Note 8 - Loans and Related Allowance for Loan and Lease Losses - Classes of the Loan Portfolio Summarized by Credit Quality (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans	$ 995,195	$ 981,691
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	120,912	111,470
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	285,419	283,618
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	38,063	31,189
Residential Portfolio Segment [Member]
Loans	247,612	240,089
Commercial And Industrial [Member]
Loans	146,987	148,812
Home Equity Lines of Credit [Member]
Loans	114,344	104,355
Construction and Other [Member]
Loans	33,748	54,148
Consumer Portfolio Segment [Member]
Loans	8,110	8,010
Pass [Member]
Loans	931,742	912,229
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	111,173	104,217
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	242,133	230,672
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	38,063	31,189
Pass [Member] | Residential Portfolio Segment [Member]
Loans	245,278	237,132
Pass [Member] | Commercial And Industrial [Member]
Loans	140,328	143,911
Pass [Member] | Home Equity Lines of Credit [Member]
Loans	113,337	103,296
Pass [Member] | Construction and Other [Member]
Loans	33,359	53,807
Pass [Member] | Consumer Portfolio Segment [Member]
Loans	8,071	8,005
Special Mention [Member]
Loans	5,339	8,527
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	1,164	2,400
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	215	3,038
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	0	0
Special Mention [Member] | Residential Portfolio Segment [Member]
Loans	0	0
Special Mention [Member] | Commercial And Industrial [Member]
Loans	3,641	2,748
Special Mention [Member] | Home Equity Lines of Credit [Member]
Loans	0	0
Special Mention [Member] | Construction and Other [Member]
Loans	319	341
Special Mention [Member] | Consumer Portfolio Segment [Member]
Loans	0	0
Substandard [Member]
Loans	58,114	60,935
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	8,575	4,853
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	43,071	49,908
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	0	0
Substandard [Member] | Residential Portfolio Segment [Member]
Loans	2,334	2,957
Substandard [Member] | Commercial And Industrial [Member]
Loans	3,018	2,153
Substandard [Member] | Home Equity Lines of Credit [Member]
Loans	1,007	1,059
Substandard [Member] | Construction and Other [Member]
Loans	70	0
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans	39	5
Doubtful [Member]
Loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	0	0
Doubtful [Member] | Residential Portfolio Segment [Member]
Loans	0	0
Doubtful [Member] | Commercial And Industrial [Member]
Loans	0	0
Doubtful [Member] | Home Equity Lines of Credit [Member]
Loans	0	0
Doubtful [Member] | Construction and Other [Member]
Loans	0	0
Doubtful [Member] | Consumer Portfolio Segment [Member]
Loans	$ 0	$ 0