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Derivative Financial Instruments (Summary Of Location And Fair Value Of Derivative Financial Instruments) (Details) (Derivatives Designated As Hedging Instrument [Member], USD $)	Mar. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Net asset (liability), Fair Value	$ (291,000)	$ 138,000
Aluminum Futures Contracts [Member] | Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives: Fair Value		226,000
Liability derivatives: Fair Value	291,000	88,000
Foreign Currency Forward Contracts [Member] | Prepaid Expenses And Other [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives: Fair Value, Current	$ 559,000	$ 948,000

X

- Definition

Fair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer, net of the effects of master netting arrangements.

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X

- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

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