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Derivatives - Schedule of Changes in Fair Value of Derivative Assets and Liabilities (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Derivative [Line Items] |  |  |  |
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | $ (13) | $ 470 | $ (49) | $ (1,075)
Derivative Instruments Designated As Hedging Instruments Interest Income |  | 404 |  |
Derivative, Net Hedge Ineffectiveness Gain (Loss) | 9 | 16 |  |
Interest Rate Swap [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Instruments Designated As Hedging Instruments Interest Income | 35 |  | 420 | 1,258
Derivative, Net Hedge Ineffectiveness Gain (Loss) |  |  | 82 | 57
Forward Contracts [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, Net Hedge Ineffectiveness Gain (Loss) | 61 | 0 | (34) | 0
Foreign Exchange [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, Net Hedge Ineffectiveness Gain (Loss) | $ 2 | $ 7 | $ 3 | $ 14

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- Definition Derivative Instruments Designated As Hedging Instruments Interest Income + References No definition available. + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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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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- Definition Amount of gain (loss) from the ineffectiveness of the hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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