio         0.4530
Weighted average grant date fair value (in dollars per share) | $ / shares     $ 7.34    
Intrinsic value of exercises during period     $ 2,000,000.0    
Share-based payment arrangement, exercise of option, tax benefit     $ 0    
Early exercises of nonvested options (in shares) | shares     301,893    
Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grant date fair value $ 16,600,000        
Exercise of vested stock options (in shares) | shares   3,246,139      
Share-based payments arrangement, nonvested award, option, cost not yet recognized, amount     $ 4,200,000    
Options outstanding (in shares) | shares     1,623,070    
Recapitalization exchange ratio         0.4530
Chief Executive Officer | June 17, 2020 Grant One          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award granted (in shares) | shares 3,246,139        
Awards granted (in dollars per share) | $ / shares $ 2.43        
Acquisition with shares consideration threshold (in dollars per share) | $ / shares $ 22.99        
Chief Executive Officer | June 17, 2020 Grant Two          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award granted (in shares) | shares 1,623,070        
Awards granted (in dollars per share) | $ / shares $ 2.43        
Acquisition with shares consideration threshold (in dollars per share) | $ / shares $ 38.31        
Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payments arrangement, nonvested award, option, cost not yet recognized, amount     $ 20,500,000    
Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period (in years)     4 years    
Expiration period (in years)     10 years    
Stock options | Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition     3 years 14 days    
Stock options | Chief Executive Officer | June 17, 2020 Grant One          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock-based compensation expense     $ 11,300,000    
Stock options | New Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period (in years)     4 years    
Award vesting rights, monthly percentage     2.083%    
Stock options | New Employee | Share-based Payment Arrangement, Tranche One          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period (in years)     1 year    
Awards vesting rights, percentage     25.00%    
Stock options | Current Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period (in years)     4 years    
Award vesting rights, monthly percentage     2.083%    
Stock options | Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition     3 years 3 months 29 days