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Loans (Aging Of Recorded Investment In Past Due Loans) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | $ 27,488 |  | $ 37,517 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 110,371 | [1],[2] | 94,663 | [1]
Total loans past due | 137,859 |  | 132,180 |
Total current | 4,200,724 |  | 4,199,603 |
Total recorded investment | 4,338,583 |  | 4,331,783 |
Loans past due 90 days or more and accruing | 2,339 |  | 3,561 |
Commercial, Financial And Agricultural [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 3,935 |  | 3,106 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 28,225 | [1],[2] | 11,308 | [1]
Total loans past due | 32,160 |  | 14,414 |
Total current | 723,671 |  | 732,504 |
Total recorded investment | 755,831 | [3] | 746,918 | [3]
Loans past due 90 days or more and accruing | 12 |  |  |
Construction Real Estate - Vision/SE LLC Commercial Land And Development [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 337 |  |  |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 16,587 | [1],[2] | 19,235 | [1]
Total loans past due | 16,924 |  | 19,235 |
Total current | 9,196 |  | 12,399 |
Total recorded investment | 26,120 | [3] | 31,634 | [3]
Construction Real Estate - Remaining Commercial [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days |  |  | 99 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 7,702 | [1],[2] | 7,839 | [1]
Total loans past due | 7,702 |  | 7,938 |
Total current | 141,645 |  | 148,509 |
Total recorded investment | 149,347 |  | 156,447 |
Construction Real Estate - Mortgage [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 173 |  | 76 |
Total loans past due | 173 |  | 76 |
Total current | 19,520 |  | 20,027 |
Total recorded investment | 19,693 |  | 20,103 |
Construction Real Estate - Installment [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 61 |  | 421 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 75 | [1],[2] | 8 | [1]
Total loans past due | 136 |  | 429 |
Total current | 9,092 |  | 9,483 |
Total recorded investment | 9,228 |  | 9,912 |
Loans past due 90 days or more and accruing | 16 |  |  |
Residential Real Estate - Commercial [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 502 |  | 1,545 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 13,261 | [1],[2] | 10,097 | [1]
Total loans past due | 13,763 |  | 11,642 |
Total current | 379,909 |  | 385,287 |
Total recorded investment | 393,672 |  | 396,929 |
Residential Real Estate - Mortgage [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 13,174 |  | 15,879 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 18,840 | [1],[2] | 20,614 | [1]
Total loans past due | 32,014 |  | 36,493 |
Total current | 974,483 |  | 918,787 |
Total recorded investment | 1,006,497 |  | 955,280 |
Loans past due 90 days or more and accruing | 1,523 |  | 2,610 |
Residential Real Estate - HELOC [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 331 |  | 1,015 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 297 | [1],[2] | 436 | [1]
Total loans past due | 628 |  | 1,451 |
Total current | 222,036 |  | 227,173 |
Total recorded investment | 222,664 |  | 228,624 |
Residential Real Estate - Installment [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 611 |  | 1,549 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 510 | [1],[2] | 1,136 | [1]
Total loans past due | 1,121 |  | 2,685 |
Total current | 47,506 |  | 48,905 |
Total recorded investment | 48,627 |  | 51,590 |
Loans past due 90 days or more and accruing | 221 |  | 58 |
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 1,062 |  | 2,632 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 23,067 | [1],[2] | 21,798 | [1]
Total loans past due | 24,129 |  | 24,430 |
Total current | 1,068,014 |  | 1,088,379 |
Total recorded investment | 1,092,143 | [3] | 1,112,809 | [3]
Consumer [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Accruing loans past due 30-89 days | 7,302 |  | 11,195 |
Past due nonaccrual loans and loans past due 90 days or more and accruing | 1,807 | [1],[2] | 2,192 | [1]
Total loans past due | 9,109 |  | 13,387 |
Total current | 603,651 |  | 606,048 |
Total recorded investment | 612,760 |  | 619,435 |
Loans past due 90 days or more and accruing | 567 |  | 893 |
Leases [Member] |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Total current | 2,001 |  | 2,102 |
Total recorded investment | $ 2,001 |  | $ 2,102 |
[1] | Includes $3.6 million of loans past due 90 days or more and accruing.
[2] | Includes $2.4 million of loans past due 90 days or more and accruing.
[3] | Included within commercial, financial and agricultural loans, commercial real estate loans, and Vision/SE LLC commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

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