Note 8 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Provision for income taxes at the statutory federal tax rates	$ (151,584)	$ 1,041,155
Dividends received deduction	(71,819)	(34,207)
Tax-exempt interest income	(49,460)	(58,153)
Proration of tax-exempt interest and dividends received deduction	29,506	22,359
Nondeductible expenses	74,159	48,155
Officer life insurance, net	(2,500)	(188)
Officer life insurance, net	2,500	188
Prior year true-up and other	31,532	(204,395)
Total	$ (140,166)	$ 815,102