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Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Contracts not designated as hedging instruments | Other income (expense), net | Foreign Currency Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss) | $ 181 | $ 29 | $ (406) | $ (95)
Contracts not designated as hedging instruments | Other income (expense), net | Copper Derivative Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss) | (543) | (453) | (1,008) | (1,637)
Contract designated as hedging instrument | Other comprehensive income (loss) | Interest rate swap |  |  |  |
Derivative [Line Items] |  |  |  |
The Effect of Current Derivative Instruments on the Financial Statements, Gain (Loss) | (240) | 270 | (1,985) | 1,669
Level 2 | Fair Value, Measurements, Recurring | Foreign Currency Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | 189 | 342 | 189 | 342
Level 2 | Fair Value, Measurements, Recurring | Copper Derivative Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | 518 | 631 | 518 | 631
Level 2 | Fair Value, Measurements, Recurring | Interest rate swap |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | $ (1,524) | $ 1,710 | $ (1,524) | $ 1,710

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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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