Hedging Transactions and Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 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	¥350,000,000
July 2013 - November 2013	40	metric tons per month	HUF/EUR	290,000,000
December 2013 - March 2014	30	metric tons per month
January 2014 - April 2014	30	metric tons per month
September 2013 - December 2013	30	metric tons per month
January 2014 - June 2014	75	metric tons per month
January 2014 - December 2014	10	metric tons per month
April 2014 - June 2014	35	metric tons per month
May 2014 - December 2014	30	metric tons per month
July 2014 - September 2014	40	metric tons per month
July 2014 - December 2014	35	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 September 30, 2013
		Amount of gain (loss)
Foreign Exchange Contracts	Location of gain (loss)	Three months ended			Nine months ended
Contracts not designated as hedging instruments	Other income, net	$	28		$	224
Copper Derivative Instruments
Contracts not designated as hedging instruments	Other income, net	(33		)	(378		)
Interest Rate Swap Instrument
Contracts designated as hedging instruments	Other comprehensive income (loss)	(82		)	30

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the period ended September 30, 2012
		Amount of gain (loss)
Foreign Exchange Contracts	Location of gain (loss)	Three months ended			Nine months ended
Contracts not designated as hedging instruments	Other income, net	$	28		$	109
Copper Derivative Instruments
Contracts designated as hedging instruments	Other comprehensive income (loss)	(191		)	(2		)
Contracts not designated as hedging instruments	Other income, net	5			5
Interest Rate Swap Instrument
Contracts designated as hedging instruments	Other comprehensive income (loss)	(355		)	(355		)