v3.26.1
Share-Based Compensation - Schedule of Stock Option Activity (Detail)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Stock Option Shares    
Shares, Outstanding at beginning balance (in shares) | shares 8,120,654  
Shares, Granted (in shares) | shares 3,070,847  
Shares, Exercised (in shares) | shares (24,286)  
Shares, Cancelled/Forfeited (in shares) | shares (41,539)  
Shares, Outstanding at ending balance (in shares) | shares 11,125,676 8,120,654
Shares, Options exercisable (in shares) | shares 4,761,919  
Shares, Vested and expected to vest (in shares) | shares 11,125,676  
Weighted Average Exercise Price    
Weighted Average Exercise Price, Outstanding at beginning balance (in dollars per share) | $ / shares $ 6.31  
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares 3.60  
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares 2.29  
Weighted Average Exercise Price, Cancelled/Forfeited (in dollars per share) | $ / shares 9.76  
Weighted Average Exercise Price, Outstanding at ending balance (in dollars per share) | $ / shares 5.56 $ 6.31
Weighted Average Exercise Price, Options exercisable (in dollars per share) | $ / shares 9.05  
Weighted Average Exercise Price, Vested and expected to vest (in dollars per share) | $ / shares $ 5.56  
Weighted Average Remaining Contractual Term, Outstanding 8 years 3 months 14 days 8 years 2 months 8 days
Weighted Average Remaining Contractual Term, Options exercisable 7 years 25 days  
Weighted Average Remaining Contractual Term, Vested and expected to vest 8 years 3 months 14 days  
Aggregate Intrinsic Value, Outstanding | $ $ 17,066 $ 2,642
Aggregate Intrinsic Value, Options exercisable | $ 6,039  
Aggregate Intrinsic Value, Vested and expected to vest | $ $ 17,066