Consolidated Statements of Stockholders' (Deficit) Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 154	$ 300,163	$ (298,387)	$ 1,930
Balance (in Shares) at Dec. 31, 2011	15,429,541
Issuance of shares pursuant to stock awards (in Shares)	9,420
Stock compensation expense		343		343
Issuance of stock warrants		533		533
Net Loss			(19,574)	(19,574)
Balance at Dec. 31, 2012	154	301,039	(317,961)	(16,768)
Balance (in Shares) at Dec. 31, 2012	15,438,961
Issuance of shares pursuant to stock awards (in Shares)	13,795
Issuance of stock to lenders	7	2,428		2,435
Issuance of stock to lenders (in Shares)	700,000
Stock compensation expense		512		512
Net Loss			(22,677)	(22,677)
Balance at Dec. 31, 2013	161	303,979	(340,638)	(36,498)
Balance (in Shares) at Dec. 31, 2013	16,152,756
Issuance of shares pursuant to stock awards (in Shares)	29,327
Issuance of stock to lenders	14	14,443		14,457
Issuance of stock to lenders (in Shares)	1,435,713
Issuance of shares pursuant to warrant exercise (in Shares)	24,441
Issuance of stock pursuant to bond conversion	1	310		311
Issuance of stock pursuant to bond conversion (in Shares)	39,037
Stock compensation expense	1	872		873
Net Loss			(18,881)	(18,881)
Balance at Dec. 31, 2014	$ 177	$ 319,604	$ (359,519)	$ (39,738)
Balance (in Shares) at Dec. 31, 2014	17,681,274