General form of registration statement for all companies including face-amount certificate companies

Stock-Based Compensation - Summary of the Company's Non-vested Restricted Share Awards (Details)

v3.21.2
Stock-Based Compensation - Summary of the Company's Non-vested Restricted Share Awards (Details) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Opening Balance, Restricted Stock Awards 891    
Vested, Restricted Stock Awards (461)    
Forfeited, Restricted Stock Awards (10)    
Ending Balance, Nonvested 420   891
Opening Balance, Weighted Average Grant Date Fair Value   $ 0.0121 $ 0.0121
Granted, Weighted Average Grant Date Fair Value $ 7.0844    
Vested, Weighted Average Grant Date Fair Value 8.0407 0.0121  
Forfeited, Weighted Average Grant Date Fair Value 7.0633 0.0121  
Ending Balance, Weighted Average Grant Date Fair Value $ 7.0738 $ 0.0121  
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Opening Balance, Restricted Stock Awards 891    
Granted, Restricted Stock Awards     3,486
Vested, Restricted Stock Awards     (2,375)
Forfeited, Restricted Stock Awards     (220)
Ending Balance, Nonvested     891
Opening Balance, Weighted Average Grant Date Fair Value $ 0.0121    
Granted, Weighted Average Grant Date Fair Value     $ 0.0121
Vested, Weighted Average Grant Date Fair Value     0.0121
Forfeited, Weighted Average Grant Date Fair Value     0.0121
Ending Balance, Weighted Average Grant Date Fair Value     $ 0.0121
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted, Restricted Stock Awards 9,348    
Vested, Restricted Stock Awards (103)    
Forfeited, Restricted Stock Awards (88)    
Ending Balance, Nonvested 9,158