Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net income	$ 39,277	$ 34,295	$ 91,099	$ 79,058
Other comprehensive (loss) income:
Foreign currency translation adjustment	(1,376)	(3,568)	(2,075)	(6,993)
Postretirement benefit plan adjustments, net of tax	8	12	24	37
Other comprehensive loss	(1,368)	(3,556)	(2,051)	(6,956)
Total comprehensive income	$ 37,909	$ 30,739	$ 89,048	$ 72,102