Accrued Expenses Other Current Liabilities - Components of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued research and development expense	$ 2,191	$ 3,152
Accrued payroll and related expenses	1,154	2,932
Accrued professional fees	1,029	380
Accrued other and other current liabilities	954	1,035
Equipment financing, current		213
Accrued Expenses and Other Current Liabilities	$ 5,328	$ 7,712