Income Taxes - Reconciliation of 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 as of beginning of period	$ 2,838	$ 5,706	$ 3,893
Additions for prior year tax positions	0	0	1,813
Reductions for prior year tax positions	0	0	0
Additions for current year tax positions	0	0	0
Reductions for current year tax positions	0	0	0
Reductions related to closed years/settlements with tax authorities	0	(2,868)	0
Balance as of end of period	$ 2,838	$ 2,838	$ 5,706