Note 5 - Loan Restructurings - Schedule of Performance of Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Effect of loan modification	$ 11,364	$ 20	$ 11,502	$ 49
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Effect of loan modification	11,128		11,128
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Effect of loan modification	75	20	89
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Effect of loan modification	103		103	49
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Effect of loan modification	58		182
Financial Asset, Not Past Due [Member]
Effect of loan modification	11,364	20	11,378	20
Financial Asset, Not Past Due [Member] \| Accruing [Member]
Effect of loan modification	11,306	20	11,320	20
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member]
Effect of loan modification	58	0	58	0
Financial Asset, Not Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Accruing [Member]
Effect of loan modification	11,128		11,128
Financial Asset, Not Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, Not Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Accruing [Member]
Effect of loan modification	75	20	89	20
Financial Asset, Not Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0	0
Financial Asset, Not Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Accruing [Member]
Effect of loan modification	103		103
Financial Asset, Not Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, Not Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, Not Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Nonaccrual [Member]
Effect of loan modification	58		58
Financial Asset, 30 to 89 Days Past Due [Member]
Effect of loan modification	0	0	0	29
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member]
Effect of loan modification	0	0	0	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member]
Effect of loan modification	0	0	0	29
Financial Asset, 30 to 89 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Accruing [Member]
Effect of loan modification	0	0	0	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0	29
Financial Asset, 30 to 89 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Effect of loan modification	0	0	124	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member]
Effect of loan modification	0	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member]
Effect of loan modification	0	0	124	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Accruing [Member]
Effect of loan modification	0	$ 0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Nonaccrual [Member]
Effect of loan modification				$ 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Nonaccrual [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Accruing [Member]
Effect of loan modification	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Nonaccrual [Member]
Effect of loan modification	$ 0		$ 124