Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 3,716	$ 7,244	$ 12,537	$ 19,674
Foreign currency translation adjustments	(2,696)	(3,674)	(3,794)	(2,446)
Comprehensive income	$ 1,020	$ 3,570	$ 8,743	$ 17,228