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Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | $ 142,362 | $ 192,464 | $ 142,362 | $ 192,464 | $ 187,135
Average recorded investment | 159,750 | 194,878 | 171,347 | 223,412 |
Interest income recognized | 1,095 | 191 | 2,515 | 789 |
Commercial, Financial And Agricultural [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 22,103 | 24,925 | 22,103 | 24,925 |
Average recorded investment | 35,720 | 24,049 | 38,989 | 21,361 |
Interest income recognized | 100 | 49 | 410 | 155 |
Construction Real Estate - Vision/SEPH Commercial Land And Development [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 13,261 | 42,036 | 13,261 | 42,036 |
Average recorded investment | 14,991 | 43,555 | 18,481 | 67,135 |
Interest income recognized |  |  |  |  |
Construction Real Estate - Remaining Commercial [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 27,418 | 33,961 | 27,418 | 33,961 |
Average recorded investment | 28,400 | 34,027 | 28,633 | 29,573 |
Interest income recognized | 411 | 116 | 861 | 330 |
Residential Real Estate - Commercial [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 36,583 | 47,422 | 36,583 | 47,422 |
Average recorded investment | 37,121 | 48,064 | 40,199 | 54,454 |
Interest income recognized | 233 |  | 398 | 153 |
Commercial Real Estate [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 42,978 | 44,099 | 42,978 | 44,099 |
Average recorded investment | 43,499 | 45,162 | 45,026 | 50,874 |
Interest income recognized | 351 | 26 | 845 | 150 |
Consumer [Member] |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Recorded investment | 19 | 21 | 19 | 21 |
Average recorded investment | 19 | 21 | 19 | 15 |
Interest income recognized |  |  | $ 1 | $ 1 |

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