Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 13,182	$ 6,867	$ 35,920	$ 26,789
OTHER COMPREHENSIVE LOSS
Foreign currency translation adjustments	(245)	(266)	(1,037)	(163)
COMPREHENSIVE INCOME	$ 12,937	$ 6,601	$ 34,883	$ 26,626