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Stock-based Compensation - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 12, 2021
Feb. 28, 2022
Jun. 30, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
May 08, 2023
Mar. 22, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Options vested exercised, aggregate intrinsic value     $ 0     $ 0      
Issuance of common stock for consulting services         $ 112,000        
Consulting expense     1,735,000 $ 2,577,000   $ 3,178,000 $ 4,297,000    
Share-Based Payment Arrangement, Nonemployee                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Issuance of common stock for consulting services (in shares)           0      
Issuance of common stock for consulting services             $ 100,000    
Expiration period             6 months    
Consulting expense             $ 100,000    
Share-Based Payment Arrangement, Nonemployee | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Issuance of common stock for consulting services (in shares)             2,700    
Restricted Stock Units                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost, period of recognition           1 year 1 month 6 days      
Unrecognized compensation cost     7,700,000     $ 7,700,000      
Options                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost for unvested options     200,000     $ 200,000      
Unrecognized compensation cost, period of recognition           7 months 6 days      
Consulting expense     70,000 $ 92,000   $ 145,000 $ 188,000    
Outstanding Vested and Expected to Vest RSUs                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Unrecognized compensation cost     $ 52,800     $ 52,800      
2021 Equity Incentive Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Evergreen provision, percentage of outstanding shares 3.00%                
2021 Equity Incentive Plan | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares reserved for future issuance (in shares) 119,658                
2021 Equity Incentive Plan | Restricted Stock Units                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Remaining shares available for grant (in shares)     323,564     323,564      
Evergreen Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of additional shares available for grant (in shares)           248,508      
Legacy Stock Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of additional shares available for grant (in shares)           3,912      
2021 Employee Stock Purchase Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Evergreen provision, percentage of outstanding shares 0.50%                
Number of additional shares available for grant (in shares)           41,418      
Remaining shares available for grant (in shares)     83,373     83,373      
Issuance of common stock upon purchase of ESPP (in shares)           0      
Outstanding liability     $ 28,300     $ 28,300      
2021 Employee Stock Purchase Plan | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares reserved for future issuance (in shares) 31,909                
2022 Inducement Equity Plan                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Remaining shares available for grant (in shares)     108,837     108,837      
Vesting period   4 years              
2022 Inducement Equity Plan | Common Class A                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares reserved for future issuance (in shares)   80,000           160,000 140,000