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Loans and Allowance for Loan Losses (Details 8) (USD $) | 3 Months Ended
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Mar. 31, 2013 Contract | Mar. 31, 2012 Contract
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 1 | 0
Recorded Principal Balance | $ 44,000 | $ 0
Total commercial [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 1 | 0
Recorded Principal Balance | 44,000 | 0
Total commercial [Member] | Commercial and industrial [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total commercial [Member] | Vacant land, land development and residential construction [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total commercial [Member] | Real estate - owner occupied [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 1 | 0
Recorded Principal Balance | 44,000 | 0
Total commercial [Member] | Real estate - non-owner occupied [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total commercial [Member] | Real estate - multi-family and residential rental [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total retail [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total retail [Member] | Home equity and other [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | 0 | 0
Total retail [Member] | 1 - 4 family mortgages [Member] |  |
Loans, modified as troubled debt restructurings within the previous twelve months, that became over 30 days past due |  |
Number of Contracts | 0 | 0
Recorded Principal Balance | $ 0 | $ 0

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