Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 30,760	$ 30,518	$ 23,979
Other comprehensive income (loss), net of reclassification adjustments:
Unrealized gains (losses) on foreign currency forward contracts	0	0	(65)
Foreign currency translation adjustments	(1,369)	(1,532)	105
Other comprehensive income (loss), net of tax:	(1,369)	(1,532)	40
Comprehensive income	$ 29,391	$ 28,986	$ 24,019