Note 2 - Investments (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Proceeds from Sale, Maturity and Collection of Investments	$ 4,666,065	$ 939,113	$ 10,432,378	$ 5,109,627
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	238		238		230
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 7,210,148		$ 7,210,148		$ 5,704,466
Mortgage Loans, Non-accrued Status	0		0		0
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans	0		0		$ 0
Debt and Equity Securities, Unrealized Gain (Loss)	(45,317)	(240,450)	311,127	(1,704,079)
Debt and Equity Securities, Realized Gain (Loss)	(140,204)	(15,911)	(103,325)	(15,288)
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net	$ (72,031)	$ (399,134)	$ 425,122	$ (1,090,435)
Fixed Income Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	136		136		131
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	78		78		73
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 1,526,370		$ 1,526,370		$ 1,074,520
Term Loans [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	9		9		10
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 298,775		$ 298,775		$ 146,395
Preferred Stock [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	15		15		16