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Derivative Instruments - Additional Information (Detail) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Derivative notional amount | $ 45,430,000 | $ 51,623,000
Derivative foreign currency exchange contracts settlement date | 2 months |
Cash flow hedges [Member] | Interest rate contracts [Member] |  |
Derivative Instruments And Hedging Activities Disclosures [Line Items] |  |
Derivative notional amount | $ 3,992,000 | $ 0

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Derivative foreign currency exchange contracts settlement period. + References No definition available. + 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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- Details
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- Details
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