Note 6 - Credit Quality Information - Schedule of Loans Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Loans, held for sale	$ 67,903	$ 27,439
Loans, held for sale, allowance	5,157	1,472
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Loans, held for sale	10,508	258
Loans, held for sale, allowance	715	9
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, held for sale	35,942	25,690
Loans, held for sale, allowance	3,778	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	1,410	0
Loans, held for sale, allowance	43	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, held for sale	17,263	509
Loans, held for sale, allowance	600	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	2,087	894
Loans, held for sale, allowance	10	4
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, held for sale	605	0
Loans, held for sale, allowance	$ 6	$ 0