v3.25.4
Equity-based Compensation and Equity Incentive Plans - Schedule of Equity-based Compensation Expenses (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Equity-based compensation expense $ 117 $ 3,169
Research and Development Expense    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Equity-based compensation expense 0 232
General and Administrative Expense    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Equity-based compensation expense 117 570
Restructuring charges: expense acceleration    
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]    
Equity-based compensation expense $ 0 $ 2,367