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Note 4 - Loans and Allowance for Loan Losses - Nonaccrual Loans and Loans Past Due 90 Days or More and Still Accruing (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Loans past due 90 days and still accruing | $ 395 | $ 334
Nonaccrual | 12,130 | 10,112
Commercial real estate: |  |
Loans past due 90 days and still accruing | 395 | 334
Nonaccrual | 12,130 | 10,112
Consumer: |  |
Loans past due 90 days and still accruing | 395 | 334
Nonaccrual | 12,130 | 10,112
Residential Portfolio Segment [Member] |  |
Loans past due 90 days and still accruing | 121 | 131
Nonaccrual | 7,794 | 5,906
Commercial real estate: |  |
Loans past due 90 days and still accruing | 121 | 131
Nonaccrual | 7,794 | 5,906
Consumer: |  |
Loans past due 90 days and still accruing | 121 | 131
Nonaccrual | 7,794 | 5,906
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 652 | 476
Commercial real estate: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 652 | 476
Consumer: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 652 | 476
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 2,432 | 2,454
Commercial real estate: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 2,432 | 2,454
Consumer: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 2,432 | 2,454
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 424 | 444
Commercial real estate: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 424 | 444
Consumer: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 424 | 444
Commercial and Industrial Portfolio Segment [Member] |  |
Loans past due 90 days and still accruing | 31 |
Nonaccrual | 396 | 337
Commercial real estate: |  |
Loans past due 90 days and still accruing | 31 |
Nonaccrual | 396 | 337
Consumer: |  |
Loans past due 90 days and still accruing | 31 |
Nonaccrual | 396 | 337
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |
Loans past due 90 days and still accruing | 154 | 127
Nonaccrual | 59 | 86
Commercial real estate: |  |
Loans past due 90 days and still accruing | 154 | 127
Nonaccrual | 59 | 86
Consumer: |  |
Loans past due 90 days and still accruing | 154 | 127
Nonaccrual | 59 | 86
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 260 | 283
Commercial real estate: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 260 | 283
Consumer: |  |
Loans past due 90 days and still accruing |  |
Nonaccrual | 260 | 283
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] |  |
Loans past due 90 days and still accruing | 89 | 76
Nonaccrual | 113 | 126
Commercial real estate: |  |
Loans past due 90 days and still accruing | 89 | 76
Nonaccrual | 113 | 126
Consumer: |  |
Loans past due 90 days and still accruing | 89 | 76
Nonaccrual | $ 113 | $ 126

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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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