Note 8 - Loans and Related Allowance for Loan and Lease Losses - Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Total loans	$ 995,195	$ 981,691
Financial Asset, Not Past Due [Member]
Total loans	992,898	977,994
Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	1,555	2,276
Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	163	190
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	579	1,231
Financial Asset, Past Due [Member]
Total loans	2,297	3,697
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Total loans	120,912	111,470
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Total loans	120,885	111,257
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	27	81
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	132
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Past Due [Member]
Total loans	27	213
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Total loans	285,419	283,618
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Total loans	285,258	282,365
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	0	880
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	161	373
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Past Due [Member]
Total loans	161	1,253
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Total loans	38,063	31,189
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Not Past Due [Member]
Total loans	38,063	31,189
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Past Due [Member]
Total loans	0	0
Residential Portfolio Segment [Member]
Total loans	247,612	240,089
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	246,058	238,483
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	1,179	1,187
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	375	419
Residential Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Total loans	1,554	1,606
Commercial And Industrial [Member]
Total loans	146,987	148,812
Commercial And Industrial [Member] | Financial Asset, Not Past Due [Member]
Total loans	146,805	148,437
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	41	112
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	127	0
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	14	263
Commercial And Industrial [Member] | Financial Asset, Past Due [Member]
Total loans	182	375
Home Equity Lines of Credit [Member]
Total loans	114,344	104,355
Home Equity Lines of Credit [Member] | Financial Asset, Not Past Due [Member]
Total loans	114,156	104,316
Home Equity Lines of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	159	0
Home Equity Lines of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	39
Home Equity Lines of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	29	0
Home Equity Lines of Credit [Member] | Financial Asset, Past Due [Member]
Total loans	188	39
Construction and Other [Member]
Total loans	33,748	54,148
Construction and Other [Member] | Financial Asset, Not Past Due [Member]
Total loans	33,748	54,148
Construction and Other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	0	0
Construction and Other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Construction and Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Construction and Other [Member] | Financial Asset, Past Due [Member]
Total loans	0	0
Consumer Portfolio Segment [Member]
Total loans	8,110	8,010
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	7,925	7,799
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	149	16
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	36	19
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	176
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Total loans	$ 185	$ 211