CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($)	Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series B Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2017		$ 3,302,000	$ 2,000	$ 28,273,000	$ (26,889,000)	$ (5,536,000)	$ (3,063,000)	$ (3,911,000)
Balance (in Shares) at Dec. 31, 2017		16,512	2,190,011
Net loss					(4,694,000)			(4,694,000)
Dividends paid on preferred stock					(99,000)			(99,000)
Dividends paid on preferred stock (in Shares)			127,013
Unilumin Securities Purchase Agreement			$ 2,000	1,498,000				1,500,000
Unilumin Securities Purchase Agreement (in Shares)			1,315,789
Stock issued to officer in 2018				10,000				10,000
Stock issued to officer in 2018 (in Shares)			20,000
Warrants issued for financing				288,000				288,000
Other comprehensive income, net of tax:
Unrealized foreign currency translation gain (loss)						(205,000)		(205,000)
Change in unrecognized pension costs						(653,000)		(653,000)
Balance at Dec. 31, 2018		$ 3,302,000	$ 4,000	30,069,000	(31,682,000)	(6,394,000)	(3,063,000)	(7,764,000)
Balance (in Shares) at Dec. 31, 2018		16,512	3,652,813
Net loss					(1,402,000)			(1,402,000)
Preferred stock converted to Common Stock		$ (3,302,000)	$ 1,000	3,301,000
Preferred stock converted to Common Stock (in Shares)		(16,512)	1,651,200
Exercise of warrants, net of costs			$ 6,000	5,292,000				5,298,000
Exercise of warrants, net of costs (in Shares)			5,670,103
Rights Offering, net of costs			$ 2,000	2,426,000				2,428,000
Rights Offering, net of costs (in Shares)			2,500,000
Dividends paid on preferred stock					(80,000)			(80,000)
Other comprehensive income, net of tax:
Unrealized foreign currency translation gain (loss)						118,000		118,000
Change in unrecognized pension costs						(342,000)		(342,000)
Balance at Dec. 31, 2019			$ 13,000	$ 41,088,000	$ (33,164,000)	$ (6,618,000)	$ (3,063,000)	$ (1,744,000)
Balance (in Shares) at Dec. 31, 2019			13,474,116