Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
COMPREHENSIVE INCOME:
Net income	$ 90,569	$ 96,725	$ 265,601	$ 264,353
Foreign currency translation adjustments, net of tax	(738)	(7,378)	3,055	(20,957)
Total comprehensive income	$ 89,831	$ 89,347	$ 268,656	$ 243,396