Income Taxes - Components of Deferred Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred tax expense:
Federal	$ 12,994	$ 9,855
State	1,878	2,711
Foreign	461	583
Total deferred income taxes	15,333	13,149
Change in deferred tax valuation allowance	(15,333)	(13,149)
Net deferred income tax	$ 0	$ 0