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Fair Value - Quantitative Information About Level 3 Fair Value Measurements (Detail) - Pooled Trust Preferred [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Fair value | $ 2,049
Collateral Default Rate [Member] | Discounted Cash Flow [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Input utilized two | 0.5% in 2016 and thereafter
Yield (Weighted Average) [Member] | Discounted Cash Flow [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Input utilized one | 10.00%
Prepayment Speed [Member] | Discounted Cash Flow [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Input utilized two | 2.0% constant prepayment rate in 2016 and thereafter

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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=66048111&loc=d3e19207-110258 + Details
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