Note 1 - Summary of Significant Accounting Policies - Reclassifications from Accumulated Other comprehensive Earnings (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net realized investment gains	$ (41,206)	$ (287,455)	$ (785,600)	$ (824,070)
Income Tax Expense (Benefit), Total	(181,114)	(122,405)	980,726	(590,806)
Total reclassification adjustment, net of tax	(629,740)	(424,263)	3,659,167	(2,148,870)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Total reclassification adjustment, net of tax	0	(89,583)	496	(97,384)
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Net realized investment gains	0	(113,397)	628	(123,271)
Income Tax Expense (Benefit), Total	$ 0	$ 23,814	$ (132)	$ 25,887