Note 7 - Offsetting Assets and Liabilities - Offsetting Assets (Details) - Assets [Member] - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Gross amount, recognized	$ 137,865	$ 9,277
Gross Amount, offset	0	0
Net Amount	137,865	9,277
Gross Amount, not recognized	(128,613)	0
Gross amount, not offset	(360)	(4,282)
Net amount, after deduction	8,892	4,995
Interest Rate Swap [Member]
Gross amount, recognized	8,237	4,574
Gross Amount, offset	0	0
Net Amount	8,237	4,574
Gross Amount, not recognized	0	0
Gross amount, not offset	0	0
Net amount, after deduction	8,237	4,574
TBA Contracts [Member]
Gross amount, recognized	1,015	4,703
Gross Amount, offset	0	0
Net Amount	1,015	4,703
Gross Amount, not recognized	0	0
Gross amount, not offset	(360)	(4,282)
Net amount, after deduction	655	$ 421
Reverse Repurchase Agreement [Member]
Gross amount, recognized	128,613
Gross Amount, offset	0
Net Amount	128,613
Gross Amount, not recognized	(128,613)
Gross amount, not offset	0
Net amount, after deduction	$ 0