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Stock-based Compensation - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Aug. 12, 2021
Feb. 28, 2022
Dec. 31, 2024
Dec. 31, 2023
May 08, 2023
Mar. 22, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Issuance date fair value       $ 112    
Consulting expense     $ 6,493 8,480    
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 date fair value       $ 100    
Expiration period       6 months    
Consulting expense       $ 100    
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)       193    
Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost, period of recognition     8 months 12 days      
Unrecognized compensation cost     $ 4,300      
Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost for unvested options     $ 100      
Unrecognized compensation cost, period of recognition     2 months 12 days      
Consulting expense     $ 289 $ 352    
Outstanding Vested and Expected to Vest RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost     $ 50      
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) 8,547          
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)     23,392      
Evergreen Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of additional shares available for grant (in shares)     17,751      
Legacy Stock Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of additional shares available for grant (in shares)     321      
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)     2,958      
Remaining shares available for grant (in shares)     5,954      
Issuance of common stock upon purchase of ESPP (in shares)     0      
Outstanding liability     $ 4      
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) 2,280          
2022 Inducement Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Remaining shares available for grant (in shares)     8,230      
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)   5,715     11,429 10,000