CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (DEFICIT) (USD $) In Thousands, except Share data	Series B Preferred Stock [Member]	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Beginning, amount at Dec. 31, 2011
Issuance of common stock pursuant to warrant exercises, Shares		7,052,647
Issuance of common stock pursuant to warrant exercises, Amount		$ 70		$ 3,457			$ 3,527
Issuance of common stock pursuant to cashless warrant exercises, Shares		1,573,362
Issuance of common stock pursuant to cashless warrant exercises, Amount		16		688			704
Issuance of common stock pursuant to option exercises, Shares		24,924
Issuance of common stock pursuant to option exercises, Amount				7			7
Recognition of beneficial conversion feature on convertible debt
Warrants issued to consultants as compensation				27			27
Warrants issued as consideration for asset purchase				87			87
Reclassification of warrants previously classified as derivative liabilities				13,588			13,588
Stock-based compensation expense, amount				608			608
Additional minimum pension liability					1		1
Foreign currency translation adjustment					(75)		(75)
Dividends on preferred stock						(229)	(229)
Net loss						(10,190)	(10,190)
Ending, amount at Dec. 31, 2012	2	765	(64)	120,182	(139)	(118,403)	2,343
Ending, shares at Dec. 31, 2012	239,400	76,646,553	(6,704)
Issuance of common stock pursuant to warrant exercises, Shares		61
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		45
Issuance of common stock pursuant to cashless warrant exercises, Amount		4,458,493		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
Recognition of beneficial conversion feature on convertible debt
Stock issued to consultants as compensation, shares		246,000
Stock issued to consultants as compensation, amount		3		38			41
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, amount				575			575
Additional minimum pension liability					(622)		(622)
Foreign currency translation adjustment					(69)		(69)
Dividends on preferred stock						(51)	(51)
Net loss						(9,849)	(9,849)
Ending, amount at Dec. 31, 2013	2	874	(64)	131,652	(830)	(128,303)	3,331
Ending, shares at Dec. 31, 2013	239,400	8,755,317	(6,704)
Issuance of common stock pursuant to warrant exercises, Shares		47
Issuance of common stock pursuant to warrant exercises, Amount		4,742,632		2,801			28,484
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
Additional minimum pension liability					(744)		(744)
Foreign currency translation adjustment					(20)		(20)
Dividends on preferred stock						(51)	(51)
Net loss						(7,940)	(7,940)
Ending, amount at Dec. 31, 2014	$ 2	$ 934	$ (64)	$ 135,982	$ (1,594)	$ (136,294)	$ (1,034)
Ending, shares at Dec. 31, 2014	239,400	93,513,854	(6,704)