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Loans and Leases (Aging Of The Outstanding Loans and Leases By Class) (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | $ 1,044,064 | $ 1,186,498 | $ 996,280 | $ 1,029,426
Commercial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 646,961 | 726,123 |  |
Non-PCI loans | 12,219,444 | 11,205,639 |  |
Commercial | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 41,582 | 78,079 |  |
Non-PCI loans | 563,926 | 493,133 |  |
Commercial | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 568,256 | 577,518 |  |
Non-PCI loans | 8,076,946 | 7,552,948 |  |
Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 18,013 | 40,193 |  |
Non-PCI loans | 316,924 | 244,875 |  |
Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 17,023 | 27,254 |  |
Non-PCI loans | 2,211,973 | 1,988,934 |  |
Commercial | Lease financing |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Non-PCI loans | 691,915 | 571,916 |  |
Commercial | Other |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 2,087 | 3,079 |  |
Non-PCI loans | 357,760 | 353,833 |  |
Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 397,103 | 460,375 |  |
Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 347 | 912 |  |
Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 334,518 | 382,340 |  |
Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 59,695 | 74,109 |  |
Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 2,543 | 3,014 |  |
PCI Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
PCI loans | 1,044,064 | 1,186,498 |  |
PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 343,665 | 398,225 |  |
PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 347 | 506 |  |
PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 286,402 | 326,589 |  |
PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 54,594 | 68,548 |  |
PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 2,322 | 2,582 |  |
Non-PCI Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 126,620 | 101,467 |  |
Current loans | 18,685,122 | 17,481,500 |  |
Non-PCI loans | 18,811,742 | 17,582,967 |  |
Non-PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 1,867 | 1,133 |  |
Current loans | 562,059 | 492,000 |  |
Non-PCI loans | 563,926 | 493,133 |  |
Non-PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 40,900 | 24,210 |  |
Current loans | 8,036,046 | 7,528,738 |  |
Non-PCI loans | 8,076,946 | 7,552,948 |  |
Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 852 | 378 |  |
Current loans | 316,072 | 244,497 |  |
Non-PCI loans | 316,924 | 244,875 |  |
Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 7,781 | 4,766 |  |
Current loans | 2,204,192 | 1,984,168 |  |
Non-PCI loans | 2,211,973 | 1,988,934 |  |
Non-PCI Loans | Commercial | Lease financing |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 877 | 1,641 |  |
Current loans | 691,038 | 570,275 |  |
Non-PCI loans | 691,915 | 571,916 |  |
Non-PCI Loans | Commercial | Other |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 195 | 2,112 |  |
Current loans | 357,565 | 351,721 |  |
Non-PCI loans | 357,760 | 353,833 |  |
Non-PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Current loans | 6,518,150 | 6,310,101 |  |
Non-PCI loans | 6,592,298 | 6,377,328 |  |
Non-PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 3,757 | 2,672 |  |
Current loans | 216,736 | 202,344 |  |
Non-PCI loans | 220,493 | 205,016 |  |
Non-PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 43,867 | 38,261 |  |
Current loans | 2,615,954 | 2,454,797 |  |
Non-PCI loans | 2,659,821 | 2,493,058 |  |
Non-PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 16,222 | 18,993 |  |
Current loans | 2,503,750 | 2,542,807 |  |
Non-PCI loans | 2,519,972 | 2,561,800 |  |
Non-PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 10,302 | 7,301 |  |
Current loans | 1,181,710 | 1,110,153 |  |
Non-PCI loans | 1,192,012 | 1,117,454 |  |
90 Days or greater | PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 31,059 | 38,723 |  |
90 Days or greater | PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 0 | 406 |  |
90 Days or greater | PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 27,499 | 34,246 |  |
90 Days or greater | PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 3,560 | 3,811 |  |
90 Days or greater | PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 0 | 260 |  |
90 Days or greater | Non-PCI Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 41,880 | 24,598 |  |
90 Days or greater | Non-PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 282 | 330 |  |
90 Days or greater | Non-PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 21,416 | 8,061 |  |
90 Days or greater | Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 159 | 102 |  |
90 Days or greater | Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 1,328 | 378 |  |
90 Days or greater | Non-PCI Loans | Commercial | Lease financing |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 310 | 2 |  |
90 Days or greater | Non-PCI Loans | Commercial | Other |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 184 | 0 |  |
90 Days or greater | Non-PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 18,201 | 15,725 |  |
90 Days or greater | Non-PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 576 | 202 |  |
90 Days or greater | Non-PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 12,048 | 8,955 |  |
90 Days or greater | Non-PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 4,255 | 5,463 |  |
90 Days or greater | Non-PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 1,322 | 1,105 |  |
60 to 89 Days past due | PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 6,541 | 10,443 |  |
60 to 89 Days past due | PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 0 | 0 |  |
60 to 89 Days past due | PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 6,103 | 10,073 |  |
60 to 89 Days past due | PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 307 | 345 |  |
60 to 89 Days past due | PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 131 | 25 |  |
60 to 89 Days past due | Non-PCI Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 18,987 | 19,548 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 266 | 283 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 4,897 | 4,782 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 290 | 70 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 961 | 1,545 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Lease financing |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 169 | 8 |  |
60 to 89 Days past due | Non-PCI Loans | Commercial | Other |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 0 | 1,966 |  |
60 to 89 Days past due | Non-PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 12,404 | 10,894 |  |
60 to 89 Days past due | Non-PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 642 | 824 |  |
60 to 89 Days past due | Non-PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 7,640 | 6,018 |  |
60 to 89 Days past due | Non-PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 2,031 | 2,433 |  |
60 to 89 Days past due | Non-PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 2,091 | 1,619 |  |
30 to 59 Days past due | PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 15,838 | 12,984 |  |
30 to 59 Days past due | PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 0 | 0 |  |
30 to 59 Days past due | PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 14,514 | 11,432 |  |
30 to 59 Days past due | PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 1,234 | 1,405 |  |
30 to 59 Days past due | PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 90 | 147 |  |
30 to 59 Days past due | Non-PCI Loans |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 65,753 | 57,321 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 1,319 | 520 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 14,587 | 11,367 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Other commercial real estate |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 403 | 206 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Commercial and industrial |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 5,492 | 2,843 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Lease financing |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 398 | 1,631 |  |
30 to 59 Days past due | Non-PCI Loans | Commercial | Other |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 11 | 146 |  |
30 to 59 Days past due | Non-PCI Loans | Noncommerical |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 43,543 | 40,608 |  |
30 to 59 Days past due | Non-PCI Loans | Noncommerical | Construction and land development |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 2,539 | 1,646 |  |
30 to 59 Days past due | Non-PCI Loans | Noncommerical | Mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 24,179 | 23,288 |  |
30 to 59 Days past due | Non-PCI Loans | Noncommerical | Revolving mortgage |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | 9,936 | 11,097 |  |
30 to 59 Days past due | Non-PCI Loans | Noncommerical | Consumer |  |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |  |
Past due loans | $ 6,889 | $ 4,577 |  |

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