Components of Income (Loss) Before Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income (loss) before income taxes:
Income before income taxes	$ 56,172	$ 48,403	$ 45,766
CANADA
Income (loss) before income taxes:
Foreign	(1,371)	(2,278)	78
UNITED STATES
Income (loss) before income taxes:
U.S.	19,168	16,875	25,577
Other Countries
Income (loss) before income taxes:
Foreign	$ 38,375	$ 33,806	$ 20,111