Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
COMPREHENSIVE INCOME:
Net income	$ 96,725	$ 85,184	$ 264,353	$ 221,875
Foreign currency translation adjustments, net of tax	(7,378)	(15,281)	(20,957)	(12,995)
Total comprehensive income	$ 89,347	$ 69,903	$ 243,396	$ 208,880