Hedging Transactions and Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

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 2013 - December 2013	55	metric tons per month	YEN/USD	¥300,000,000
July 2013 - November 2013	40	metric tons per month	USD/EUR	$900,000
December 2013 - March 2014	30	metric tons per month	HUF/EUR	290,000,000
January 2014 - April 2014	30	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 June 30, 2013
		Amount of gain (loss)
Foreign Exchange Contracts	Location of gain (loss)	Three months ended			Six months ended
Contracts not designated as hedging instruments	Other income, net	$	(14	)	$	(9	)
Copper Derivative Instruments
Contracts not designated as hedging instruments	Other income, net	(162		)	(345		)
Interest Rate Swap Instrument
Contracts designated as hedging instruments	Other comprehensive income (loss)	121			112

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2012
		Amount of gain (loss)
Foreign Exchange Contracts	Location of gain (loss)	Three months ended			Six months ended
Contracts not designated as hedging instruments	Other income, net	$	—		$	81
Copper Derivative Instruments
Contracts designated as hedging instruments	Other comprehensive income (loss)	(66		)	189