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 at January 1	$ 1,873	$ 1,924	$ 324
Additions based on tax positions related to the current year	53	273	314
Additions for tax positions of prior years	0	0	1,675
Lapse of statute of limitations	(262)	(324)	(389)
Balance at December 31	$ 1,664	$ 1,873	$ 1,924