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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Impaired Loans by Class (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
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With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | $ 12,214 | $ 9,284
Impaired loans with no related allowance unpaid principal balance | 12,327 | 9,472
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 4,678 | 9,681
Impaired loans with related allowance unpaid principal balance | 4,717 | 9,720
Impaired loans, related allowance | 1,382 | 1,807
Total: |  |
Impaired loans recorded investment | 16,892 | 18,965
Impaired loans unpaid principal balance | 17,044 | 19,192
Impaired loans, related allowance | 1,382 | 1,807
Commercial and Industrial [Member] |  |
With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | 2,402 | 1,357
Impaired loans with no related allowance unpaid principal balance | 2,402 | 1,357
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment |  | 534
Impaired loans with related allowance unpaid principal balance |  | 534
Impaired loans, related allowance | 221 | 179
Total: |  |
Impaired loans recorded investment | 2,929 | 1,891
Impaired loans unpaid principal balance | 2,929 | 1,891
Impaired loans, related allowance | 221 | 179
Real Estate Construction [Member] |  |
With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | 3,058 | 124
Impaired loans with no related allowance unpaid principal balance | 3,058 | 124
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 637 | 3,887
Impaired loans with related allowance unpaid principal balance | 637 | 3,887
Impaired loans, related allowance | 153 | 210
Total: |  |
Impaired loans recorded investment | 3,695 | 4,011
Impaired loans unpaid principal balance | 3,695 | 4,011
Impaired loans, related allowance | 153 | 210
Residential Real Estate Mortgage [Member] |  |
With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | 2,670 | 2,704
Impaired loans with no related allowance unpaid principal balance | 2,783 | 2,892
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 2,427 | 3,178
Impaired loans with related allowance unpaid principal balance | 2,466 | 3,217
Impaired loans, related allowance | 798 | 855
Total: |  |
Impaired loans recorded investment | 5,097 | 5,882
Impaired loans unpaid principal balance | 5,249 | 6,109
Impaired loans, related allowance | 798 | 855
Commercial Real Estate Mortgage [Member] |  |
With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | 4,073 | 5,093
Impaired loans with no related allowance unpaid principal balance | 4,073 | 5,093
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 1,080 | 2,082
Impaired loans with related allowance unpaid principal balance | 1,080 | 2,082
Impaired loans, related allowance | 198 | 563
Total: |  |
Impaired loans recorded investment | 5,153 | 7,175
Impaired loans unpaid principal balance | 5,153 | 7,175
Impaired loans, related allowance | 198 | 563
Consumer Installment [Member] |  |
With no related allowance recorded: |  |
Impaired loans with no related allowance recorded investment | 11 | 6
Impaired loans with no related allowance unpaid principal balance | 11 | 6
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 7 |
Impaired loans with related allowance unpaid principal balance | 7 |
Impaired loans, related allowance | 12 |
Total: |  |
Impaired loans recorded investment | 18 | 6
Impaired loans unpaid principal balance | 18 | 6
Impaired loans, related allowance | 12 |
Commercial and Industrial [Member] |  |
With an allowance recorded: |  |
Impaired loans with related allowance recorded investment | 527 |
Impaired loans with related allowance unpaid principal balance | 527 |
Impaired loans, related allowance | 221 |
Total: |  |
Impaired loans, related allowance | $ 221 |

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524 + Details
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