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Loans and Allowance for Loan Losses (Details 4) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011 | Dec. 31, 2011
Impaired loans |  |  |  |  |
Impaired loans, Related Allowance | $ 13,200,000 |  | $ 13,200,000 |  | $ 18,996,000
Impaired Loans, second quarter average recorded principal balance | 57,561,000 | 50,229,000 |  |  |
Impaired loans, Unpaid Contractual Principal Balance | 71,358,000 |  | 71,358,000 |  | 97,771,000
Impaired loans, Recorded Principal Balance | 51,623,000 |  | 51,623,000 |  | 70,978,000
Impaired loans, Year-To-Date Average Recorded Principal Balance |  |  | 62,033,000 | 55,471,000 |
Total commercial [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Impaired loans, Related Allowance | 12,584,000 |  | 12,584,000 |  | 18,645,000
Impaired Loans, second quarter average recorded principal balance | 55,400,000 | 47,456,000 |  |  |
Impaired loans, Unpaid Contractual Principal Balance | 68,419,000 |  | 68,419,000 |  | 94,668,000
Impaired loans, Recorded Principal Balance | 49,478,000 |  | 49,478,000 |  | 68,893,000
Impaired loans, Year-To-Date Average Recorded Principal Balance |  |  | 59,897,000 | 52,587,000 |
Total retail [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Impaired loans, Related Allowance | 616,000 |  | 616,000 |  | 351,000
Impaired Loans, second quarter average recorded principal balance | 2,161,000 | 2,773,000 |  |  |
Impaired loans, Unpaid Contractual Principal Balance | 2,939,000 |  | 2,939,000 |  | 3,103,000
Impaired loans, Recorded Principal Balance | 2,145,000 |  | 2,145,000 |  | 2,085,000
Impaired loans, Year-To-Date Average Recorded Principal Balance |  |  | 2,136,000 | 2,884,000 |
Impaired loans with no related allowance [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 29,211,000 |  | 29,211,000 |  | 33,129,000
Recorded Principal Balance, with no related allowance | 17,123,000 |  | 17,123,000 |  | 20,839,000
Average Recorded Principal Balance, with no related allowance | 18,164,000 | 20,813,000 | 19,055,000 | 25,289,000 |
Impaired loans with no related allowance [Member] | Commercial and industrial [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 3,896,000 |  | 3,896,000 |  | 4,670,000
Recorded Principal Balance, with no related allowance | 3,129,000 |  | 3,129,000 |  | 4,254,000
Average Recorded Principal Balance, with no related allowance | 3,270,000 | 1,871,000 | 3,598,000 | 1,959,000 |
Impaired loans with no related allowance [Member] | Vacant land, land development and residential construction [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 2,898,000 |  | 2,898,000 |  | 5,308,000
Recorded Principal Balance, with no related allowance | 1,794,000 |  | 1,794,000 |  | 2,755,000
Average Recorded Principal Balance, with no related allowance | 1,958,000 | 1,587,000 | 2,224,000 | 4,415,000 |
Impaired loans with no related allowance [Member] | Real Estate - Owner Occupied [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 5,100,000 |  | 5,100,000 |  | 5,525,000
Recorded Principal Balance, with no related allowance | 3,535,000 |  | 3,535,000 |  | 3,572,000
Average Recorded Principal Balance, with no related allowance | 3,661,000 | 4,187,000 | 3,631,000 | 4,432,000 |
Impaired loans with no related allowance [Member] | Real Estate - Non-Owner Occupied [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 11,639,000 |  | 11,639,000 |  | 14,017,000
Recorded Principal Balance, with no related allowance | 6,685,000 |  | 6,685,000 |  | 8,131,000
Average Recorded Principal Balance, with no related allowance | 7,145,000 | 10,453,000 | 7,473,000 | 12,227,000 |
Impaired loans with no related allowance [Member] | Real Estate - Multi-Family and Residential Rental [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 4,027,000 |  | 4,027,000 |  | 1,309,000
Recorded Principal Balance, with no related allowance | 852,000 |  | 852,000 |  | 671,000
Average Recorded Principal Balance, with no related allowance | 855,000 | 1,520,000 | 794,000 | 1,364,000 |
Impaired loans with no related allowance [Member] | Total commercial [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 27,560,000 |  | 27,560,000 |  | 30,829,000
Recorded Principal Balance, with no related allowance | 15,995,000 |  | 15,995,000 |  | 19,383,000
Average Recorded Principal Balance, with no related allowance | 16,889,000 | 19,618,000 | 17,720,000 | 24,397,000 |
Impaired loans with no related allowance [Member] | Retail Home Equity and Other [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 500,000 |  | 500,000 |  | 1,000,000
Recorded Principal Balance, with no related allowance | 477,000 |  | 477,000 |  | 727,000
Average Recorded Principal Balance, with no related allowance | 600,000 | 768,000 | 642,000 | 562,000 |
Impaired loans with no related allowance [Member] | Retail 1-4 Family Mortgages [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 1,151,000 |  | 1,151,000 |  | 1,300,000
Recorded Principal Balance, with no related allowance | 651,000 |  | 651,000 |  | 729,000
