Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 35,813	$ 35,400	$ 57,407	$ 58,510
Other comprehensive income (loss), net of tax:
Amortization of loss on cash flow hedge	216	216	431	431
Foreign currency translation adjustment	175	509	(1,272)	1,030
Other comprehensive income (loss), net of tax	391	725	(841)	1,461
Comprehensive income	$ 36,204	$ 36,125	$ 56,566	$ 59,971