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, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	$ 9,892	$ 10,262	$ 9,094
Loans, individually evaluated	8,802	10,521
Loans, collectively evaluated	991,124	978,092
Loans	999,926	988,613
Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	106	80
Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	9,786	10,182
Real Estate Construction Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	335	348	408
Loans, individually evaluated	0	0
Loans, collectively evaluated	40,694	50,798
Loans	40,694	50,798
Real Estate Construction Portfolio Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	0	0
Real Estate Construction Portfolio Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	335	348
Consumer Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	3,804	3,926	3,162
Loans, individually evaluated	465	497
Loans, collectively evaluated	328,188	307,358
Loans	328,653	307,855
Consumer Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	26	31
Consumer Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	3,778	3,895
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	3,784	4,299	3,576
Loans, individually evaluated	8,337	10,024
Loans, collectively evaluated	459,446	468,054
Loans	467,783	478,078
Commercial Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	80	49
Commercial Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	3,704	4,250
Commercial Non Real Estate Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	846	655	682
Loans, individually evaluated	0	0
Loans, collectively evaluated	52,018	51,844
Loans	52,018	51,844
Commercial Non Real Estate Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	0	0
Commercial Non Real Estate Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	846	655
Public Sector and IDA Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	306	336	333
Loans, individually evaluated	0	0
Loans, collectively evaluated	63,677	57,171
Loans	63,677	57,171
Public Sector and IDA Portfolio Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	0	0
Public Sector and IDA Portfolio Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	306	336
Consumer Non Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	767	648	583
Loans, individually evaluated	0	0
Loans, collectively evaluated	47,101	42,867
Loans	47,101	42,867
Consumer Non Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	0	0
Consumer Non Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	767	648
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	50	50	$ 350
Unallocated Financing Receivables [Member] \| Individually Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	0	0
Unallocated Financing Receivables [Member] \| Collectively Evaluated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Less: allowance for credit losses on loans	$ 50	$ 50

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

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