Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Contracts not designated as hedging instruments | Other income (expense), net | Foreign Exchange Contracts
Derivative [Line Items]
Effect of current derivative instruments	$ 943	$ (125)	$ 908	$ (398)
Fair Values of Derivative Instruments	908	(39)	908	(39)
Contracts not designated as hedging instruments | Other income (expense), net | Copper Derivatives
Derivative [Line Items]
Effect of current derivative instruments	(79)	(157)	(103)	(449)
Fair Values of Derivative Instruments	315	436	315	436
Contracts designated as hedging instruments | Other comprehensive income (loss) | Foreign Exchange Contracts
Derivative [Line Items]
Effect of current derivative instruments		(335)		(100)
Fair Values of Derivative Instruments		274		274
Contracts designated as hedging instruments | Other comprehensive income (loss) | Interest Rate Swap
Derivative [Line Items]
Effect of current derivative instruments	0	35	0	51
Fair Values of Derivative Instruments	$ 0	$ (93)	$ 0	$ (93)