Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Foreign Exchange Contract [Member]
Derivative [Line Items]
Contracts not designated as hedging instruments, Other income (expense), net, Amount of gain (loss)	$ 71	$ 28	$ (83)	$ 224
Copper Derivative Instruments [Member]
Derivative [Line Items]
Contracts not designated as hedging instruments, Other income (expense), net, Amount of gain (loss)	(390)	(33)	(1,053)	(378)
Interest Rate Swap Instrument [Member]
Derivative [Line Items]
Contracts designated as hedging instruments, Other comprehensive income (loss), Amount of gain (loss)	$ 82	$ (82)	$ 121	$ 30