Note 1 - Summary of Significant Accounting Policies - Reclassifications from Accumulated Other Comprehensive Earnings (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net realized investment (gains) losses	$ (150,686)	$ 75,565
Income Tax Expense (Benefit)	596,201	405,520
Net earnings	2,239,205	1,578,545
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net earnings	(923)	32,011
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Net realized investment (gains) losses	(1,167)	40,520
Income Tax Expense (Benefit)	$ 244	$ (8,509)