CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands	Series B Preferred Stock [Member]	Series E Preferred Stock	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Beginning, shares at Dec. 31, 2012	239,400		76,646,553	(6,704)
Beginning, amount at Dec. 31, 2012	$ 2		$ 765	$ (64)	$ 120,182	$ (139)	$ (118,403)	$ 2,343
Issuance of common stock pursuant to warrant exercises, Shares			6,132,779
Issuance of common stock pursuant to warrant exercises, Amount			$ 61		3,230			3,291
Settlement of derivative liabilities pursuant to warrants exercised for cash					279			279
Issuance of common stock pursuant to cashless warrant exercises, Shares			4,458,493
Issuance of common stock pursuant to cashless warrant exercises, Amount			$ 45		6,453			6,498
Warrants issued to secure line of credit borrowing facility					580			580
Issuance of common stock pursuant to option exercises, Shares			35,310
Issuance of common stock pursuant to option exercises, Amount					11			11
Stock issued to consultants as compensation, shares			264,000
Stock issued to consultants as compensation, amount			$ 3		38			$ 41
Recognition of beneficial conversion feature on convertible debt
Warrants issued to consultants as compensation					108			$ 108
Conversion of related party notes payable to common stock, shares			18,182
Conversion of related party notes payable to common stock, amount					10			10
Reclassification of warrants previously classified as derivative liabilities					186			186
Stock-based compensation expense, shares
Stock-based compensation expense, amount					$ 575			575
Addition/reduction in minimum pension liability						$ (622)		(622)
Foreign currency translation adjustment						$ (69)		(69)
Dividends on preferred stock							$ (51)	(51)
Net loss							(9,849)	(9,849)
Ending, shares at Dec. 31, 2013	239,400		87,555,317	(6,704)
Ending, amount at Dec. 31, 2013	$ 2		$ 874	$ (64)	$ 131,652	$ (830)	$ (128,303)	3,331
Issuance of common stock pursuant to warrant exercises, Shares			4,742,632
Issuance of common stock pursuant to warrant exercises, Amount			$ 47		2,801			2,848
Settlement of derivative liabilities pursuant to warrants exercised for cash					57			$ 57
Issuance of common stock pursuant to cashless warrant exercises, Shares			868,565
Issuance of common stock pursuant to cashless warrant exercises, Amount			$ 9		(9)
Warrants issued to secure line of credit borrowing facility					128			$ 128
Issuance of common stock pursuant to option exercises, Shares			98,617
Issuance of common stock pursuant to option exercises, Amount			$ 1		66			67
Recognition of beneficial conversion feature on convertible debt					296			296
Warrants issued to consultants as compensation					53			53
Conversion of related party notes payable to common stock, shares			154,607
Conversion of related party notes payable to common stock, amount			$ 2		83			85
Stock-based compensation expense, shares			94,116
Stock-based compensation expense, amount			$ 1		$ 855			856
Addition/reduction in minimum pension liability						$ (744)		(744)
Foreign currency translation adjustment						$ (20)		(20)
Dividends on preferred stock							$ (51)	(51)
Net loss							(7,940)	(7,940)
Ending, shares at Dec. 31, 2014	239,400		93,513,854	(6,704)
Ending, amount at Dec. 31, 2014	$ 2		$ 934	$ (64)	$ 135,982	$ (1,594)	$ (136,294)	(1,034)
Settlement of derivative liabilities pursuant to warrants exercised for cash		$ 10,022
Issuance of Series E Convertible Redeemable Preferred Stock for cash, net of issuance costs, Shares		10,022
Issuance of Series E Convertible Redeemable Preferred Stock for cash, net of issuance costs, Amount					9,955			9,955
Conversion of related party debt into Series E Convertible Redeemable Preferred Stock, Shares		1,978
Conversion of related party debt into Series E Convertible Redeemable Preferred Stock, Amount					1,978			$ 1,978
Issuance of Common Stock in payment of Series E Preferred dividends, Shares			478,664
Issuance of Common Stock in payment of Series E Preferred dividends, Amount			$ 5		769		$ (774)
Issuance of common stock pursuant to cashless warrant exercises, Shares			45,376
Issuance of common stock pursuant to cashless warrant exercises, Amount			$ 1		(1)
Issuance of common stock pursuant to option exercises, Shares			39,705
Issuance of common stock pursuant to option exercises, Amount					33			$ 33
Recognition of beneficial conversion feature on convertible debt					146			146
Warrants modified in lieu of cash as compensation					80			80
Stock-based compensation expense, shares
Stock-based compensation expense, amount					$ 960			960
Addition/reduction in minimum pension liability						$ 332		332
Foreign currency translation adjustment						$ 67		67
Dividends on preferred stock							$ (291)	(291)
Net loss							(8,534)	(8,534)
Ending, shares at Dec. 31, 2015	239,400	12,000	94,077,599	(6,704)
Ending, amount at Dec. 31, 2015	$ 2		$ 940	$ (64)	$ 149,902	$ (1,195)	$ (145,893)	$ 3,692