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Loans (Details 4) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With related allowance recorded | $ 22,466 | $ 31,944
Unpaid Principal Balance, With related allowance recorded | 27,316 | 39,284
Related Allowance |  | 11
Residential real estate - Closed-end first mortgages |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With no related allowance recorded | 7,628 | 7,919
Unpaid Principal Balance, With no related allowance recorded | 8,079 | 8,465
Recorded Investment , With related allowance recorded | 7,628 | 7,919
Unpaid Principal Balance, With related allowance recorded | 8,079 | 8,465
Related Allowance |  |
Commercial real estate - Owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With no related allowance recorded | 78 | 369
Unpaid Principal Balance, With no related allowance recorded | 78 | 376
Recorded Investment , With related allowance recorded | 78 | 369
Unpaid Principal Balance, With related allowance recorded | 78 | 376
Related Allowance |  |
Commercial real estate - Non owner occupied |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With no related allowance recorded | 13,855 | 15,208
Unpaid Principal Balance, With no related allowance recorded | 16,730 | 17,584
Recorded Investment , With related allowance recorded | 13,855 | 16,347
Unpaid Principal Balance, With related allowance recorded | 16,730 | 18,723
Related Allowance |  | 11
Land and construction |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With no related allowance recorded | 905 | 7,241
Unpaid Principal Balance, With no related allowance recorded | 2,429 | 11,652
Recorded Investment , With related allowance recorded | 905 | 7,241
Unpaid Principal Balance, With related allowance recorded | 2,429 | 11,652
Related Allowance |  |
Consumer |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With no related allowance recorded |  | 68
Unpaid Principal Balance, With no related allowance recorded |  | 68
Recorded Investment , With related allowance recorded |  | 68
Unpaid Principal Balance, With related allowance recorded |  | 68
Related Allowance |  |
Commercial real estate - Non owner occupied recorded allowance |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment , With related allowance recorded |  | 1,139
Unpaid Principal Balance, With related allowance recorded |  | 1,139
Related Allowance |  | $ 11

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