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Loans and Leases (Loans Acquired By Loan Class) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | $ 1,270,818 | $ 1,029,426
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 923,076 | 781,307
Commercial | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 106,670 | 78,915
Commercial | Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 728,872 | 642,891
Commercial | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 47,826 | 41,381
Commercial | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 38,838 | 17,254
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 870 | 866
Noncommerical |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 347,742 | 248,119
Noncommerical | Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 291,254 | 213,851
Noncommerical | Revolving mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 25,776 | 30,834
Noncommerical | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | 28,151 | 2,583
Noncommerical | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Acquired | $ 2,561 | $ 851

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