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Hedging Transactions and Derivative Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Notional Amounts of Outstanding Derivative Positions |
Notional Value of Copper Derivatives |  | Notional Values of Foreign Currency Derivatives
January 2014 - April 2014 | 30 | metric tons per month |  | YEN/USD | ¥200,000,000
January 2014 - June 2014 | 35 | metric tons per month |  | HUF/EUR | 230,000,000
May 2014 - December 2014 | 30 | metric tons per month |  | USD/EUR | $1,600,000
January 2014 - December 2014 | 10 | metric tons per month |  | YEN/EUR | ¥360,000,000
January 2014 - December 2014 | 5 | metric tons per month |  | YEN/EUR | ¥23,100,000
July 2014 - December 2014 | 15 | metric tons per month |  |  |
July 2014 - December 2014 | 5 | metric tons per month |  |  |
October 2014 - December 2014 | 15 | metric tons per month |  |  |
July 2014 - September 2014 | 20 | metric tons per month |  |  |
January 2014 - June 2014 | 40 | metric tons per month |  |  |
July 2014 - September 2014 | 20 | metric tons per month |  |  |
January 2015 - March 2015 | 8 | metric tons per month |  |  |
January 2015 - March 2015 | 52 | metric tons per month |  |  |
January 2015 - March 2015 | 46 | metric tons per month |  |  |
April 2015 - June 2015 | 95 | metric tons per month |  |  |
April 2014 - June 2014 | 35 | metric tons per month |  |  |
July 2014 - December 2014 | 35 | metric tons per month |  |  |
January 2014 - December 2014 | 10 | metric tons per month |  |  |
July 2014 - December 2014 | 25 | metric tons per month |  |  |
October 2014 - December 2014 | 20 | metric tons per month |  |  |
January 2015 - March 2015 | 40 | metric tons per month |  |  |
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance |
(Dollars in thousands) |  |  |  | The Effect of Current Derivative Instruments on the Financial Statements for the period ended March 31, 2014
|  |  |  | Amount of gain (loss)
Foreign Exchange Contracts |  | Location of gain (loss) |  | Three months ended
Contracts designated as hedging instruments |  | Other comprehensive income (loss) |  | $ | (7 | )
Copper Derivative Instruments |  |  |  |
Contracts not designated as hedging instruments |  | Other income (expense), net |  | (1,027 | )
Interest Rate Swap Instrument |  |  |  |
Contracts designated as hedging instruments |  | Other comprehensive income (loss) |  | (269 | )
(Dollars in thousands) |  |  | The Effect of Current Derivative Instruments on the Financial Statements for the period ended March 31, 2013
|  |  | Amount of gain (loss)
Foreign Exchange Contracts |  | Location of gain (loss) | Three months ended |
Contracts not designated as hedging instruments |  | Other income (expense), net | $ | 5 |  |
Copper Derivative Instruments |  |  |  |
Contracts not designated as hedging instruments |  | Other income (expense), net | (183 | ) |
Interest Rate Swap Instrument |  |  |  |
Contracts designated as hedging instruments |  | Other comprehensive income (loss) | (9 | ) |

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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 + Details
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