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Disclosures about Fair Value of Assets and Liabilities - Other Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
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Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | $ 4,873 | $ 6,803
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | 9,093 | 8,874
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | 4,873 | 6,803
Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | 9,093 | 8,874
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | 4,873 | 6,803
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |
Impaired loans | $ 9,093 | $ 8,874

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- Definition Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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