Note 4 - Loans - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Nonaccrual, no allowance	$ 20,533	$ 6,524
Nonaccrual, with allowance	23,808	19,338
Nonaccrual over 89 days and accruing	295	353
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Nonaccrual, no allowance	4,196	1,346
Nonaccrual, with allowance	2,580	207
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Nonaccrual, no allowance	2,227	2,408
Nonaccrual, with allowance	10,576	10,776
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Nonaccrual, no allowance	0	0
Nonaccrual, with allowance	1,813	1,917
Nonaccrual over 89 days and accruing	0	0
Commercial Real Estate Portfolio Segment [Member] \| Other Loans [Member]
Nonaccrual, no allowance	491	1,093
Nonaccrual, with allowance	1,041	0
Nonaccrual over 89 days and accruing	0	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Nonaccrual, no allowance	11,454	0
Nonaccrual, with allowance	3,651	2,778
Nonaccrual over 89 days and accruing	0	82
Commercial Portfolio Segment [Member] \| Agricultural [Member]
Nonaccrual, no allowance	0	0
Nonaccrual, with allowance	178	159
Nonaccrual over 89 days and accruing	0	0
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Nonaccrual, no allowance	1,651	1,095
Nonaccrual, with allowance	2,543	2,329
Nonaccrual over 89 days and accruing	295	271
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Nonaccrual, no allowance	487	424
Nonaccrual, with allowance	802	689
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Nonaccrual, no allowance	0	97
Nonaccrual, with allowance	97	0
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Indirect Loans [Member]
Nonaccrual, no allowance	27	61
Nonaccrual, with allowance	503	462
Nonaccrual over 89 days and accruing	0	0
Consumer Portfolio Segment [Member] \| Direct Loans [Member]
Nonaccrual, no allowance	0	0
Nonaccrual, with allowance	24	21
Nonaccrual over 89 days and accruing	$ 0	$ 0