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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Assets $ 730,840,415   $ 728,345,729
Liabilities 171,078,674   165,626,276
Other Investment Income (Loss) 736,010 $ 7,788,445  
Ceded Premiums Earned $ 995,427 878,017  
Minimum [Member]      
Lessor, Operating Lease, Term of Contract (Year) 1 year    
Maximum [Member]      
Lessor, Operating Lease, Term of Contract (Year) 3 years    
The 24th Street Funds, Special Purpose Entities [Member]      
Investment Owned, Fair Value $ 42,200,000   46,900,000
Other Investment Income (Loss) 2,000,000    
Fund Distributions 1,700,000    
Variable Interest Entity, Primary Beneficiary [Member]      
Assets 43,200,000   $ 48,700,000
Liabilities $ 53,000 $ 27,000