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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
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Derivatives, Fair Value [Line Items] |  |
Derivative assets |  | $ 2,985
Derivative liabilities |  | (543)
Total net derivative assets designated as hedging instruments | $ (1,965) | 2,442
Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative assets designated as hedging instruments | 2,397 | 7,342
Foreign Exchange Contracts [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 425 |
Derivative liabilities | (2,390) |
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 425 | 2,985
Derivative liabilities | (2,390) | (543)
Interest Rate Hedge [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 4,362 | 4,900
Interest Rate Hedge [Member] | Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | $ 4,362 | $ 4,900

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