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Loans - Impaired Loans Classified as Troubled Debt Restructured (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) Contract | Dec. 31, 2014 Contract
Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts Modified in the Last 12 Months | Contract | 1 | 0
Pre-Modification Outstanding Recorded Investment | $ 25 |
Post-Modification Outstanding Recorded Investment | $ 24 |
Commercial Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts Modified in the Last 12 Months | Contract | 1 | 0
Pre-Modification Outstanding Recorded Investment | $ 528 |
Post-Modification Outstanding Recorded Investment | $ 430 |

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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524 + Details
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