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Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) - USD ($) $ in Thousands | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | May 01, 2018 | Dec. 31, 2017 | Jan. 13, 2017 | Mar. 11, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Impaired Financing Receivable, Unpaid Principal Balance | $ 1,044,148 | $ 1,199,358 |  |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Beginning balance | 762,998 | 809,169 |  |  |  |
Fair value of acquired loans |  |  |  |  | $ 15,555 | $ 199,682
Accretion | 32,188 | 39,798 |  |  |  |
Payments received and other changes, net | (136,472) | (153,786) |  |  |  |
Ending balance | 674,269 | $ 894,863 |  |  |  |
Loans on the Cost Recovery Method |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loans on cost recovery method | 2,057 |  |  | $ 1,100 |  |
Commercial |  |  |  |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Ending balance | 336,109 |  |  |  |  |
Noncommercial |  |  |  |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Ending balance | 338,160 |  |  |  |  |
HomeBancorp Inc. |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | $ 550,618 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 15,555 |  |  |
HomeBancorp Inc. | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 252,327 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 8,238 |  |  |
HomeBancorp Inc. | Noncommercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 298,291 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 7,317 |  |  |
HomeBancorp Inc. | Construction and land development | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 525 |  |  |
HomeBancorp Inc. | Mortgage | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 188,688 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 7,815 |  |  |
HomeBancorp Inc. | Mortgage | Noncommercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 296,273 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 7,317 |  |  |
HomeBancorp Inc. | Revolving mortgage | Noncommercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 51 |  |  |
HomeBancorp Inc. | Other commercial real estate | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 55,183 |  |  |
HomeBancorp Inc. | Commercial and industrial | Commercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | 7,931 |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Fair value of acquired loans |  |  | 423 |  |  |
HomeBancorp Inc. | Consumer | Noncommercial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Fair value of loans acquired |  |  | $ 1,967 |  |  |
PCI Loans |  |  |  |  |  |
Carrying Value of Acquired Impaired Loans [Roll Forward] |  |  |  |  |  |
Beginning balance | 762,998 |  |  |  |  |
Ending balance | 674,269 |  |  |  |  |
Nonaccruing | $ 1,600 |  |  | $ 600 |  |

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- Definition Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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