Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 17,398	$ 20,159
Other comprehensive income (loss):
Foreign currency translation adjustment	52	210
Tax benefit (provision)	(14)	(52)
Comprehensive income	$ 17,436	$ 20,317