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
Statement of Comprehensive Income [Abstract]
Net income	$ 55,673	$ 45,627	$ 112,061	$ 102,633
Other comprehensive (loss) income, net of taxes:
Foreign currency translation adjustments	(13,820)	(19,513)	2,617	(28,695)
Actuarial gain on retirement plan, net of tax effect of $(5), $(9), $(10), and $(17), respectively	13	21	26	42
Total other comprehensive (loss) income, net of taxes	(13,807)	(19,492)	2,643	(28,653)
Comprehensive income	$ 41,866	$ 26,135	$ 114,704	$ 73,980