CONSOLIDATED COMPREHENSIVE INCOME STATEMENTS (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 8,488	$ 5,841	$ 12,761	$ 8,787
Other comprehensive income (loss):
Change in foreign currency translation adjustment	267	650	(1,844)	(476)
Comprehensive income (loss)	$ 8,755	$ 6,491	$ 10,917	$ 8,311