CONSOLIDATED STATEMENTS OF STOCKHOLDERS` DEFICIT - USD ($) $ in Thousands	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, 2016		$ 3,302	$ 2	$ 27,935	$ (23,842)	$ (5,610)	$ (3,063)	$ (1,276)
Balance (in Shares) at Dec. 31, 2016		16,512	1,738,511
Net loss					(2,849)			(2,849)
Dividends paid on preferred stock					(198)			(198)
Stock issued to directors/officers				338				338
Stock issued to directors/officers (in Shares)			451,500
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation gain (loss)						169		169
Change in unrecognized pension costs						(95)		(95)
Balance at Dec. 31, 2017		$ 3,302	$ 2	28,273	(26,889)	(5,536)	(3,063)	(3,911)
Balance (in Shares) at Dec. 31, 2017		16,512	2,190,011
Net loss					(4,694)			(4,694)
Dividends paid on preferred stock					(99)			(99)
Unilumin Securities Purchase Agreement			$ 2	1,498				1,500
Unilumin Securities Purchase Agreement (in Shares)			1,315,789
Stock dividends paid on preferred stock (in Shares)			127,013
Stock issued to directors/officers				10				10
Stock issued to directors/officers (in Shares)			20,000
Warrants issued for SMI and SMII financings				288				288
Other comprehensive income (loss), net of tax:
Unrealized foreign currency translation gain (loss)						(205)		(205)
Change in unrecognized pension costs						(653)		(653)
Balance at Dec. 31, 2018		$ 3,302	$ 4	$ 30,069	$ (31,682)	$ (6,394)	$ (3,063)	$ (7,764)
Balance (in Shares) at Dec. 31, 2018		16,512	3,652,813