CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 84,886	$ 105,933	$ 130,136
Other comprehensive (loss) income:
Foreign currency translation adjustment	(2,031)	2,960	(1,198)
Deferred income tax benefit (expense)	710	(1,035)	1,447
Other comprehensive (loss) income, net of tax	(1,321)	1,925	249
Comprehensive income	$ 83,565	$ 107,858	$ 130,385