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Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Not Designated as Hedging Instrument | Other income (expense), net | Foreign Exchange Contracts |  |
Derivative [Line Items] |  |
Effect of current derivative instruments | $ (333) | $ (7)
Fair values of derivative instruments | 522 | (396)
Not Designated as Hedging Instrument | Other income (expense), net | Copper Derivatives |  |
Derivative [Line Items] |  |
Effect of current derivative instruments | (2,101) | 1,928
Fair values of derivative instruments | 583 | 2,016
Designated as Hedging Instrument | Other comprehensive income (loss) | Interest Rate Swap |  |
Derivative [Line Items] |  |
Effect of current derivative instruments | 420 | 41
Fair values of derivative instruments | $ 461 | $ 41

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 + Details
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