Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income	$ 32,076	$ 25,970	$ 87,066	$ 65,941
Other comprehensive loss:
Foreign currency translation adjustments	(2,044)	(985)	(3,578)	(885)
Change in fair value of interest rate swap	(605)	(431)	(368)	(431)
Other comprehensive loss	(2,649)	(1,416)	(3,946)	(1,316)
Comprehensive income	$ 29,427	$ 24,554	$ 83,120	$ 64,625