Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
COMPREHENSIVE INCOME:
Net income	$ 78,521	$ 83,416
Foreign currency translation adjustments, net of tax	4,864	7,986
Total comprehensive income	$ 83,385	$ 91,402