CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance, beginning at Dec. 31, 2019	$ 42	$ (39)	$ 61,955	$ 38,284	$ 100,242
Balance, beginning (in shares) at Dec. 31, 2019	4,173,675
Increase (Decrease) in Stockholders' Equity
Net income				841	841
Balance, end at Mar. 31, 2020	$ 42	(39)	61,955	39,125	101,083
Balance, end (in shares) at Mar. 31, 2020	4,173,675
Balance, beginning at Dec. 31, 2020	$ 42	(39)	61,955	42,498	$ 104,456
Balance, beginning (in shares) at Dec. 31, 2020	4,173,675				4,173,675
Increase (Decrease) in Stockholders' Equity
Net income				1,352	$ 1,352
Balance, end at Mar. 31, 2021	$ 42	$ (39)	$ 61,955	$ 43,850	$ 105,808
Balance, end (in shares) at Mar. 31, 2021	4,173,675				4,173,675