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Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 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) | $ 125 | $ (60) | $ (586) | $ (124)
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) | (775) | (363) | (465) | (1,185)
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) | (1,113) | 410 | (1,745) | 1,399
Level 2 | Fair Value, Measurements, Recurring | Foreign Currency Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | (184) | 118 | (184) | 118
Level 2 | Fair Value, Measurements, Recurring | Copper Derivative Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | 762 | 827 | 762 | 827
Level 2 | Fair Value, Measurements, Recurring | Interest rate swap |  |  |  |
Derivative [Line Items] |  |  |  |
Fair Value of Derivative Instruments, Other Assets/(Other Liabilities) | $ (1,284) | $ 1,439 | $ (1,284) | $ 1,439

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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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