Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for loan losses, Individually evaluated for impairment	$ 0	$ 0
Allowance for loan losses, Collectively evaluated for impairment	8,225	7,674
Allowance for loan losses	8,225	7,674	$ 8,481
Loans, Individually evaluated for impairment	3,032	5,878
Loans, Collectively evaluated	850,161	797,851
Loans	853,193	803,729
Real Estate Construction Portfolio Segment[Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	450	422
Allowance for loan losses	450	422	503
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated	54,579	48,841
Loans	54,579	48,841
Consumer Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	2,199	1,930
Allowance for loan losses	2,199	1,930	2,165
Loans, Individually evaluated for impairment	186	191
Loans, Collectively evaluated	220,866	208,786
Loans	221,052	208,977
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	3,642	3,121
Allowance for loan losses	3,642	3,121	3,853
Loans, Individually evaluated for impairment	2,583	5,386
Loans, Collectively evaluated	435,305	400,336
Loans	437,888	405,722
Commercial Non Real Estate Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	930	1,099
Allowance for loan losses	930	1,099	670
Loans, Individually evaluated for impairment	263	301
Loans, Collectively evaluated	57,389	59,963
Loans	57,652	60,264
Public Sector and IDA Portfolio Segment[Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	319	297
Allowance for loan losses	319	297	339
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated	48,074	47,899
Loans	48,074	47,899
Consumer Non Real Estate Portfolio Segment [Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	506	444
Allowance for loan losses	506	444	555
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated	33,948	32,026
Loans	33,948	32,026
Unallocated Financing Receivables [Member]
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	179	361
Allowance for loan losses	179	361	$ 396
Loans, Individually evaluated for impairment	0	0
Loans, Collectively evaluated	0	0
Loans	$ 0	$ 0

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Name Accounting Standards Codification
-Topic 310
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-Section 50
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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