CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Total
Beginning Balance, Shares at Dec. 31, 2019	15,906
Beginning Balance, Amount at Dec. 31, 2019	$ 16	$ 73,521	$ (2,284)	$ (56,890)	$ 14,363
Net income (loss)				(637)	(637)
Treasury shares purchased			(524)		(524)
Share-based compensation		50			50
Ending Balance, Shares at Mar. 31, 2020	15,906
Ending Balance, Amount at Mar. 31, 2020	$ 16	73,571	(2,808)	(57,527)	13,252
Beginning Balance, Shares at Dec. 31, 2020	15,756
Beginning Balance, Amount at Dec. 31, 2020	$ 16	73,638	(2,809)	(62,947)	7,898
Net income (loss)				148	148
Share-based compensation		20			20
Ending Balance, Shares at Mar. 31, 2021	15,756
Ending Balance, Amount at Mar. 31, 2021	$ 16	$ 73,658	$ (2,809)	$ (62,799)	$ 8,066