Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans, Collectively evaluated	$ 850,161	$ 797,851
Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	54,579	48,841
Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	220,866	208,786
Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	435,305	400,336
Commercial Non Real Estate Segment [Member]
Loans, Collectively evaluated	57,389	59,963
Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	33,948	32,026
Pass [Member]
Loans, Collectively evaluated	848,768	793,059
Pass [Member] | States Political Subdivisions [Member]
Loans, Collectively evaluated	48,074	47,899
Special Mention [Member]
Loans, Collectively evaluated	0	3,728
Special Mention [Member] | States Political Subdivisions [Member]
Loans, Collectively evaluated	0	0
Classified Excluding Impaired [Member]
Loans, Collectively evaluated	1,393	1,064
Classified Excluding Impaired [Member] | States Political Subdivisions [Member]
Loans, Collectively evaluated	0	0
Construction, 1-4 Family Residential [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	12,538	10,008
Construction, 1-4 Family Residential [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	0	0
Construction, 1-4 Family Residential [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	0	0
Construction, Other [Member] | Pass [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	41,741	38,833
Construction, Other [Member] | Special Mention [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	0	0
Construction, Other [Member] | Classified Excluding Impaired [Member] | Real Estate Construction Portfolio Segment[Member]
Loans, Collectively evaluated	300	0
Equity Lines [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	15,026	13,588
Equity Lines [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Equity Lines [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	29
Closed End First Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	122,187	106,107
Closed End First Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Closed End First Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	461	275
Closed End Junior Liens [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	2,446	2,715
Closed End Junior Liens [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Closed End Junior Liens [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Investor Owned Residential Real Estate [Member] | Pass [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	80,143	85,460
Investor Owned Residential Real Estate [Member] | Special Mention [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Investor Owned Residential Real Estate [Member] | Classified Excluding Impaired [Member] | Consumer Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	603	612
Multifamily Real Estate [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	127,312	106,644
Multifamily Real Estate [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Multifamily Real Estate [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Commercial Real Estate, Owner Occupied [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	126,550	125,605
Commercial Real Estate, Owner Occupied [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Commercial Real Estate, Owner Occupied [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	35
Commercial Real Estate Other [Member] | Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	181,443	164,324
Commercial Real Estate Other [Member] | Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	3,728
Commercial Real Estate Other [Member] | Classified Excluding Impaired [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Commercial and Industrial [Member] | Pass [Member] | Commercial Non Real Estate Segment [Member]
Loans, Collectively evaluated	57,381	59,953
Commercial and Industrial [Member] | Special Mention [Member] | Commercial Non Real Estate Segment [Member]
Loans, Collectively evaluated	0	0
Commercial and Industrial [Member] | Classified Excluding Impaired [Member] | Commercial Non Real Estate Segment [Member]
Loans, Collectively evaluated	8	10
Credit Card Receivable [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	4,597	4,531
Credit Card Receivable [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Credit Card Receivable [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Automobile Loan [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	9,932	10,990
Automobile Loan [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Automobile Loan [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	3	3
Other Consumer Loans [Member] | Pass [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	19,398	16,402
Other Consumer Loans [Member] | Special Mention [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	0	0
Other Consumer Loans [Member] | Classified Excluding Impaired [Member] | Consumer Non Real Estate Portfolio Segment [Member]
Loans, Collectively evaluated	$ 18	$ 100