Note 2 - Loans and Allowance for Credit Losses - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Allowance for loan losses	$ 9,055	$ 9,094	$ 10,650	$ 8,225
Loans, individually evaluated	10,565	10,544
Loans, collectively evaluated	853,526	846,631
Loans	864,091	857,175
Individually Evaluated [Member]
Allowance for loan losses	568	572
Collectively Evaluated [Member]
Allowance for loan losses	8,487	8,522
Real Estate Construction Portfolio Segment[Member]
Allowance for loan losses	349	408	451	450
Loans, individually evaluated	280	286
Loans, collectively evaluated	61,206	55,093
Loans	61,486	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	349	408
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses	2,968	3,162	3,302	2,199
Loans, individually evaluated	1,237	1,183
Loans, collectively evaluated	243,709	240,381
Loans	244,946	241,564
Consumer Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	74	74
Consumer Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	2,894	3,088
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses	3,856	3,576	4,374	3,642
Loans, individually evaluated	8,777	8,805
Loans, collectively evaluated	405,838	410,325
Loans	414,615	419,130
Commercial Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	362	367
Commercial Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	3,494	3,209
Commercial Non Real Estate Segment [Member]
Allowance for loan losses	647	682	1,194	930
Loans, individually evaluated	237	227
Loans, collectively evaluated	41,598	41,328
Loans	41,835	41,555
Commercial Non Real Estate Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	129	126
Commercial Non Real Estate Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	518	556
Public Sector and IDA Portfolio Segment[Member]
Allowance for loan losses	321	333	294	319
Loans, individually evaluated	0	0
Loans, collectively evaluated	59,742	60,551
Loans	59,742	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	321	333
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses	533	583	555	506
Loans, individually evaluated	34	43
Loans, collectively evaluated	41,433	38,953
Loans	41,467	38,996
Consumer Non Real Estate Portfolio Segment [Member] \| Individually Evaluated [Member]
Allowance for loan losses	3	5
Consumer Non Real Estate Portfolio Segment [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	530	578
Unallocated Financing Receivables [Member]
Allowance for loan losses	381	350	$ 480	$ 179
Unallocated Financing Receivables [Member] \| Individually Evaluated [Member]
Allowance for loan losses	0	0
Unallocated Financing Receivables [Member] \| Collectively Evaluated [Member]
Allowance for loan losses	$ 381	$ 350

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

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