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Quality of Non-Covered Loans (Excluding PCI Loans) (Parenthetical) (Detail) - Non-Covered Loans - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 50,735 | $ 53,430
Loans 90 Days Or More Past Due |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total Past Due | $ 991,000 | $ 969,000

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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |