Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Dec. 31, 2020	$ 6,509	$ (12,450)	$ 2,600	$ 50,195	$ 46,854
Beginning balance, shares at Dec. 31, 2020	17,274	(1,669)
Stock-based compensation			64		64
Net loss				1,306	1,306
Ending balance, value at Mar. 31, 2021	$ 6,509	$ (12,450)	2,664	51,501	48,224
Ending balance, shares at Mar. 31, 2021	17,274	(1,669)
Beginning balance, value at Dec. 31, 2021	$ 6,509	$ (13,436)	2,552	53,506	49,131
Beginning balance, shares at Dec. 31, 2021	17,274	(1,839)
Stock-based compensation			109		109
Net loss				(895)	(895)
Ending balance, value at Mar. 31, 2022	$ 6,509	$ (13,436)	$ 2,661	$ 52,611	$ 48,345
Ending balance, shares at Mar. 31, 2022	17,274	(1,839)