Note 6 - Credit Quality Information - Schedule of Loans Held for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Loans, held for sale	$ 48,824	$ 27,439
Loans, held for sale, allowance	2,048	1,472
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Loans, held for sale	8,937	258
Loans, held for sale, allowance	526	9
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, held for sale	20,566	25,690
Loans, held for sale, allowance	976	1,428
Commercial Real Estate Portfolio Segment [Member] \| Farmland [Member]
Loans, held for sale	0	0
Loans, held for sale, allowance	0	0
Commercial Real Estate Portfolio Segment [Member] \| Other Loans [Member]
Loans, held for sale	3,279	0
Loans, held for sale, allowance	110	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, held for sale	13,697	509
Loans, held for sale, allowance	421	25
Commercial Portfolio Segment [Member] \| Agricultural [Member]
Loans, held for sale	88	88
Loans, held for sale, allowance	5	6
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, held for sale	1,829	894
Loans, held for sale, allowance	7	4
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, held for sale	428	0
Loans, held for sale, allowance	$ 3	$ 0