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	$ 8,036	$ 7,300	$ 23,105	$ 21,282
Other comprehensive loss, net of reclassification adjustments:
Foreign currency translation adjustments	(1,555)	(669)	(127)	(550)
Other comprehensive loss	(1,555)	(669)	(127)	(550)
Comprehensive income	$ 6,481	$ 6,631	$ 22,978	$ 20,732