CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net income (loss)	$ (1,652)	$ 8,156	$ 3,503
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	(565)	(124)	15
Net unrealized gains (losses) on available-for-sale investments, net of tax	(14)	(47)
Total other comprehensive income (loss)	(579)	(171)	15
Comprehensive income (loss)	$ (2,231)	$ 7,985	$ 3,518