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Allowance for Loan Losses and Credit Quality Indicators (Details Textual) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Loans and Allowance for Loan Losses and Credit Quality Indicators (Textual) [Abstract] |  |  |  |  |
Minimum commercial loan relationships to be reviewed by loan review function | $ 2,000,000 |  | $ 2,000,000 |  |
Total loan restructurings | 6,860,000 |  | 6,860,000 |  | 9,450,000
Net nonaccrual status | 2,180,000 |  | 2,180,000 |  | 3,270,000
Allowance for loan losses | 675,000 |  | 675,000 |  | 1,140,000
Interest income recognized on loan restructurings | 62,000 | 79,000 | 237,000 | 428,000 |
Restructured loans to borrowers experiencing financial difficulty in excess of | 250,000 |  | 250,000 |  |
Payment defaults on loans modified as TDRs | 0 | 0 | 0 | 0 |
Time period for restructuring |  |  | 12 months |  |
Nonperforming TDRs | 121,000 |  | 121,000 |  | 600,000
Percentage of Total TDR | 17.60% |  | 17.60% |  | 6.35%
Performing status returned period |  |  | 6 months |  |
Accruing loans |  |  | 0 |  |
Accruing loans contractually past due 90 days or more | 23,717,000 |  | 23,717,000 |  | 13,935,000
Payment performance period |  |  | 6 months |  |
Nonaccrual loans maximum period |  |  | 29 days |  |
Nonaccrual loans minimum period |  |  | 0 days |  |
Covered loans recorded as TDRs | $ 0 |  | $ 0 |  |

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554 + Details
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