Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Assets | ||
| Total assets | $ 41,909 | $ 35,430 |
| Money market securities (cash equivalents) [Member] | ||
| Assets | ||
| Total assets | 41,859 | 35,380 |
| Restricted cash [Member] | ||
| Assets | ||
| Total assets | 50 | 50 |
| Level 1 [Member] | ||
| Assets | ||
| Total assets | 41,909 | 35,430 |
| Level 1 [Member] | Money market securities (cash equivalents) [Member] | ||
| Assets | ||
| Total assets | 41,859 | 35,380 |
| Level 1 [Member] | Restricted cash [Member] | ||
| Assets | ||
| Total assets | $ 50 | $ 50 |