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Derivative Instruments and Hedging Activities - Open Foreign Currency Contracts (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Derivative [Line Items] |  |
Derivative, Fair Value, Net | $ 298 | $ 2,599
Cash Flow Hedging | Foreign currency contracts |  |
Derivative [Line Items] |  |
Notional Amounts (in U.S. dollars) | 106,965 |
Derivative, Fair Value, Net | 298 |
Australian Dollar | Cash Flow Hedging | Foreign currency contracts |  |
Derivative [Line Items] |  |
Notional Amounts (in U.S. dollars) | 22,498 |
Derivative, Fair Value, Net | 771 |
Canadian Dollar | Cash Flow Hedging | Foreign currency contracts |  |
Derivative [Line Items] |  |
Notional Amounts (in U.S. dollars) | 65,154 |
Derivative, Fair Value, Net | 1,357 |
Japanese Yen | Cash Flow Hedging | Foreign currency contracts |  |
Derivative [Line Items] |  |
Notional Amounts (in U.S. dollars) | 1,371 |
Derivative, Fair Value, Net | (57) |
Mexican Peso | Cash Flow Hedging | Foreign currency contracts |  |
Derivative [Line Items] |  |
Notional Amounts (in U.S. dollars) | 17,942 |
Derivative, Fair Value, Net | $ (1,773) |

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