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Stock-Based Compensation - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jul. 20, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation not yet recognized related to unvested options $ 13,046,000   $ 13,046,000      
Unrecognized compensation expense 0   0     $ 386,000
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense 673,000   $ 673,000      
Unvested award, cost not yet recognized, period for recognition     4 years      
Profit Unit Interest            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense $ 270,000 $ 0 $ 499,000 $ 0    
Equity Incentive Plan 2021 | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     4 years      
Award expiration period     10 years      
Equity Incentive Plan 2021 | Stock Options | Share-based Payment Arrangement, Tranche One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     1 year      
Award vesting percentage     25.00%      
Equity Incentive Plan 2021 | Stock Options | Share-based Payment Arrangement, Tranche Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period     36 months      
Award vesting percentage     75.00%      
Class A Common Stock | Equity Incentive Plan 2021            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized for issuance (in shares)         11,500,000