Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current income taxes:
Federal	$ 0
State	631
Foreign	0
Total current income taxes	631
Deferred income taxes:
Federal	397
State	(1,873)
Foreign	0
Total deferred income taxes	(1,476)	$ 0	$ 0
Other tax expense	931
Income tax expense	$ 86	$ 0	$ 0