Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Loans by Delinquency and Nonaccrual Status (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loans	$ 748,264	$ 820,300
Nonaccrual	4,553	201
Commercial Portfolio Segment [Member]
Loans	111,160	127,276
Nonaccrual	3,635	10
Commercial Real Estate Portfolio Segment [Member]
Loans	486,463	507,900
Nonaccrual	918	191
Construction Portfolio Segment [Member]
Loans	0	5,064
Nonaccrual	0	0
Residential Portfolio Segment [Member]
Loans	7,709	8,274
Nonaccrual	0	0
Consumer Portfolio Segment [Member]
Loans	142,932	171,786
Nonaccrual	0	0
Financial Asset, Not Past Due [Member]
Loans	739,014	813,339
Financial Asset, Not Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	107,035	126,538
Financial Asset, Not Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	484,829	506,588
Financial Asset, Not Past Due [Member] \| Construction Portfolio Segment [Member]
Loans	0	5,064
Financial Asset, Not Past Due [Member] \| Residential Portfolio Segment [Member]
Loans	7,709	8,274
Financial Asset, Not Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	139,441	166,875
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3,759	5,314
Financial Asset, 30 to 59 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	440	700
Financial Asset, 30 to 59 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	716	1,121
Financial Asset, 30 to 59 Days Past Due [Member] \| Construction Portfolio Segment [Member]
Loans	0	0
Financial Asset, 30 to 59 Days Past Due [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Financial Asset, 30 to 59 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	2,603	3,493
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	527	912
Financial Asset, 60 to 89 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	50	28
Financial Asset, 60 to 89 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] \| Construction Portfolio Segment [Member]
Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Financial Asset, 60 to 89 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	477	884
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	411	534
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Construction Portfolio Segment [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Residential Portfolio Segment [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	$ 411	$ 534