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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Assets $ 721,354,111   $ 721,354,111   $ 728,345,729
Liabilities 173,429,102   173,429,102   165,626,276
Other Investment Income (Loss) $ (3,233,467) $ 8,428,017 (12,806,569) $ 15,671,077  
Ceded Premiums Earned     $ 4,140,742 2,453,929  
Stock Issued       13,399,161  
Transfer from Investments       $ 1,474,292  
Minimum [Member]          
Lessor, Operating Lease, Term of Contract (Month) 1 month   1 month    
Maximum [Member]          
Lessor, Operating Lease, Term of Contract (Month) 3 years   3 years    
The 24th Street Funds, Special Purpose Entities [Member]          
Investment Owned, Fair Value $ 30,500,000   $ 30,500,000   46,900,000
Other Investment Income (Loss)     6,600,000    
Fund Distributions     4,700,000    
Variable Interest Entity, Primary Beneficiary [Member]          
Assets 32,000,000   32,000,000   48,700,000
Liabilities $ 2,600   $ 2,600   $ 27,000