Note 2 - Investments (Details Textual)	3 Months Ended	9 Months Ended
Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Proceeds from Sale, Maturity and Collection of Investments	$ 4,807,697	$ 4,666,065	$ 17,538,090	$ 10,432,378
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	184		184
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	$ 3,502,161		$ 3,502,161		$ 4,927,710
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans	$ 0		$ 0		0
Fixed Income Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	99		99
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	60		60
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	$ 751,215		$ 751,215		1,164,216
Term Loans [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	14		14
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss	$ 12,117		$ 12,117		$ 286,770
Preferred Stock [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	11		11

Amount of principal due on delinquent mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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