Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$ 25,970	$ 21,259	$ 65,941	$ 64,610
Other comprehensive income (loss):
Foreign currency translation adjustments	(985)	49	(885)	(135)
Change in fair value of interest rate swap	(431)	0	(431)	0
Other comprehensive income (loss)	(1,416)	49	(1,316)	(135)
Comprehensive income	$ 24,554	$ 21,308	$ 64,625	$ 64,475