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Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | $ 191,554 | $ 223,789
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 142,362 | 187,135
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 49,192 | 36,654
Commercial, Financial And Agricultural [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 22,114 | 40,645
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 22,103 | 40,621
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 11 | 24
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 13,965 | 25,761
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 13,261 | 24,328
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 704 | 1,433
Construction Real Estate - Remaining Commercial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 27,418 | 25,912
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 27,418 | 25,912
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment |  |
Construction Real Estate - Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 259 | 66
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment |  |
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 259 | 66
Construction Real Estate - Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 332 | 30
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment |  |
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 332 | 30
Residential Real Estate - Commercial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 36,583 | 44,276
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 36,583 | 44,276
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment |  |
Residential Real Estate - Mortgage [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 38,098 | 29,958
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment |  |
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 38,098 | 29,958
Residential Real Estate - HELOC [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 2,915 | 1,412
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment |  |
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 2,915 | 1,412
Residential Real Estate - Installment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 2,191 | 1,875
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment |  |
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | 2,191 | 1,875
Commercial Real Estate [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 42,978 | 51,978
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 42,978 | 51,978
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment |  |
Consumer [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Nonaccrual and accruing restructured loans | 4,701 | 1,876
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment | 19 | 20
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment | $ 4,682 | $ 1,856

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