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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Past Due and Nonaccrual Loans - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing |  | $ 80 | [1] | $ 207 | [1] | $ 266
Nonaccruals (including impaired nonaccruals) |  | 8,905 | [1] | 9,287 | [1] | $ 5,009
Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 3,660 |  | 2,447 |  |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 2,959 |  | $ 2,302 |  |
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  | $ 28 |  |
Real Estate Construction Portfolio Segment[Member] | Construction Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  |  |  |
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 67 |  | $ 25 |  |
Consumer Real Estate Portfolio Segment [Member] | Equity Lines [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  |  |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] | $ 67 |  | $ 80 |  |
Nonaccruals (including impaired nonaccruals) | [1] | 4 |  | 105 |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 972 |  | 719 |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 67 |  | 185 |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  | $ 1 |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 66 |  | $ 74 |  |
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  | $ 1 |  |
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] | $ 13 |  | $ 59 |  |
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 71 |  | 336 |  |
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  | $ 45 |  |
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] | $ 2,672 |  | $ 2,735 |  |
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 837 |  | 850 |  |
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 868 |  | 868 |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  | 102 |  |
Nonaccruals (including impaired nonaccruals) | [1] | $ 2,805 |  | $ 2,573 |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 637 |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 1,569 |  | $ 1,066 |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] | $ 2,921 |  | $ 3,066 |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 807 |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  | $ 70 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] |  |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] | $ 490 |  | $ 749 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] |  |  | 153 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 442 |  | 43 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] | $ 8 |  | $ 4 |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 4 |  | $ 3 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 8 |  | 4 |  |
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] | $ 3 |  | $ 20 |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 147 |  | $ 205 |  |
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | 3 |  | $ 20 |  |
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
90 or more days past due and still accruing | [1] | $ 2 |  |  |  |
Nonaccruals (including impaired nonaccruals) | [1] |  |  |  |  |
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Financing Receivables, 30 to 89 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 52 |  | $ 54 |  |
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |  |  |
Past due loans | [1] | $ 2 |  |  |  |
[1] | Only classes with past-due or nonaccrual loans are shown.

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524 + Details
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