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Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Loans by Delinquency and Nonaccrual Status (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Loans	$ 771,030	$ 820,300
Nonaccrual	0	201
Commercial Portfolio Segment [Member]
Loans	111,888	127,276
Nonaccrual	0	10
Commercial Real Estate Portfolio Segment [Member]
Loans	489,612	507,900
Nonaccrual	0	191
Construction Portfolio Segment [Member]
Loans	5,064	5,064	$ 5,064
Nonaccrual	0	0
Residential Portfolio Segment [Member]
Loans	8,061	8,274
Nonaccrual	0	0
Consumer Portfolio Segment [Member]
Loans	156,405	171,786	171,786
Nonaccrual	0	0	0
Financial Asset, Not Past Due [Member]
Loans	765,986	813,339
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member]
Loans	111,583	126,538
Financial Asset, Not Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	488,508	506,588
Financial Asset, Not Past Due [Member] | Construction Portfolio Segment [Member]
Loans	5,064	5,064
Financial Asset, Not Past Due [Member] | Residential Portfolio Segment [Member]
Loans	7,865	8,274
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member]
Loans	152,966	166,875	166,875
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	4,148	5,314
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Loans	305	700
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans	1,104	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	196	0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Loans	2,543	3,493	3,493
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	619	912
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member]
Loans	0	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	619	884	884
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	277	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	$ 277	$ 534	$ 534

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