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, 2021	Dec. 31, 2020
Loans	$ 1,010,282	$ 1,104,085
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	110,883	103,121
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	310,222	309,424
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	30,762	39,562
Residential Portfolio Segment [Member]
Loans	232,020	233,995
Commercial And Industrial [Member]
Loans	163,052	232,044
Home Equity Lines of Credit [Member]
Loans	105,450	112,543
Construction and Other [Member]
Loans	49,378	63,573
Consumer Portfolio Segment [Member]
Loans	8,515	9,823
Pass [Member]
Loans	934,615	1,030,290
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	104,318	93,939
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	248,468	258,974
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	30,762	39,562
Pass [Member] | Residential Portfolio Segment [Member]
Loans	228,867	230,944
Pass [Member] | Commercial And Industrial [Member]
Loans	160,275	227,765
Pass [Member] | Home Equity Lines of Credit [Member]
Loans	104,376	111,208
Pass [Member] | Construction and Other [Member]
Loans	49,034	58,082
Pass [Member] | Consumer Portfolio Segment [Member]
Loans	8,515	9,816
Special Mention [Member]
Loans	11,876	10,132
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	1,577	7,084
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	9,021	983
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	0	0
Special Mention [Member] | Residential Portfolio Segment [Member]
Loans	156	265
Special Mention [Member] | Commercial And Industrial [Member]
Loans	778	1,800
Special Mention [Member] | Home Equity Lines of Credit [Member]
Loans	0	0
Special Mention [Member] | Construction and Other [Member]
Loans	344	0
Special Mention [Member] | Consumer Portfolio Segment [Member]
Loans	0	0
Substandard [Member]
Loans	63,791	63,663
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans	4,988	2,098
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans	52,733	49,467
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans	0	0
Substandard [Member] | Residential Portfolio Segment [Member]
Loans	2,997	2,786
Substandard [Member] | Commercial And Industrial [Member]
Loans	1,999	2,479
Substandard [Member] | Home Equity Lines of Credit [Member]
Loans	1,074	1,335
Substandard [Member] | Construction and Other [Member]
Loans	0	5,491
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans	0	7
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