Accrued Expenses (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued employee compensation and benefits | $ 5,596 | $ 3,513 |
| Accrued tenant improvements | 13 | 2,385 |
| Accrued external research and development expenses | 3,079 | 2,146 |
| Accrued professional fees | 495 | 979 |
| Other | 379 | 138 |
| Total | $ 9,562 | $ 9,161 |