Note 2 - Investments (Details Textual)	3 Months Ended	12 Months Ended
Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Proceeds from Sale, Maturity and Collection of Investments, Total	$ 3,042,470	$ 360,187
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	129		76
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	$ 1,409,494		$ 283,345
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total	0		0
Mortgage Loans, Non-accrued Status	0		0
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans	0		0
Allowance for Loan and Lease Losses, Real Estate	0		$ 0
Debt and Equity Securities, Unrealized Gain (Loss), Total	449,795	32,918
Debt and Equity Securities, Realized Gain (Loss), Total	(641)	52,397
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total	$ (282,217)	$ (202,647)
Fixed Income Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	54		29
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	60		41
Preferred Stock [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	15		6

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Paragraph Column H
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings and other comprehensive loss (OCI).

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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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