CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Shares	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2013	$ 92	$ 272,787	$ (138,087)	$ 134,792
Balance (in shares) at Dec. 31, 2013	91,761,249
Stock Options:
Stock-based compensation		2,161		2,161
Issuance of Units of Common Stock:
Issued pursuant to stock awards		(36)		(36)
Issued pursuant to stock awards (in shares)	439,408
Debt issuance costs		(50)		(50)
Stock Warrants:
Issuance of Warrants		786		786
Net loss			(10,960)	(10,960)
Balance at Dec. 31, 2014	$ 92	275,648	(149,047)	126,693
Balance (in shares) at Dec. 31, 2014	92,200,657
Stock Options:
Stock-based compensation		115		115
Issuance of Units of Common Stock:
Issued pursuant to stock awards	$ 1	(90)		(89)
Issued pursuant to stock awards (in shares)	1,139,403
Debt issuance costs		(80)		(80)
Conversion of Senior Convertible Promissory Notes	$ 3	1,983		1,986
Conversion of Senior Convertible Promissory Notes (in shares)	2,625,000
Private Placement	$ 13	3,987		4,000
Private Placement (in shares)	13,333,333
Stock Warrants:
Net loss			(15,223)	(15,223)
Balance at Dec. 31, 2015	$ 109	281,563	(164,270)	$ 117,402
Balance (in shares) at Dec. 31, 2015	109,298,393			109,298,393
Stock Options:
Stock-based compensation		400		$ 400
Issuance of Units of Common Stock:
Issued pursuant to stock awards	$ 2	(63)		(61)
Issued pursuant to stock awards (in shares)	1,312,894
Stock Warrants:
Net loss			(8,067)	(8,067)
Balance at Dec. 31, 2016	$ 111	$ 281,900	$ (172,337)	$ 109,674
Balance (in shares) at Dec. 31, 2016	110,611,287			110,611,287