Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Employee Earnout RSUs and CEO Earnout RSUs (Details)

v3.21.2
Stock-Based Compensation - Employee Earnout RSUs and CEO Earnout RSUs (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 23, 2020
D
tranche
$ / shares
shares
Mar. 31, 2021
shares
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage         25.00%  
Stock based compensation expense | $     $ 5,884 $ 507 $ 29,361 $ 1,541
CEO and Founder | Employee earnout restricted stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares issued | shares 1,000,000          
Vesting percentage 33.33%          
Threshold trading days | D 20          
Threshold consecutive trading days | D 30          
Threshold period 36 months          
Vesting period 1 year          
Average grant date fair value $ 12.08          
Stock based compensation expense | $         10,500  
Cost not recognized | $     1,200   1,200  
Shares vested | shares   333,333        
CEO and Founder | Employee earnout restricted stock | Common stock is greater than or equal to $18.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting percentage 33.33%          
Threshold closing price of common stock $ 18.00          
CEO and Founder | Employee earnout restricted stock | Common stock is greater than or equal to $20.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Threshold closing price of common stock 20.00          
CEO and Founder | Employee earnout restricted stock | Common stock is greater than or equal to $22.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Threshold closing price of common stock $ 22.00          
Employee awards            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock based compensation expense | $     1,641 $ 507 $ 6,636 $ 1,541
Employee awards | Employees | Employee earnout restricted stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares issued | shares 1,003,317          
Vesting percentage 33.33%          
Number of tranches | tranche 3          
Threshold trading days | D 20          
Threshold consecutive trading days | D 30          
Threshold period 36 months          
Vesting period 1 year          
Average grant date fair value $ 12.08       $ 16.78  
Stock based compensation expense | $         $ 10,300  
Cost not recognized | $     $ 1,300   $ 1,300  
Shares forfeited | shares         24,278  
Shares granted | shares         4,773  
Vesting of earnout shares (in shares) | shares   329,132        
Employee awards | Employees | Employee earnout restricted stock | Common stock is greater than or equal to $18.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Threshold closing price of common stock 18.00          
Employee awards | Employees | Employee earnout restricted stock | Common stock is greater than or equal to $20.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Threshold closing price of common stock 20.00          
Employee awards | Employees | Employee earnout restricted stock | Common stock is greater than or equal to $22.00            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Threshold closing price of common stock $ 22.00