Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 29,307	$ 25,949	$ 44,763	$ 38,711
Other comprehensive (loss) income:
Foreign currency translation adjustment	(3,198)	761	(3,425)	3,959
Minimum post retirement benefit plan adjustments, net of tax	(1)	(27)	(25)	(54)
Other comprehensive (loss) income	(3,197)	788	(3,400)	4,013
Total comprehensive income	$ 26,110	$ 26,737	$ 41,363	$ 42,724