Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Disclosure Of Accrued Expenses [Abstract] | ||
| Accrued research and development expenses | $ 10,123 | $ 7,662 |
| Accrued compensation-related expenses | 3,125 | 2,334 |
| Accrued other expenses | 535 | 252 |
| Total accrued expenses | $ 13,783 | $ 10,248 |