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Financial Instruments (Summary Of Location And Fair Value Of Derivative Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Net asset (liability)	$ (80)	$ (483)
Aluminum Futures Contracts
Derivatives, Fair Value [Line Items]
Net asset (liability)	115	(492)
Aluminum Futures Contracts | Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Asset derivatives	172	0
Aluminum Futures Contracts | Designated as Hedging Instrument | Accrued Expenses
Derivatives, Fair Value [Line Items]
Liability derivatives: Aluminum futures contracts	(57)	(483)
Aluminum Futures Contracts | Designated as Hedging Instrument | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability derivatives: Aluminum futures contracts	$ 0	$ (9)

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- Definition

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