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Note 7 - Long-term Debt (Details Textual) - USD ($)
Oct. 31, 2024
Jun. 30, 2023
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Oct. 30, 2019
Junior Subordinated Debt Securities [Member] | Bimini Capital Trust II (“BCTII”) [Member] | Bimini Capital Trust Junior Subordinated Note [Member]            
Long-Term Debt, Gross     $ 26,800,000 $ 26,800,000    
Debt Instrument, Interest Rate, Effective Percentage     8.06% 8.12%    
Junior Subordinated Debt Securities [Member] | Bimini Capital Trust II (“BCTII”) [Member] | Bimini Capital Trust Junior Subordinated Note [Member] | CME Term SOFR [Member]            
Debt Instrument, Basis Spread on Variable Rate   0.26161%        
Debt Instrument, Interest Rate, Effective Percentage   3.50%        
Notes Payable to Banks [Member]            
Debt Instrument, Face Amount           $ 680,000
Debt Instrument, Interest Rate, Stated Percentage 7.37%         4.89%
Notes Payable to Banks [Member] | US Treasury Securities Interest Rate [Member]            
Debt Instrument, Basis Spread on Variable Rate 3.25%          
Bimini Capital Trust II (“BCTII”) [Member]            
Noncontrolling Interest, Ownership Percentage by Parent         100.00%