Note 4 - Loans - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Nonaccrual, no allowance	$ 3,058	$ 2,789
Nonaccrual, with allowance	24,761	17,814
Nonaccrual over 89 days and accruing	0	615
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Nonaccrual, no allowance	195	0
Nonaccrual, with allowance	401	937
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Nonaccrual, no allowance	1,976	0
Nonaccrual, with allowance	16,702	8,105
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Nonaccrual, no allowance	0	1,757
Nonaccrual, with allowance	50	3
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Other Loans [Member]
Nonaccrual, no allowance	0	0
Nonaccrual, with allowance	1,082	0
Nonaccrual over 89 days and accruing	0	525
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Nonaccrual, no allowance	182	145
Nonaccrual, with allowance	3,231	3,713
Nonaccrual over 89 days and accruing	0	0
Commercial Portfolio Segment [Member] \| Agricultural [Member]
Nonaccrual, no allowance	0	177
Nonaccrual, with allowance	256	183
Nonaccrual over 89 days and accruing	0	0
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Nonaccrual, no allowance	664	513
Nonaccrual, with allowance	2,019	3,967
Nonaccrual over 89 days and accruing	0	90
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Nonaccrual, no allowance	30	94
Nonaccrual, with allowance	441	409
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Nonaccrual, no allowance	0	0
Nonaccrual, with allowance	0	0
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Indirect Loans [Member]
Nonaccrual, no allowance	11	37
Nonaccrual, with allowance	561	463
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Direct Loans [Member]
Nonaccrual, no allowance	0	66
Nonaccrual, with allowance	18	34
Nonaccrual over 89 days and accruing	$ 0	$ 0