Note 8 - Loans and Related Allowance for Loan and Lease Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Loans, current balance	$ 3,692	$ 4,859
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Loans, current balance	71	81
Loans, past due	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Loans, current balance	1,450	2,442
Loans, past due	0	0
Residential Portfolio Segment [Member]
Loans, current balance	1,568	1,577
Loans, past due	0	0
Commercial And Industrial [Member]
Loans, current balance	197	456
Loans, past due	0	0
Home Equity Lines of Credit [Member]
Loans, current balance	131	121
Loans, past due	0	0
Construction and Other [Member]
Loans, current balance	70
Loans, past due	0
Consumer Portfolio Segment [Member]
Loans, current balance	205	182
Loans, past due	$ 0	$ 0