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Loans and Leases (Loans Acquired By Loan Class) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | $ 762,998 | $ 809,169 | $ 950,516
Commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 396,938 | 499,970 |
Commercial | Construction and land development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 13,654 | 20,766 |
Commercial | Mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 358,103 | 453,013 |
Commercial | Other commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 17,124 | 12,645 |
Commercial | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 6,374 | 11,844 |
Commercial | Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 1,683 | 1,702 |
Noncommercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | 366,060 | 309,199 |
Noncommercial | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
PCI Loans | $ 2,190 | $ 1,772 |

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- Definition The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for loans accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 + Details
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