Income Taxes - Components of the Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current expense:
Federal	$ 0	$ 0
State	8	0
Foreign	181	18
Total current expense:	189	18
Deferred expense:
Federal	0	0
State	0	0
Foreign	(516)	11
Total deferred expense:	(516)	11
Total income tax expense	$ (327)	$ 29