Note 3 - Loans and Allowance for Credit Losses - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Allowance for loan losses	$ 10,579	$ 10,262	$ 10,328	$ 9,094
Loans, individually evaluated	10,699	10,521
Loans, collectively evaluated	1,006,246	978,092
Loans	1,016,945	988,613
Individually Evaluated [Member]
Allowance for loan losses	90	80
Collectively Evaluated [Member]
Allowance for loan losses	10,489	10,182
Real Estate Construction Portfolio Segment [Member]
Allowance for loan losses	425	348	461	408
Loans, individually evaluated	0	0
Loans, collectively evaluated	46,381	50,798
Loans	46,381	50,798
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	425	348
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses	3,888	3,926	3,956	3,162
Loans, individually evaluated	473	497
Loans, collectively evaluated	324,124	307,358
Loans	324,597	307,855
Consumer Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	27	31
Consumer Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	3,861	3,895
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses	4,360	4,299	4,261	3,576
Loans, individually evaluated	10,226	10,024
Loans, collectively evaluated	480,742	468,054
Loans	490,968	478,078
Commercial Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	63	49
Commercial Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	4,297	4,250
Commercial Non Real Estate Segment [Member]
Allowance for loan losses	760	655	659	682
Loans, individually evaluated	0	0
Loans, collectively evaluated	53,532	51,844
Loans	53,532	51,844
Commercial Non Real Estate Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Commercial Non Real Estate Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	760	655
Public Sector and IDA Portfolio Segment [Member]
Allowance for loan losses	307	336	338	333
Loans, individually evaluated	0	0
Loans, collectively evaluated	54,332	57,171
Loans	54,332	57,171
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	307	336
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses	792	648	570	583
Loans, individually evaluated	0	0
Loans, collectively evaluated	47,135	42,867
Loans	47,135	42,867
Consumer Non Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Consumer Non Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	792	648
Unallocated Financing Receivables [Member]
Allowance for loan losses	47	50	$ 83	$ 350
Unallocated Financing Receivables [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Unallocated Financing Receivables [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	$ 47	$ 50

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

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