CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIT - USD ($)	Series A Preferred Stock [Member] Preferred Stock [Member]	Series B Preferred Stock [Member] 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, 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 loss, 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
Net loss					(4,843,000)			(4,843,000)
Issuance of warrants				242,000				242,000
Other comprehensive loss, net of tax:
Unrealized foreign currency translation gain (loss)						51,000		51,000
Change in unrecognized pension costs						(755,000)		(755,000)
Balance at Dec. 31, 2020			$ 13,000	$ 41,330,000	$ (38,007,000)	$ (7,322,000)	$ (3,063,000)	$ (7,049,000)
Balance (in Shares) at Dec. 31, 2020			13,474,116