Hedging Transactions and Derivative Financial Instruments (Tables)

3 Months Ended

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		)