Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock	Total
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 loss, net of taxes				(53)		(53)
Issuance of stock awards from treasury stock		(598)			735	137
Stock awards for directors’ fees and employee compensation		87				87
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
Balance at Dec. 31, 2019	$ 10	28,158	(19,920)	(885)		7,363
Balance, Shares at Dec. 31, 2019	9,766
Net loss			(7,474)			(7,474)
Recognized pension loss, net of taxes				(67)		(67)
Issuance of stock, net of offering costs	$ 2	810				812
Issuance of stock, net of offering costs, shares	1,429
Exercised stock options		13				13
Exercised stock options, shares	25
Conversion of subordinated convertible debt		186				186
Conversion of subordinated convertible debt, Shares	338
Stock-based Compensation		404				404
Balance at Dec. 31, 2020	$ 12	$ 29,571	$ (27,394)	$ (952)		$ 1,237
Balance, Shares at Dec. 31, 2020	11,558