Hedging Transactions and Derivative Financial Instruments - Effect and Fair Value of Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Foreign Exchange Option Contracts
Derivative [Line Items]
Foreign Exchange option contracts not designated as hedging instruments, amount of gain (loss)	$ 109
Foreign Exchange option contracts not designated as hedging instruments, other assets (liabilities)	28
Copper Derivative Instruments
Derivative [Line Items]
Copper Derivative instruments designated as hedging instruments, amount of gain (loss)	(2)
Copper Derivative instruments designated as hedging instruments, other assets (liabilities)	(2)
Copper Derivative Instruments not designated as hedging instruments, amount of gain (loss)	5
Copper Derivative Instruments not designated as hedging instruments, other assets (liabilities)	5
Interest Rate Swap Instrument
Derivative [Line Items]
Interest Rate Swap Instrument designated as hedging instruments, amoint of gain (loss)	(355)
Interest Rate Swap Instrument designated as hedging instruments, other assets (liabilities)	$ (355)

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Net gain (loss) from the increase (decrease) in fair value of derivative instrument not designated as hedging instrument.

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Fair value as of the balance sheet date of all foreign currency derivatives not designated as hedging instruments.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Fair value as of the balance sheet date of all interest rate derivatives designated as cash flow hedging instruments.

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Fair value as of the balance sheet date of all price risk derivatives designated as cash flow hedging instruments.

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Amount of unrealized gain (loss) arising from the change in fair value of price risk derivatives designated as cash flow hedging instruments recorded in accumulated other comprehensive income in the period, before taxes, to the extent that the cash flow hedge is determined to be effective.

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