Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
COMPREHENSIVE INCOME:
Net income	$ 83,416	$ 77,922
Foreign currency translation adjustments, net of tax	7,986	(19,962)
Total comprehensive income	$ 91,402	$ 57,960