Other Comprehensive Income (Loss) - Other comprehensive income (loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other comprehensive income (loss), before tax amount
Other comprehensive income (loss), before tax amount	$ 1,566	$ (918)	$ 1,051
Other comprehensive income (loss), tax (expense) benefit
Other comprehensive income (loss), tax (expense) benefit	(430)	81	(195)
Other comprehensive income (loss):
Total other comprehensive income (loss), net of tax	1,136	(837)	856
Foreign Currency Translation Adjustment
Other comprehensive income (loss), before tax amount
Other comprehensive income (loss), before reclassifications, before tax	1,787	(827)	223
Other comprehensive income (loss), tax (expense) benefit
Other comprehensive income (loss), before reclassifications, tax (expense) benefit	(482)	61
Other comprehensive income (loss):
Other comprehensive income (loss), before reclassifications, net of tax	1,305	(766)	223
Unrealized/Recognized Gains (Losses)
Other comprehensive income (loss), before tax amount
Other comprehensive income (loss), before reclassifications, before tax	(208)	(29)	1,127
Amounts reclassified from accumulated other comprehensive income (loss), before tax	(13)	(62)	(299)
Other comprehensive income (loss), tax (expense) benefit
Other comprehensive income (loss), before reclassifications, tax (expense) benefit	49	7	(265)
Amounts reclassified from accumulated other comprehensive income (loss), tax (expense) benefit	3	13	70
Other comprehensive income (loss):
Other comprehensive income (loss), before reclassifications, net of tax	159	22	862
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	$ (10)	$ (49)	$ (229)