Hedging Transactions and Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The notional values of our copper contracts outstanding as of June 30, 2017 were:

Volume of Copper Derivatives
July 2017 - September 2017	122	metric tons per month
October 2017 - December 2017	122	metric tons per month
January 2018 - March 2018	140	metric tons per month
April 2018 - June 2018	98	metric tons per month
July 2018 - September 2018	46	metric tons per month

As of June 30, 2017 the notional values of these foreign currency forward contracts were:

Notional Values of Foreign Currency Derivatives
KRW/USD	₩	5,695,550,000
JPY/EUR	¥	266,000,000
EUR/USD	€	4,373,956
EUR/HUF	€	581,180
USD/CNY	$	6,083,500

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

Effects on Statements of Operations and of Comprehensive Income (Loss):

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2017						Fair Values of Derivative Instruments as of June 30, 2017
		Gain (Loss)						Other Assets (Liabilities)
Foreign Exchange Contracts	Location	Quarter Ended			Six Months Ended
Contracts not designated as hedging instruments	Other income (expense), net	$	(312	)	$	(291	)	$	(312	)
Copper Derivatives
Contracts not designated as hedging instruments	Other income (expense), net	$	71		$	205		$	1,331
Interest Rate Swap
Contract designated as hedging instrument	Other comprehensive income (loss)	$	(335	)	$	(515	)	$	(622	)

(Dollars in thousands)		The Effect of Current Derivative Instruments on the Financial Statements for the period ended June 30, 2016						Fair Values of Derivative Instruments as of June 30, 2016
		Gain (Loss)						Other Assets (Liabilities)
Foreign Exchange Contracts	Location	Quarter Ended			Six Months Ended
Contracts not designated as hedging instruments	Other income (expense), net	$	943		$	908		$	908
Copper Derivatives
Contracts not designated as hedging instruments	Other income (expense), net	$	(79	)	$	(103	)	$	315