CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	SeriesB1Preferred Stock	Series A2Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings / Accumulated Deficit	Treasury Stock	Total
Beginning Balance, Amount at Dec. 31, 2009		$ 14,275	$ 7	$ 150,659	$ (162,405)	$ (1,383)	$ 1,153
Beginning Balance, Shares at Dec. 31, 2009		4,509	16,633			391
Stock-based compensation - restricted stock, Shares			465
Stock-based compensation - restricted stock, Amount				298			298
Stock-based compensation - stock options				216			216
2010 Preferred Stock Exchange, Shares	60	(1,600)
2010 Preferred Stock Exchange, Amount	6,000	(5,066)		(934)
Warrants issued in connection with 2010 Private Placements				443			443
Conversion of Preferred Stock, Shares		(1,850)	4,624
Conversion of Preferred Stock, Amount		(5,855)	2	5,853
Cashless exercise of warrants, Shares			17
Settlement of liabilities with restricted stock and stock options
Exercise of stock options, Shares			6
Exercise of stock options, Amount				8			8
Sale of Series B Preferred Stock, Shares	40
Sale of Series B Preferred Stock, Amount	4,000						4,000
Cancellation of treasury stock, Shares			(391)			391
Cancellation of treasury stock, Amount				(1,383)		1,383
Costs related to 2010 Private Placements				(750)			(750)
Net loss					(2,663)		(2,663)
Ending Balance, Amount at Dec. 31, 2010	10,000	3,354	9	154,410	(165,068)		2,705
Ending Balance, Shares at Dec. 31, 2010	100	1,059	21,354
Stock-based compensation - restricted stock, Amount				168			168
Stock-based compensation - stock options				66			66
Conversion of Preferred Stock, Shares		(965)	2,413
Conversion of Preferred Stock, Amount		(3,057)		3,057
Settlement of liabilities with restricted stock and stock options				51			51
Exercise of stock options, Shares			39
Adjustment to par value (including reverse stock split), Amount			(6)	6
Warrant exchange, Shares			360
Issuance of restricted stock, Shares			335
Forfeiture of restricted stock, Shares			(90)
Property and equipment purchased with common stock, Shares			769
Property and equipment purchased with common stock, Amount				1,581			1,581
Net loss					369		369
Ending Balance, Amount at Dec. 31, 2011	$ 10,000	$ 297	$ 3	$ 159,339	$ (164,699)		$ 4,940
Ending Balance, Shares at Dec. 31, 2011	100	94	25,180