Hedging Transactions and Derivative Financial Instruments (Effect and Fair Value of Derivative Instruments) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Other income, net [Member] | Foreign Exchange Option Contracts [Member]
Derivative [Line Items]
Foreign Exchange Contracts, Not designated as hedging instruments, Amount of gain (loss)	$ (19)	$ (79)
Foreign Exchange Contracts, Not designated as hedging instruments, Other assets (liabilities)	(19)	(79)
Other income, net [Member] | Copper Derivative Instruments [Member]
Derivative [Line Items]
Copper Derivative Instruments, Not designated as hedging instruments, Amount of gain (loss)	(605)	(373)
Copper Derivative Instruments, Not designated as hedging instruments, Other assets (liabilities)	355	984
Other comprehensive income (loss) [Member] | Foreign Exchange Option Contracts [Member]
Derivative [Line Items]
Foreign Exchange Contracts, Designated as hedging instruments, Amount of gain (loss)		(24)
Foreign Exchange Contracts, Designated as hedging instruments, Other assets (liabilities)		2
Other comprehensive income (loss) [Member] | Interest Rate Swap Instrument [Member]
Derivative [Line Items]
Foreign Exchange Contracts, Designated as hedging instruments, Amount of gain (loss)		(296)
Interest Rate Swap Instrument, Designated as hedging instruments, Amount of gain (loss)	152
Interest Rate Swap Instrument, Designated as hedging instruments, Other assets (liabilities)	$ (144)	$ (296)