Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2022	12,226,306
Balance at Dec. 31, 2022	$ 123,000	$ 17,099,000	$ 45,025,000	$ (1,489,000)	$ 60,758,000
Net income			552,000	0	$ 552,000
Common stock repurchased and retired (in shares)	(200,000)				(200,000)
Common stock repurchased and retired	$ (2,000)	(280,000)	(551,000)	0	$ (833,000)
Common stock repurchased and retired		(22,000)		0	(22,000)
Stock-based compensation expense		22,000		0	22,000
Options exercised (in shares)	109,250
Options exercised		349,000		0	350,000
Total comprehensive income	$ 0	0	0	137,000	137,000
Balance (in shares) at Mar. 31, 2023	12,135,556
Balance at Mar. 31, 2023	$ 122,000	17,190,000	45,026,000	(1,352,000)	$ 60,986,000
Balance (in shares) at Dec. 31, 2023	11,416,212				11,416,212
Balance at Dec. 31, 2023	$ 114,000	16,339,000	46,552,000	(1,437,000)	$ 61,568,000	[1]
Net income			576,000	0	$ 576,000
Common stock repurchased and retired (in shares)	(270,000)				(270,000)
Common stock repurchased and retired	$ (2,000)	(386,000)	(1,029,000)		$ (1,417,000)
Common stock repurchased and retired		(109,000)	0	0	(109,000)
Treasury stock excise tax		(14,000)			(14,000)
Stock-based compensation expense		109,000	0	(0)	$ 109,000
Options exercised (in shares)	226,666				226,666
Options exercised		813,000		0	$ 815,000
Total comprehensive income	$ 0	0	0	6,000	$ 6,000
Balance (in shares) at Mar. 31, 2024	11,372,878				11,372,878
Balance at Mar. 31, 2024	$ 114,000	$ 16,861,000	$ 46,099,000	$ (1,431,000)	$ 61,643,000

[1] The condensed consolidated balance sheet as of December 31, 2023, has been prepared using information from the audited consolidated balance sheet as of that date.