Commitments and Contingencies - Rent Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Rent expense	$ 1,242	$ 1,932
Research and development.
Other Commitments [Line Items]
Rent expense	966	1,381
Selling, general, and administrative
Other Commitments [Line Items]
Rent expense	252	551
Cost of goods sold
Other Commitments [Line Items]
Rent expense	$ 24	$ 0