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Non-performing Assets and Impaired Loans (Details Textual) (USD $) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 Contract ConsecutivePayment | Dec. 31, 2011
Non-Performing Loans and Impaired Loans (Additional Textual) [Abstract] |  |
Non-accrual loans | $ 13,374,000 | $ 14,368,000
Non-performing TDR's | 6,600,000 |
Loan acquired included in non-accrual loans | 3,200,000 |
Loan acquired included in non-performing TDR's | 2,200,000 |
Minimum period required for satisfactory performance before returning to accrual status | 6 months |
Restructured loans with modified recorded balances | 0 |
Restructured loan returned to accruing status number of Consecutive Payments of loan | 6 |
Restructured loan reported in TDRs | 10,400,000 |
Number TDRs returned to accrual status | 0 |
Specific reserves allocated to troubled debt restructuring | 1,800,000 |
Loans with an aggregate credit exposure | 500,000 |
Loans classified as TDR after a period | 90 days |
Loan delinquent period | 90 days |
Maximum [Member] |  |
Non-Performing Loans and Impaired Loans (Textual) [Abstract] |  |
Delay or shortfall in payments of loan | 30 days or more |
Minimum [Member] |  |
Non-Performing Loans and Impaired Loans (Textual) [Abstract] |  |
Period for loans moved to non accrual status | 90 days or more |
Performing Financing Receivable [Member] |  |
Non-Performing Loans and Impaired Loans (Textual) [Abstract] |  |
Restructured loan | $ 3,700,000 |
Good Pass [Member] |  |
Non-Performing Loans and Impaired Loans (Textual) [Abstract] |  |
Number of consecutive years of profit for Good Pass Rating | 3 years |
Number of consecutive years of profit Unaudited Financial Information for Good Pass Rating | 5 years |
Number of years of Satisfactory Relationship with bank for Good Pass Rating | 5 years |
Satisfactory Pass [Member] |  |
Non-Performing Loans and Impaired Loans (Textual) [Abstract] |  |
Number of years of Satisfactory Repayment for Good Pass Rating, Minimum | 2 years |

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