Note 7 - Long-term Debt (Details Textual) - USD ($)				6 Months Ended
	Oct. 31, 2024	Jun. 30, 2023	Oct. 30, 2019	Jun. 30, 2023	Mar. 31, 2024	Dec. 31, 2023
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					9.09%
Junior Subordinated Debt Securities [Member] | Bimini Capital Trust II (“BCTII”) [Member] | Bimini Capital Trust Junior Subordinated Note [Member] | London Interbank Offered Rate (LIBOR) 1 [Member]
Debt Instrument, Basis Spread on Variable Rate				3.50%
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, Coupon Spread on Variable Rate		3.50%
Notes Payable to Banks [Member]
Debt Instrument, Face Amount			$ 680,000
Debt Instrument, Periodic Payment, Total			$ 5,000
Debt Instrument, Interest Rate, Stated Percentage			4.89%
Notes Payable to Banks [Member] | US Treasury Securities Interest Rate [Member] | Forecast [Member]
Debt Instrument, Basis Spread on Variable Rate	3.25%
Bimini Capital Trust II (“BCTII”) [Member]
Noncontrolling Interest, Ownership Percentage by Parent					100.00%