Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Loans by Delinquency and Nonaccrual Status (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Loans	$ 741,579	$ 820,300
Nonaccrual	2,347	201
Commercial Portfolio Segment [Member]
Loans	113,840	127,276
Nonaccrual	1,429	10
Commercial Real Estate Portfolio Segment [Member]
Loans	489,384	507,900
Nonaccrual	918	191
Construction Portfolio Segment [Member]
Loans	0	5,064
Nonaccrual	0	0
Residential Portfolio Segment [Member]
Loans	7,517	8,274
Nonaccrual	0	0
Consumer Portfolio Segment [Member]
Loans	130,838	171,786
Nonaccrual	0	0
Financial Asset, Not Past Due [Member]
Loans	735,750	813,339
Financial Asset, Not Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	112,164	126,538
Financial Asset, Not Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	487,884	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	7,517	8,274
Financial Asset, Not Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	128,185	166,875
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	2,463	5,314
Financial Asset, 30 to 59 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	96	700
Financial Asset, 30 to 59 Days Past Due [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans	582	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	1,785	3,493
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	722	912
Financial Asset, 60 to 89 Days Past Due [Member] \| Commercial Portfolio Segment [Member]
Loans	151	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	571	884
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	297	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	$ 297	$ 534