Income Taxes - Provision for Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current
Federal	$ 0	$ 0
State	0	0
Foreign	1,600	0
Total current	1,600	0
Deferred
Federal	0	0
State	0	0
Foreign	0	0
Total deferred	0	0
Total income tax expense (benefit)	$ 1,600	$ 0