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Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | $ 78,171 | $ 70,492 | $ 80,664
Average recorded investment | 78,669 | 72,000 |
Interest income recognized | 2,396 | 562 |
Commercial Financial And Agricultural [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | 28,596 | 20,571 |
Average recorded investment | 29,858 | 19,876 |
Interest income recognized | 238 | 131 |
Construction Real Estate, SEPH Commercial Land and Development [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | 2,043 | 2,077 |
Average recorded investment | 2,043 | 2,077 |
Interest income recognized | 0 | 8 |
Construction Real Estate - Remaining Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | 4,845 | 5,725 |
Average recorded investment | 4,771 | 5,697 |
Interest income recognized | 13 | 5 |
Residential Real Estate - Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | 24,619 | 25,219 |
Average recorded investment | 24,897 | 25,373 |
Interest income recognized | 1,965 | 255 |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Recorded investment | 18,068 | 16,900 |
Average recorded investment | 17,100 | 18,977 |
Interest income recognized | $ 180 | $ 163 |

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