Note 7 - Offsetting Assets and Liabilities - Offsetting Assets (Details) - Assets [Member] - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Gross amount, recognized	$ 29,319	$ 6,420
Gross Amount, offset	0	0
Net Amount	29,319	6,420
Gross Amount, not recognized	0	0
Gross amount, not offset	0	0
Net amount, after deduction	29,319	6,420
Interest Rate Swap [Member]
Gross amount, recognized	29,214	6,348
Gross Amount, offset	0	0
Net Amount	29,214	6,348
Gross Amount, not recognized	0	0
Gross amount, not offset	0	0
Net amount, after deduction	29,214	6,348
Dual Digital Option [Member]
Gross amount, recognized	105
Gross Amount, offset	0
Net Amount	105
Gross Amount, not recognized	0
Gross amount, not offset	0
Net amount, after deduction	$ 105
Payer Swaptions [Member]
Gross amount, recognized		72
Gross Amount, offset		0
Net Amount		72
Gross Amount, not recognized		0
Gross amount, not offset		0
Net amount, after deduction		$ 72