Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock	Total
Balance at Dec. 31, 2017	$ 8	$ 26,920	$ (17,821)	$ (854)	$ (840)	$ 7,413
Balance, Shares at Dec. 31, 2017	8,465
Net loss			(1,339)			(1,339)
Recognized pension gain/loss, net of taxes				22		22
Issuance of stock awards from treasury stock for directors fees			(18)		34	16
Exercised stock options and issued common stock from treasury stock		(24)			64	40
Conversion of subordinated convertible debt	$ 1	521				522
Conversion of subordinated convertible debt, Shares	967
Stock-based Compensation		493				493
Stock-based Compensation, shares	76
Balance at Dec. 31, 2018	$ 9	27,910	(19,178)	(832)	(742)	7,167
Balance, Shares at Dec. 31, 2018	9,508
Net loss			(742)			(742)
Recognized pension gain/loss, net of taxes				(53)		(53)
Issuance of stock awards from treasury stock		(598)			735	137
Exercised stock options and issued common stock from treasury stock					7	7
Conversion of subordinated convertible debt	$ 1	140				141
Conversion of subordinated convertible debt, Shares	258
Stock-based Compensation		619				619
Stock-based Compensation, shares
Stock awards for directors' fees and employee compensation		87				87
Balance at Dec. 31, 2019	$ 10	$ 28,158	$ (19,920)	$ (885)		$ 7,363
Balance, Shares at Dec. 31, 2019	9,766