Note 7 - Offsetting Assets and Liabilities - Offsetting Assets (Details) - Assets [Member] $ in Thousands	Dec. 31, 2024 USD ($)
Gross amount, recognized	$ 9,277
Gross Amount, offset	0
Net Amount	9,277
Gross Amount, not recognized	0
Gross amount, not offset	(4,282)
Net amount, after deduction	4,995
Interest Rate Swap [Member]
Gross amount, recognized	4,574
Gross Amount, offset	0
Net Amount	4,574
Gross Amount, not recognized	0
Gross amount, not offset	0
Net amount, after deduction	4,574
Payer Swaptions [Member]
Gross amount, recognized	4,703
Gross Amount, offset	0
Net Amount	4,703
Gross Amount, not recognized	0
Gross amount, not offset	(4,282)
Net amount, after deduction	$ 421