Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income	$ 25,632	$ 25,840	$ 39,971	$ 43,351
Other comprehensive income (loss):
Foreign currency translation adjustments	90	(1,147)	100	(184)
Other comprehensive income (loss)	90	(1,147)	100	(184)
Comprehensive income	$ 25,722	$ 24,693	$ 40,071	$ 43,167