v3.26.1
Stock-Based Compensation - Summary of Stock Option Activity (Detail) - Employee Stock Option - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Beginning balance, Outstanding Stock Options 23,443  
Granted, outstanding stock options 10,828  
Exercised, Outstanding Stock Options 0  
Canceled and forfeited, Outstanding Stock Options (2,288)  
Expired, Outstanding Stock Options (1,154)  
Ending balance, Outstanding Stock Options 30,829 23,443
Exercisable, Outstanding Stock Options 11,834  
Weighted-Average Exercise Price Per Share, Outstanding, beginning of period $ 4.82  
Weighted-Average Exercise Price Per Share, Granted 2.32  
Weighted-Average Exercise Price Per Share, Exercised 0  
Weighted-Average Exercise Price Per Share, Canceled and forfeited 2.47  
Weighted-Average Exercise Price Per Share, Expired 8.96  
Weighted-Average Exercise Price Per Share, Outstanding, end of period 3.96 $ 4.82
Weighted-Average Exercise Price Per Share, Exercisable $ 5.6  
Weighted-Average Remaining Contractual Term, Outstanding (Years)   8 years 2 months 12 days
Weighted-Average Remaining Contractual Term, Vested 8 years 3 months 18 days  
Weighted-Average Remaining Contractual Term, Exercisable 7 years 2 months 12 days  
Aggregate Intrinsic Value, Outstanding   $ 2,710
Aggregate Intrinsic Value, Vested $ 1,021  
Aggregate Intrinsic Value, Exercisable $ 676