v3.26.1
Stock-Based Compensation - Stock Option Activity (Details) - Employee Stock Option
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding at beginning of period (in shares) | shares 12,163,019  
Granted (in shares) | shares 3,433,942  
Exercised (in shares) | shares (95,537)  
Cancelled or forfeited (in shares) | shares (2,036,132)  
Outstanding at end of period (in shares) | shares 13,465,292 12,163,019
Options vested and exercisable at end of period (in shares) | shares 8,635,055  
Options unvested at ending of period (in shares) | shares 4,830,237  
Weighted Average Exercise Price [Abstract]    
Outstanding at beginning of period (in dollars per share) | $ / shares $ 19.98  
Granted (in dollars per share) | $ / shares 4.25  
Exercised (in dollars per share) | $ / shares 1.59  
Cancelled or forfeited (in dollars per share) | $ / shares 23.45  
Outstanding at end of period (in dollars per share) | $ / shares 15.58 $ 19.98
Options vested and exercisable at end of period (in dollars per share) | $ / shares 21.66  
Options unvested at ending (in dollars per share) | $ / shares $ 4.71  
Weighted-Average Remaining Contractual Term [Abstract]    
Outstanding 4 years 11 months 26 days 4 years 6 months 10 days
Granted 7 years 11 months 15 days  
Options vested and exercisable 3 years 14 days  
Options unvested 8 years 5 months 23 days  
Aggregate Intrinsic Value [Abstract]    
Outstanding at beginning of period | $ $ 706  
Outstanding at end of period | $ 1,106 $ 706
Options vested and exercisable | $ 136  
Options unvested | $ $ 970