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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
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Derivatives, Fair Value [Line Items] |  |
Derivative assets | $ 322 | $ 1,486
Derivative liabilities | (3,047) | (263)
Total net derivative (liabilities) assets | (2,780) | 1,223
Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Total net derivative (liabilities) assets | (2,725) | 1,223
Forward Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 250 | 1,486
Derivative liabilities | (3,030) | $ (263)
Foreign Currency Option Contracts [Member] | Derivatives Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets | 72 |
Derivative liabilities | $ (17) |

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