Note 1 - Summary of Significant Accounting Policies - Reclassifications from Accumulated Other Comprehensive Earnings (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Net realized investment gains	$ (437,258)			$ (199,928)			$ (584,925)	$ (268,375)
Income Tax Expense (Benefit)	566,613			(198,850)			985,170	363,164
Net earnings	$ 2,052,192	$ (731,876)	$ 2,239,205	$ (768,963)	$ 586,489	$ 1,578,545	3,559,521	1,396,071
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net earnings							17,048	46,421
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Net realized investment gains							21,580	58,761
Income Tax Expense (Benefit)							$ (4,532)	$ (12,340)