Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net loss	$ (13,664)	$ (20,117)	$ (9,197)
Foreign currency translation adjustment	(1,573)	(943)	(669)
Comprehensive loss	$ (15,237)	$ (21,060)	$ (9,866)