Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance, beginning of year	$ 1,021	$ 1,172	$ 0
Decrease related to tax positions taken in prior years	0	(365)	0
Increase related to positions taken in the current year	214	214	1,172
Balance, end of year	$ 1,235	$ 1,021	$ 1,172