Note 5 - Income Tax Provision - Reconciliation of Income Tax (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income (loss) before total federal income tax	$ 625,729	$ (3,305,485)
Tax rate	21.00%	21.00%
Expected income tax expense (benefit)	$ 131,403	$ (694,152)
Effect of tax-exempt income	(28,448)	(19,204)
Other	6,908	0
State income tax, net	25,749	66,793
Return-to-Provision adjustments	(89,557)	(25,529)
Prior period adjustments	2,741	13,334
Change in valuation allowance	(901,143)	509,758
Total	$ (852,347)	$ (149,000)