Average Recorded Principal Balance, with no related allowance | 675,000 | 427,000 | 693,000 | 330,000 |
Impaired loans with no related allowance [Member] | Total retail [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with no related allowance | 1,651,000 |  | 1,651,000 |  | 2,300,000
Recorded Principal Balance, with no related allowance | 1,128,000 |  | 1,128,000 |  | 1,456,000
Average Recorded Principal Balance, with no related allowance | 1,275,000 | 1,195,000 | 1,335,000 | 892,000 |
Impaired loans with an allowance [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 42,147,000 |  | 42,147,000 |  | 64,642,000
Recorded Principal Balance, with related allowance | 34,500,000 |  | 34,500,000 |  | 50,139,000
Impaired loans, Related Allowance | 13,200,000 |  | 13,200,000 |  | 18,996,000
Impaired Loans, second quarter average recorded principal balance | 39,397,000 | 29,416,000 | 42,978,000 | 30,182,000 |
Impaired loans with an allowance [Member] | Commercial and industrial [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 4,871,000 |  | 4,871,000 |  | 3,500,000
Recorded Principal Balance, with related allowance | 4,272,000 |  | 4,272,000 |  | 3,023,000
Impaired loans, Related Allowance | 1,680,000 |  | 1,680,000 |  | 1,172,000
Impaired Loans, second quarter average recorded principal balance | 3,909,000 | 3,913,000 | 3,613,000 | 4,916,000 |
Impaired loans with an allowance [Member] | Vacant land, land development and residential construction [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 3,185,000 |  | 3,185,000 |  | 5,551,000
Recorded Principal Balance, with related allowance | 2,844,000 |  | 2,844,000 |  | 4,267,000
Impaired loans, Related Allowance | 1,416,000 |  | 1,416,000 |  | 1,799,000
Impaired Loans, second quarter average recorded principal balance | 3,366,000 | 6,812,000 | 3,667,000 | 5,998,000 |
Impaired loans with an allowance [Member] | Real Estate - Owner Occupied [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 5,699,000 |  | 5,699,000 |  | 8,544,000
Recorded Principal Balance, with related allowance | 5,427,000 |  | 5,427,000 |  | 7,039,000
Impaired loans, Related Allowance | 2,343,000 |  | 2,343,000 |  | 2,180,000
Impaired Loans, second quarter average recorded principal balance | 5,545,000 | 4,330,000 | 6,043,000 | 4,972,000 |
Impaired loans with an allowance [Member] | Real Estate - Non-Owner Occupied [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 21,331,000 |  | 21,331,000 |  | 32,331,000
Recorded Principal Balance, with related allowance | 15,919,000 |  | 15,919,000 |  | 22,009,000
Impaired loans, Related Allowance | 5,907,000 |  | 5,907,000 |  | 7,319,000
Impaired Loans, second quarter average recorded principal balance | 17,904,000 | 9,757,000 | 19,272,000 | 9,129,000 |
Impaired loans with an allowance [Member] | Real Estate - Multi-Family and Residential Rental [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 5,773,000 |  | 5,773,000 |  | 13,913,000
Recorded Principal Balance, with related allowance | 5,021,000 |  | 5,021,000 |  | 13,172,000
Impaired loans, Related Allowance | 1,238,000 |  | 1,238,000 |  | 6,175,000
Impaired Loans, second quarter average recorded principal balance | 7,787,000 | 3,026,000 | 9,582,000 | 3,175,000 |
Impaired loans with an allowance [Member] | Total commercial [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 40,859,000 |  | 40,859,000 |  | 63,839,000
Recorded Principal Balance, with related allowance | 33,483,000 |  | 33,483,000 |  | 49,510,000
Impaired loans, Related Allowance | 12,584,000 |  | 12,584,000 |  | 18,645,000
Impaired Loans, second quarter average recorded principal balance | 38,511,000 | 27,838,000 | 42,177,000 | 28,190,000 |
Impaired loans with an allowance [Member] | Retail Home Equity and Other [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 438,000 |  | 438,000 |  | 286,000
Recorded Principal Balance, with related allowance | 375,000 |  | 375,000 |  | 229,000
Impaired loans, Related Allowance | 362,000 |  | 362,000 |  | 215,000
Impaired Loans, second quarter average recorded principal balance | 300,000 | 1,005,000 | 277,000 | 1,307,000 |
Impaired loans with an allowance [Member] | Retail 1-4 Family Mortgages [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 850,000 |  | 850,000 |  | 517,000
Recorded Principal Balance, with related allowance | 642,000 |  | 642,000 |  | 400,000
Impaired loans, Related Allowance | 254,000 |  | 254,000 |  | 136,000
Impaired Loans, second quarter average recorded principal balance | 586,000 | 573,000 | 524,000 | 685,000 |
Impaired loans with an allowance [Member] | Total retail [Member] |  |  |  |  |
Impaired loans |  |  |  |  |
Unpaid Contractual Principal Balance, with related allowance | 1,288,000 |  | 1,288,000 |  | 803,000
Recorded Principal Balance, with related allowance | 1,017,000 |  | 1,017,000 |  | 629,000
Impaired loans, Related Allowance | 616,000 |  | 616,000 |  | 351,000
Impaired Loans, second quarter average recorded principal balance | $ 886,000 | $ 1,578,000 | $ 801,000 | $ 1,992,000 |

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