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	$ 20,594	$ 17,407	$ 39,306	$ 30,762
Foreign currency translation adjustment	258	(2,772)	1,277	(2,852)
Comprehensive income	$ 20,852	$ 14,635	$ 40,583	$ 27,910