Note 5 - Loan Restructurings - Schedule of Performance of Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Loans, modified	$ 201	$ 1,380	$ 7,378	$ 12,882
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified		0	7,098	11,128
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	201	0	280	103
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		277		366
Other Loans [Member]
Loans, modified		1,103		1,103
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, modified		0		182
Financial Asset, Not Past Due [Member]
Loans, modified	201	1,380	7,340	12,779
Financial Asset, Not Past Due [Member] \| Other Loans [Member]
Loans, modified		1,103
Financial Asset, Not Past Due [Member] \| Accruing [Member]
Loans, modified	11	0	2,829	11,345
Financial Asset, Not Past Due [Member] \| Accruing [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0	0	2,777	11,154
Financial Asset, Not Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	11	0	52	103
Financial Asset, Not Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		0		88
Financial Asset, Not Past Due [Member] \| Accruing [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, modified		0
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member]
Loans, modified	190	1,380	4,511	1,434
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0		4,321
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	190		190
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		277		277
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member] \| Commercial Portfolio Segment [Member] \| Other Loans [Member]
Loans, modified				1,103
Financial Asset, Not Past Due [Member] \| Nonaccrual [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, modified				54
Financial Asset, 30 to 89 Days Past Due [Member]
Loans, modified	0	0	38	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member]
Loans, modified	0	0	0	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0	0	0	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	0	0	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member] \| Other Loans [Member]
Loans, modified		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Accruing [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, modified				0
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member]
Loans, modified	0	0	38	0
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	0		38
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		0		0
Financial Asset, 30 to 89 Days Past Due [Member] \| Nonaccrual [Member] \| Commercial Portfolio Segment [Member] \| Other Loans [Member]
Loans, modified				0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans, modified	0	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member]
Loans, modified	0	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Accruing [Member] \| Other Loans [Member]
Loans, modified		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member]
Loans, modified	0	0	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member] \| Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans, modified	0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans, modified	$ 0		$ 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member] \| Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans, modified		$ 0		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member] \| Commercial Portfolio Segment [Member] \| Other Loans [Member]
Loans, modified				0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Nonaccrual [Member] \| Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans, modified				$ 0