Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net loss	$ (6,354)	$ (2,564)	$ (19,067)	$ (8,991)
Other comprehensive loss:
Unrealized losses on derivative instruments	(589)		(542)
Total other comprehensive loss	(589)		(542)
Comprehensive loss	$ (6,943)	$ (2,564)	$ (19,609)	$ (8,991)