Condensed Consolidated Statements of Comprehensive Loss (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Consolidated Statements Of Comprehensive Loss
Net loss	$ (8,489)	$ (4,666)	$ (22,809)	$ (14,545)
Other comprehensive income (loss):
Foreign currency translation adjustments	34	(70)	57	(72)
Comprehensive loss	$ (8,455)	$ (4,736)	$ (22,752)	$ (14,617)