Prepaids and Other Current Assets - Components of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Prepaid Expense and Other Assets, Current [Abstract]
Clinical trial costs	$ 1,053	$ 805
Prepaid Insurance	2,593	2,598
Other receivables	1,289	31
Other prepaid expenses and other current assets	983	1,308
Prepaid Expense and Other Assets, Current	$ 5,918	$ 4,742