Accrued Expenses and Other Current Liabilities - Schedule of Composition of Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Accrued clinical and related costs	$ 3,985	$ 2,753
Accrued compensation and related costs	2,850	2,260
Accrued interest	38	69
Accrued other	1,005	459
Operating lease liability, short-term	475	390
Accrued expenses and other current liabilities	$ 8,353	$ 5,931