Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 31,848	$ 25,632	$ 54,990	$ 39,971
Other comprehensive income (loss):
Foreign currency translation adjustments	(698)	90	(1,534)	100
Change in fair value of interest rate swap	324	0	237	0
Other comprehensive income (loss)	(374)	90	(1,297)	100
Comprehensive income	$ 31,474	$ 25,722	$ 53,693	$ 40,071