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Basis of Presentation and Summary of Significant Accounting Policies - Gains (Losses) on Foreign Exchange Contracts (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cost of Sales [Member] | Foreign Currency Exchange Contract [Member] |  |  |
Derivative [Line Items] |  |  |
Realized (losses) gains on closed contracts | $ (6,684) | $ 3,894 | $ (10,401)
Unrealized (losses) gains on open contracts | (105) | 1,054 | (883)
Cumulative net pre-tax (losses) gains | (6,789) | $ 4,948 | $ (11,284)
Interest Income [Member] | Cross Currency Interest Rate Contract [Member] |  |  |
Derivative [Line Items] |  |  |
Interest earned | 2,713 |  |
Stockholders' Equity [Member] | Cross Currency Interest Rate Contract [Member] |  |  |
Derivative [Line Items] |  |  |
Unrealized (losses) gains on open contracts | $ 1,093 |  |

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