Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 15,456	$ 12,762
Other comprehensive (loss) income:
Foreign currency translation adjustment	(227)	3,198
Minimum post retirement benefit plan adjustments, net of tax	(24)	(27)
Other comprehensive (loss) income	(203)	3,225
Total comprehensive income	$ 15,253	$ 15,987