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Note 2 - Investments (Details Textual)	9 Months Ended
Note 2 - Investments (Details Textual)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jan. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Nov. 30, 2021 USD ($)	Oct. 02, 24
Debt Securities, Available-for-Sale	$ 114,743,833		$ 110,955,697
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	7,159,132		8,974,518
Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain	534,212		1,595,251	$ 837,147		$ 268,677
Other Investments	13,958,375		8,898,409
Financing Receivable, Allowance for Credit Loss	310,000				$ 39,000
Investment, Funding Available for Future Investment	$ 8,050,866
Investment, Variable Interest Rate, Type [Extensible Enumeration]	Prime Rate [Member]
Federal Home Loan Bank of Chicago [Member]
Other Investments	$ 425,000		425,000
Notes Receivable [Member]
Other Investments	10,480,540		5,495,979
Privately Held Investments [Member]
Other Investments	2,543,637		2,197,232
Funds at Lloyds [Member]
Other Investments	819,198		819,198
Limited Partnership [Member]
Other Investments	2,078,607		1,734,622
SAFE Investment [Member]
Other Investments	250,000		250,000
Stocks [Member]
Other Investments	215,030		212,610
Private Investment Fund [Member]
Other Investments		$ 3					$ 10,000,000
Investment Request Amount	1,949,134		1,949,134
Notes Issued on July 30, 2019 [Member]
Financing Receivable, Allowance for Credit Loss	$ 310,000
Loans Receivable, Basis Spread on Variable Rate	0.25%
Notes Issued on July 30, 2019 [Member] \| Minimum [Member]
Financing Receivable, Interest Rate	2.00%
Loans Receivable, Basis Spread on Variable Rate		4.00%
Notes Issued on July 30, 2019 [Member] \| Maximum [Member]
Financing Receivable, Interest Rate	9.00%
Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale	$ 8,266,499		8,462,540
Residential Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale	33,749,479		32,928,128
Commercial Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale	5,125,243		5,629,659
Fixed Income Securities [Member]
Debt Securities, Available-for-Sale, Allowance for Credit Loss	$ 0		$ 0
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	184							184
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions	178
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	$ 7,159,132