Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net loss	$ (21,283)	$ (19,398)	$ (7,475)
Other comprehensive loss:
Unrealized losses on derivative instruments	(5)	(326)
Total other comprehensive loss	(5)	(326)
Comprehensive loss	$ (21,288)	$ (19,724)	$ (7,475)