Note 1 - Summary of Significant Accounting Policies - Reclassifications from Accumulated Other Comprehensive Earnings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net realized investment gains	$ (874,470)	$ (982,547)
Total income tax benefit	(140,166)	815,102
Net (loss) earnings	(581,662)	4,142,779
Reclassification out of Accumulated Other Comprehensive Income [Member]
Net (loss) earnings	8,540	(188,282)
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Net realized investment gains	10,810	(238,332)
Total income tax benefit	$ (2,270)	$ 50,050