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Note 4 - Loans and Related Allowance for Loan Losses (Details) - Impaired Loans by Class (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | $ 9,284 | $ 8,408
Impaired loans with no related allowance unpaid principal balance | 9,472 | 8,441
Impaired loans with related allowance recorded investment | 9,681 | 12,880
Impaired loans with related allowance unpaid principal balance | 9,720 | 12,899
Impaired loans, related allowance | 1,807 | 3,688
Impaired loans recorded investment | 18,965 | 21,288
Impaired loans unpaid principal balance | 19,192 | 21,340
Commercial and Industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 1,357 | 1,230
Impaired loans with no related allowance unpaid principal balance | 1,357 | 1,229
Impaired loans with related allowance recorded investment | 534 |
Impaired loans with related allowance unpaid principal balance | 534 |
Impaired loans, related allowance | 179 | 1,189
Impaired loans recorded investment | 1,891 | 4,592
Impaired loans unpaid principal balance | 1,891 | 4,596
Real Estate Construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 124 | 308
Impaired loans with no related allowance unpaid principal balance | 124 | 308
Impaired loans with related allowance recorded investment | 3,887 | 3,685
Impaired loans with related allowance unpaid principal balance | 3,887 | 3,685
Impaired loans, related allowance | 210 | 933
Impaired loans recorded investment | 4,011 | 3,993
Impaired loans unpaid principal balance | 4,011 | 3,993
Residential Real Estate Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 2,704 | 2,716
Impaired loans with no related allowance unpaid principal balance | 2,892 | 2,729
Impaired loans with related allowance recorded investment | 3,178 | 3,045
Impaired loans with related allowance unpaid principal balance | 3,217 | 3,054
Impaired loans, related allowance | 855 | 600
Impaired loans recorded investment | 5,882 | 5,761
Impaired loans unpaid principal balance | 6,109 | 5,783
Commercial Real Estate Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 5,093 | 4,143
Impaired loans with no related allowance unpaid principal balance | 5,093 | 4,164
Impaired loans with related allowance recorded investment | 2,082 | 2,771
Impaired loans with related allowance unpaid principal balance | 2,082 | 2,776
Impaired loans, related allowance | 563 | 960
Impaired loans recorded investment | 7,175 | 6,914
Impaired loans unpaid principal balance | 7,175 | 6,940
Consumer Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 6 | 11
Impaired loans with no related allowance unpaid principal balance | 6 | 11
Impaired loans with related allowance recorded investment |  | 17
Impaired loans with related allowance unpaid principal balance |  | 17
Impaired loans, related allowance |  | 6
Impaired loans recorded investment | 6 | 28
Impaired loans unpaid principal balance | 6 | 28
Commercial and Industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with related allowance recorded investment |  | 3,362
Impaired loans with related allowance unpaid principal balance |  | 3,367
Impaired loans, related allowance |  | $ 1,189

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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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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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