CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income	$ 69,628	$ 62,335	$ 126,096	$ 118,467
Other comprehensive income (loss):
Foreign currency translation adjustments	1,152	4,872	12,223	(12,758)
Comprehensive income	$ 70,780	$ 67,207	$ 138,319	$ 105,709