Unaudited Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net loss	$ (6,322)	$ (4,639)	$ (18,992)	$ (12,713)
Other comprehensive income:
Unrealized gains on derivative instruments	1,056	69	936	47
Total other comprehensive income	1,056	69	936	47
Comprehensive loss	$ (5,266)	$ (4,570)	$ (18,056)	$ (12,666)