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Allowance for Loan Losses and Credit Quality Indicators (Details Textual) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 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 | 7,460,000 |  | 7,460,000 |  | 9,450,000
Net nonaccrual status | 4,780,000 |  | 4,780,000 |  | 3,270,000
Allowance for loan losses | 675,000 |  | 675,000 |  | 1,140,000
Interest income recognized on loan restructurings | 81,000 | 210,000 | 175,000 | 333,000 |
Restructured loans to borrowers experiencing financial difficulty in excess of | 250,000 |  | 250,000 |  |
Payment defaults on loans modified as TDRs | 0 | 0 |  |  |
Time period for restructuring |  |  | 12 months |  |
Nonperforming TDRs | 469,000 |  | 469,000 |  | 600,000
Percentage of Total TDR | 6.29% |  | 6.29% |  | 6.35%
Performing status returned period |  |  | 6 months |  |
Accruing loans |  |  | 0 |  |
Accruing loans contractually past due 90 days or more | $ 17,945,000 |  | $ 17,945,000 |  | $ 13,935,000
Payment performance period |  |  | 6 months |  |
Nonaccrual loans maximum period |  |  | 29 days |  |
Nonaccrual loans minimum period |  |  | 0 days |  |

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- Definition Interest income recognized on loan restructurings. + References No definition available. + Details
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- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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