Note 3 - Loans and Allowance for Credit Losses on Loans - Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Non-accrual with no allowance	$ 1,931	$ 9,042
Non-accrual loans	15,865	21,727
Troubled Debt Restructurings, excluding non-accrual loans	283	487
Home Equity Line of Credit [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	5	70
Troubled Debt Restructurings, excluding non-accrual loans	0	91
Credit Cards [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings, excluding non-accrual loans	188	170
Commercial Real Estate Portfolio Segment [Member]
Non-accrual with no allowance	1,145	4,843
Non-accrual loans	7,049	6,452
Troubled Debt Restructurings, excluding non-accrual loans	0	73
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance	0	4,409
Non-accrual loans	4,947	5,221
Troubled Debt Restructurings, excluding non-accrual loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance	1,145	434
Non-accrual loans	2,102	1,231
Troubled Debt Restructurings, excluding non-accrual loans	0	73
Commercial and Industrial Portfolio Segment [Member]
Non-accrual with no allowance	302	3,828
Non-accrual loans	1,263	4,903
Troubled Debt Restructurings, excluding non-accrual loans	95	114
Commercial and Industrial Portfolio Segment [Member] | Term [Member]
Non-accrual with no allowance	302	3,828
Non-accrual loans	1,263	4,903
Troubled Debt Restructurings, excluding non-accrual loans	95	95
Commercial and Industrial Portfolio Segment [Member] | Lines of Credit [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings, excluding non-accrual loans	0	19
Residential Real Estate Portfolio Segment [Member]
Non-accrual with no allowance	484	371
Non-accrual loans	7,071	9,619
Troubled Debt Restructurings, excluding non-accrual loans	0	39
Residential Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	1,609	2,451
Troubled Debt Restructurings, excluding non-accrual loans	0	39
Residential Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Non-accrual with no allowance	484	371
Non-accrual loans	5,462	7,168
Troubled Debt Restructurings, excluding non-accrual loans	0	0
Construction and Development [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	80	311
Troubled Debt Restructurings, excluding non-accrual loans	0	0
Consumer Portfolio Segment [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	397	372
Troubled Debt Restructurings, excluding non-accrual loans	0	0
Finance Leases Portfolio Segment [Member]
Non-accrual with no allowance	0	0
Non-accrual loans	0	0
Troubled Debt Restructurings, excluding non-accrual loans	$ 0	$ 0