Note 5 - Allowance for Credit Losses on Loans and Nonperforming Assets - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for loan losses	$ 10,262	$ 9,094	$ 8,225
Loans, individually evaluated	10,521	10,544
Loans, collectively evaluated	978,092	846,631
Loans	988,613	857,175
Individually Evaluated [Member]
Allowance for loan losses	80	572
Collectively Evaluated [Member]
Allowance for loan losses	10,182	8,522
Real Estate Construction Portfolio Segment [Member]
Allowance for loan losses	348	408	450
Loans, individually evaluated	0	286
Loans, collectively evaluated	50,798	55,093
Loans	50,798	55,379
Real Estate Construction Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Real Estate Construction Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	348	408
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses	3,926	3,162	2,199
Loans, individually evaluated	497	1,183
Loans, collectively evaluated	307,358	240,381
Loans	307,855	241,564
Consumer Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	31	74
Consumer Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	3,895	3,088
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses	4,299	3,576	3,642
Loans, individually evaluated	10,024	8,805
Loans, collectively evaluated	468,054	410,325
Loans	478,078	419,130
Commercial Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	49	367
Commercial Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	4,250	3,209
Commercial Non Real Estate Segment [Member]
Allowance for loan losses	655	682	930
Loans, individually evaluated	0	227
Loans, collectively evaluated	51,844	41,328
Loans	51,844	41,555
Commercial Non Real Estate Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	126
Commercial Non Real Estate Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	655	556
Public Sector and IDA Portfolio Segment [Member]
Allowance for loan losses	336	333	319
Loans, individually evaluated	0	0
Loans, collectively evaluated	57,171	60,551
Loans	57,171	60,551
Public Sector and IDA Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Public Sector and IDA Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	336	333
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses	648	583	506
Loans, individually evaluated	0	43
Loans, collectively evaluated	42,867	38,953
Loans	42,867	38,996
Consumer Non Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	5
Consumer Non Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	648	578
Unallocated Financing Receivables [Member]
Allowance for loan losses	50	350	$ 179
Unallocated Financing Receivables [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0
Unallocated Financing Receivables [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	$ 50	$ 350

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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