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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
--- | --- | --- | ---
Loans past due 90 days or more and still accruing |  | $ 63 | [1] | $ 51 | [1] | $ 250
Nonaccruals |  | 3,076 | [1],[2] | 2,769 | [1],[2] | $ 3,156
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] |  |  |  |  |
Nonaccruals | [1],[2] |  |  |  |  |
Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 38 |  | 11 |  |
Nonaccruals | [1],[2] | 163 |  | 145 |  |
Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 0 |  |  |  |
Nonaccruals | [1],[2] | 0 |  | 0 |  |
Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 0 |  | 0 |  |
Nonaccruals | [1],[2] | 200 |  | 6 |  |
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 0 |  | 0 |  |
Nonaccruals | [1],[2] | 195 |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 0 |  | 0 |  |
Nonaccruals | [1],[2] |  |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 0 |  | 0 |  |
Nonaccruals | [1],[2] | 2,510 |  | 2,602 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] |  |  | 0 |  |
Nonaccruals | [1],[2] |  |  | 15 |  |
Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] |  |  |  |  |
Nonaccruals | [1],[2] | 8 |  |  |  |
Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 5 |  | 12 |  |
Nonaccruals | [1],[2] | 0 |  | 0 |  |
Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 10 |  | 22 |  |
Nonaccruals | [1],[2] |  |  | 1 |  |
Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |  |  |  |
Loans past due 90 days or more and still accruing | [1] | 10 |  | 6 |  |
Nonaccruals | [1],[2] | 0 |  | 0 |  |
Financing Receivables 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 2,768 |  | 2,263 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 70 |  |  |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 1,388 |  | 637 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 12 |  | 188 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 54 |  | 66 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 294 |  | 303 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 379 |  | 402 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 0 |  | 0 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due and accruing | [1] |  |  | 131 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 196 |  |  |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 7 |  | 7 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 322 |  | 375 |  |
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 46 |  | 154 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 2,793 |  | 2,658 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |  |  |  |  |
Loans past due and accruing | [1] |  |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End First Liens [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 63 |  | 16 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Closed End Junior Liens [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 0 |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Real Estate Portfolio Segment [Member] | Investor Owned Residential Real Estate [Member] |  |  |  |  |  |
Loans past due and accruing | [1] |  |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 195 |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 0 |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Other [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 2,510 |  | 2,602 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due and accruing | [1] |  |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Non Real Estate Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Loans past due and accruing | [1] |  |  |  |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Credit Card Receivable [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 5 |  | 12 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | 10 |  | 22 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Non Real Estate Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |  |  |  |
Loans past due and accruing | [1] | $ 10 |  | $ 6 |  |
[1] | Only classes with past-due or nonaccrual loans are shown.
[2] | Includes current and past due loans in nonaccrual status. Includes impaired loans in nonaccrual status.

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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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