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Note 7 - Loans And Related Allowance For Loan Losses (Details) - Impaired Loans by Class (USD $) In Thousands, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | $ 7,464 | $ 8,408
Impaired loans with no related allowance unpaid principal balance | 7,578 | 8,441
Impaired loans with related allowance recorded investment | 10,194 | 12,880
Impaired loans with related allowance unpaid principal balance | 10,233 | 12,899
Impaired loans, related allowance | 2,371 | 3,688
Impaired loans recorded investment | 17,658 | 21,288
Impaired loans unpaid principal balance | 17,811 | 21,340
Commercial and Industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 1,177 | 1,230
Impaired loans with no related allowance unpaid principal balance | 1,177 | 1,229
Impaired loans with related allowance recorded investment | 1,133 |
Impaired loans with related allowance unpaid principal balance | 1,133 |
Impaired loans, related allowance | 323 | 1,189
Impaired loans recorded investment | 2,310 | 4,592
Impaired loans unpaid principal balance | 2,310 | 4,596
Real Estate Construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 150 | 308
Impaired loans with no related allowance unpaid principal balance | 150 | 308
Impaired loans with related allowance recorded investment | 3,777 | 3,685
Impaired loans with related allowance unpaid principal balance | 3,777 | 3,685
Impaired loans, related allowance | 814 | 933
Impaired loans recorded investment | 3,927 | 3,993
Impaired loans unpaid principal balance | 3,927 | 3,993
Residential Real Estate Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 2,627 | 2,716
Impaired loans with no related allowance unpaid principal balance | 2,741 | 2,729
Impaired loans with related allowance recorded investment | 2,278 | 3,045
Impaired loans with related allowance unpaid principal balance | 2,317 | 3,054
Impaired loans, related allowance | 754 | 600
Impaired loans recorded investment | 4,905 | 5,761
Impaired loans unpaid principal balance | 5,058 | 5,783
Commercial Real Estate Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 3,506 | 4,143
Impaired loans with no related allowance unpaid principal balance | 3,506 | 4,164
Impaired loans with related allowance recorded investment | 3,000 | 2,771
Impaired loans with related allowance unpaid principal balance | 3,000 | 2,776
Impaired loans, related allowance | 479 | 960
Impaired loans recorded investment | 6,506 | 6,914
Impaired loans unpaid principal balance | 6,506 | 6,940
Consumer Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired loans with no related allowance recorded investment | 4 | 11
Impaired loans with no related allowance unpaid principal balance | 4 | 11
Impaired loans with related allowance recorded investment | 6 | 17
Impaired loans with related allowance unpaid principal balance | 6 | 17
Impaired loans, related allowance | 1 | 6
Impaired loans recorded investment | 10 | 28
Impaired loans unpaid principal balance | 10 | 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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