Note 8 - Loans and Related Allowance for Loan and Lease Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Loans, current balance	$ 4,670	$ 4,859
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans, current balance	74	81
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans, current balance	2,338	2,442
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Loans, current balance	0
Loans, past due	0
Residential Portfolio Segment [Member]
Loans, current balance	1,602	1,577
Loans, past due	0	0
Commercial And Industrial [Member]
Loans, current balance	242	456
Loans, past due	0	0
Home Equity Lines of Credit [Member]
Loans, current balance	247	121
Loans, past due	0	0
Consumer Portfolio Segment [Member]
Loans, current balance	167	182
Loans, past due	0	$ 0
Construction and Other [Member]
Loans, current balance	0
Loans, past due	$ 0