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Note 5 - Loans and Related Allowance for Loan and Lease Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loans, current balance | $ 4,859 | $ 7,858
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |
Loans, current balance | 81 | 458
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] |  |
Loans, current balance | 2,442 | 3,758
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Residential Portfolio Segment [Member] |  |
Loans, current balance | 1,577 | 2,487
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Commercial And Industrial [Member] |  |
Loans, current balance | 456 | 509
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Home Equity Lines of Credit [Member] |  |
Loans, current balance | 121 | 422
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0
Consumer Portfolio Segment [Member] |  |
Loans, current balance | 182 | 224
Financing Receivable, 90 Days or More Past Due, Still Accruing | $ 0 | $ 0

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