Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (4,522)	$ (1,989)
Other comprehensive income:
Foreign currency translation adjustments	5	1
Comprehensive loss	$ (4,517)	$ (1,988)