Derivative Financial Instruments (Summary Of Location And Fair Value Of Derivative Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 93
Derivative Asset, Fair Value, Gross Liability		$ (1,255)
Aluminum Futures Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	(6,230)	1,966
Derivatives Designated As Hedging Instruments [Member] \| Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives: Fair Value	363	1,255
Derivatives Designated As Hedging Instruments [Member] \| Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	397	0
Derivatives Designated As Hedging Instruments [Member] \| Other Noncurrent Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	59	0
Derivatives Designated As Hedging Instruments [Member] \| Aluminum Futures Contracts \| Accrued Expenses [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives: Fair Value	(5,016)	(119)
Derivatives Designated As Hedging Instruments [Member] \| Aluminum Futures Contracts \| Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	8	2,085
Derivatives Designated As Hedging Instruments [Member] \| Aluminum Futures Contracts \| Other non-current liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives: Fair Value	$ (1,222)	$ 0

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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