Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 20,159	$ 18,449
Other comprehensive income (loss):
Foreign currency translation adjustment	210	(34)
Tax benefit (provision)	(52)	7
Comprehensive income	$ 20,317	$ 18,422