Condensed Consolidated Statements of Stockholders’ Equity (unaudited) - USD ($) $ in Thousands	Common Stock	Treasury stock	Additional paid-in capital	Accum other comp loss	Accum deficit	Total
Balance at Dec. 31, 2020	$ 29	$ (15,147)	$ 376,456		$ (331,403)	$ 29,935
Balance (in Shares) at Dec. 31, 2020	2,971,283	(549,028)
Stock-based compensation			341			341
Common stock issued, net of shares withheld for employee taxes			(162)			(162)
Common stock issued, net of shares withheld for employee taxes (in Shares)	16,600
Net income (loss)					(807)	(807)
Balance at Mar. 31, 2021	$ 29	$ (15,147)	376,635		(332,210)	29,307
Balance (in Shares) at Mar. 31, 2021	2,987,883	(549,028)
Balance at Dec. 31, 2021	$ 29	$ (15,147)	376,640	(1)	(332,133)	29,388
Balance (in Shares) at Dec. 31, 2021	2,995,680	(549,028)
Stock-based compensation			18			18
Unrealized loss on investments, net of tax				(1)		(1)
Net income (loss)					494	494
Balance at Mar. 31, 2022	$ 29	$ (15,147)	$ 376,658	$ (2)	$ (331,639)	$ 29,899
Balance (in Shares) at Mar. 31, 2022	2,995,680	(549,028)