CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net income	$ 56,542	$ 51,023
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	931	(8,925)
Comprehensive income	$ 57,473	$ 42,098