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Stock-Based Compensation - Narrative (Details)
9 Months Ended
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Nonvested options outstanding (in shares) 0  
Unrecognized stock-based compensation cost on the unvested stock options | $ $ 0  
Weighted-average grant-date fair value (in dollars per share) | $ / shares $ 45.37  
Fair value of vested options | $ $ 900,000  
Aggregate intrinsic value | $ $ 100,000  
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock conversion ratio 1  
Fair value of RSU vested in period (in years) | $ $ 22,500,000  
Unvested company stock option | $ $ 44,500,000  
Weighted-average vesting period for compensation cost 2 years  
Restricted Stock Units (RSUs) | Minimum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of converted share 0.00%  
Restricted Stock Units (RSUs) | Maximum    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Percentage of converted share 200.00% 200.00%
Performance-Based Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Approved awards (in shares) 87,966  
Issuance of incremental shares (in shares) 36,839  
Class A Common Stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted (in shares) 0  
2021 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for grant (in shares) 3,916,942  
2021 Employee Stock Purchase Plan | Outstanding 2021 ESPP shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of share reserved for issuance (in shares) 1,051,915  
2021 Employee Stock Purchase Plan | Outstanding 2021 ESPP shares    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Offering period (in months) 6 months  
Fair market value of the shares on the offering date (as percent) 85.00%  
Share-based compensation arrangement by share-based payment award, shares issued in period (in shares) 39,918