Condensed Consolidated Statement of Stockholders' Deficit (Unaudited) - USD ($) $ in Thousands	Shares Issued to Lenders [Member] Common Stock [Member]	Shares Issued to Lenders [Member] Additional Paid-in Capital [Member]	Shares Issued to Lenders [Member] AOCI Attributable to Parent [Member]	Shares Issued to Lenders [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2016					21,768,864
Balance at Dec. 31, 2016					$ 218	$ 355,336	$ (409,871)	$ (54,317)
Issuance of shares (in shares)	29,706
Issuance of shares		$ 433		$ 433
Issuance of shares pursuant to bond conversion (in shares)					326,163
Issuance of shares pursuant to bond conversion					$ 3	2,253		2,256
Stock-based compensation expense (in shares)					405,643
Stock-based compensation expense					$ 4	2,122		2,126
Net loss and comprehensive loss							(26,789)	(26,789)
Balance (in shares) at Sep. 30, 2017					22,530,376
Balance at Sep. 30, 2017					$ 225	360,144	(436,660)	(76,291)
Balance (in shares) at Dec. 31, 2017					22,987,434
Balance at Dec. 31, 2017					$ 230	364,806	(443,735)	(78,699)
Issuance of shares (in shares)					1,159,718
Issuance of shares					$ 12	14,570		$ 14,582
Issuance of shares pursuant to bond conversion (in shares)					279,480			279,480
Issuance of shares pursuant to bond conversion					$ 3	2,098		$ 2,101
Net loss and comprehensive loss							(18,243)	(18,243)
Stock-based Compensation expense						350		350
Issuance of shares pursuant to stock awards (in shares)					26,726
Issuance of shares pursuant to stock awards
Balance (in shares) at Sep. 30, 2018					24,453,358
Balance at Sep. 30, 2018					$ 245	$ 381,824	$ (461,978)	$ (79,909)