Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Dec. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued employee termination benefits | $ 1,401 | $ 0 |
| Accrued contract termination costs | 1,387 | 0 |
| Accrued general and administrative expenses | 521 | 889 |
| Accrued employee compensation and benefits | 0 | 7,451 |
| Accrued external research and development expenses | 0 | 2,713 |
| Accrued manufacturing facility expenses | 0 | 2,349 |
| Deposit received for assets held for sale | 2,125 | 0 |
| Other | 173 | 670 |
| Accrued expenses and other current liabilities | $ 5,607 | $ 14,072 |