Income Taxes - Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes in unrecognized tax benefits [Roll Forward]
Balance at beginning of period	$ 1,781	$ 1,524	$ 1,249
Change due to tax positions taken during the current year	412	353	279
Change due to tax positions taken during a prior year	107	79	134
Change due to the lapse of applicable statute of limitations during the current year	(171)	(175)	(138)
Balance at end of period	2,129	1,781	1,524
Accrued interest, net of federal benefit, at end of period	419	330	271
Unrecognized tax benefits that would impact the effective tax rate, if recognized, at end of period	$ 1,766	$ 1,420	$ 1,218