Stock-Based Compensation - Stock-based Compensation Expense included in Accompanying Statements of Operations and Comprehensive Loss (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
Total stock-based compensation | $ 574 | $ 946 |
Research and Development [Member] | ||
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
Total stock-based compensation | 176 | 464 |
General and Administrative [Member] | ||
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | ||
Total stock-based compensation | $ 398 | $ 482 |