Note 2 - Investments (Details Textual)	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Proceeds from Sale, Maturity and Collection of Investments	$ 3,580,556	$ 1,736,118
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	214
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 4,871,684		$ 4,927,710
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans	0		0
Debt and Equity Securities, Unrealized Gain (Loss)	96,321	246,126
Debt and Equity Securities, Realized Gain (Loss)	(35,828)	185,085
Financing Receivable, Credit Loss, Expense (Reversal)	(0)	(13,225)
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	$ 79,929	$ (97,334)
Fixed Income Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	120
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	69
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 922,423		1,164,216
Term Loans [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	11
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 290,534		$ 286,770
Preferred Stock [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	14