Accrued Expenses and Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2022
Payables and Accruals [Abstract]  
Schedule of accrued expenses and other current liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
December 31,
20222021
Accrued employee termination benefits$1,401 $— 
Accrued contract termination costs1,387 — 
Accrued general and administrative expenses521 889 
Accrued employee compensation and benefits— 7,451 
Accrued external research and development expenses— 2,713 
Accrued manufacturing facility expenses— 2,349 
Deposit received for assets held for sale2,125 — 
Other173 670 
$5,607 $14,072