v3.26.3
Stock-Based Compensation - Narrative (Details)
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2026
installment
warrant
$ / shares
shares
Feb. 28, 2026
USD ($)
shares
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Stock-based compensation expense     $ 7,663,000 $ 5,445,000 $ 23,720,000 $ 20,108,000
Stock-based compensation included in capitalized internal-use software     1,100,000 500,000 3,400,000 2,000,000.0
Intrinsic value of options exercised         11,800,000 4,700,000
RSUs            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Unrecognized compensation costs     26,700,000   $ 26,700,000  
Unrecognized compensation costs, period for recognition (in years)         2 years 3 months 18 days  
Granted (in shares) | shares         4,602,950  
Granted (in USD per share) | $ / shares         $ 4.50  
Grant-date fair value   $ 4,100,000        
Awards vested (in shares) | shares         2,862,688  
RSUs | Bonus Plan            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Stock-based compensation expense     2,900,000 0 $ 8,700,000 2,000,000.0
Awards vested (in shares) | shares   689,790        
Vested in period, fair value   $ 2,600,000        
Stock-based compensation included in capitalized internal-use software     500,000 0 $ 1,400,000 200,000
RSUs | Share-Based Payment Arrangement, Nonemployee            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years)         1 year  
RSUs | Maximum | Share-Based Payment Arrangement, Employee            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years)         4 years  
PSUs            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Unrecognized compensation costs     3,900,000   $ 3,900,000  
Unrecognized compensation costs, period for recognition (in years)         1 year 1 month 6 days  
Performance period (in years)         1 year  
Granted (in shares) | shares         1,042,253  
Stock-based compensation expense     1,200,000   $ 2,300,000  
Granted (in USD per share) | $ / shares         $ 4.18  
Awards vested (in shares) | shares         0  
PSUs | Tranche One            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years)         1 year  
Granted (in shares) | shares         128,205  
PSUs | Tranche Two            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years)         3 years  
Granted (in shares) | shares         914,048  
PSUs | Maximum            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Number of shares earned, percentage of initial award         150.00%  
PSUs | Minimum            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Number of shares earned, percentage of initial award         0.00%  
Stock options            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award expiration period (in years)         10 years  
Employee Stock | Shares issuable pursuant to the 2021 ESPP            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Unrecognized compensation costs, period for recognition (in years)         7 months 6 days  
Stock-based compensation expense     600,000 700,000 $ 1,700,000 1,700,000
Stock-based compensation included in capitalized internal-use software     100,000 $ 0 300,000 $ 200,000
Cost not yet recognized for stock options, amount     $ 800,000   $ 800,000  
Warrants            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Number of common stock purchase warrants issued | warrant 2          
Granted (in shares) | shares 4,194,876       4,194,876  
Exercise price (in USD per share) | $ / shares $ 7.60          
Granted (in USD per share) | $ / shares         $ 5.18  
Grant-date fair value         $ 21,700,000  
Initial Warrant            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years) 5 years          
Granted (in shares) | shares 3,053,314          
Number of installments | installment 20          
Additional Warrant            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]            
Award vesting period (in years) 5 years          
Granted (in shares) | shares 1,141,562          
Number of installments | installment 20