Condensed Consolidated Statement of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning Balance (in shares) at Dec. 31, 2015		39,940,667
Beginning Balance at Dec. 31, 2015	$ 251,825	$ 40	$ 327,045	$ (75,260)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(15,410)			(15,410)
Warrant exercise, net(in shares)		21,597
Warrant exercise, net	$ 0	$ 0	0
Option exercise, net (in shares)	16,000	16,000
Option exercise, net	$ 87	$ 0	87
Restricted stock issuances (in shares)		8,250
Restricted stock issuances	832		832
Restricted stock forfeitures (in shares)		(105,450)
Restricted stock forfeitures	(511)		(511)
Stock based compensation	167		167
Ending Balance (in shares) at Mar. 31, 2016		39,881,064
Ending Balance at Mar. 31, 2016	$ 236,990	$ 40	$ 327,620	$ (90,670)