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Loans - Summary of Information Pertaining to Nonaccrual Noncovered Loans (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual non-covered acquired loans | $ 24,759 | $ 21,947
Non-Covered Acquired Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual non-covered acquired loans | 12,743 | 10,188
Non-Covered Acquired Loans [Member] | ASC 310-30 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual non-covered acquired loans | $ 5,500 | $ 3,400

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- Details
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Balance Type: | na
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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Balance Type: | debit
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