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Accumulated Other Comprehensive Income (Loss) (Schedule Of Reclassifications Of Balances Out Of Accumulated Other Comprehensive Income (Loss) Into Net Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Selling, general and administrative | $ 16,767 | $ 20,420 | $ 55,422 | $ 61,654
Income before income taxes | (8,137) | 22,918 | (47,304) | 31,616
Income taxes from continuing operations | (1,908) | 5,942 | (10,728) | 8,308
Net income (loss) | 6,203 | (65,213) | 36,472 | (76,339)
Reclassification Out Of Accumulated Other Comprehensive Income | Gain (Loss) on Derivative Financial Instruments |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Income before income taxes | (2,141) | 2,327 | (4,037) | 7,079
Income taxes from continuing operations | (476) | 496 | (880) | 1,523
Net income (loss) | 1,665 | (1,831) | 3,157 | (5,556)
Reclassification Out Of Accumulated Other Comprehensive Income | Gain (Loss) on Derivative Financial Instruments | Aluminum Futures Contracts |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Cost of goods sold | 2,160 | (575) | 4,172 | (2,766)
Reclassification Out Of Accumulated Other Comprehensive Income | Pension & Other Post-retirement Benefit Adjustment |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Actuarial gain (loss) and prior service costs, before taxes | (4,244) | (3,767) | (12,727) | (11,300)
Income taxes from continuing operations | 927 | 836 | 2,773 | 2,507
Net income (loss) | (3,317) | (2,931) | (9,954) | (8,793)
Selling, general & admin | Reclassification Out Of Accumulated Other Comprehensive Income | Gain (Loss) on Derivative Financial Instruments | Foreign Currency Forward Contracts |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Selling, general and administrative | (34) | (1,767) | (183) | (4,359)
Cost of Sales [Member] | Reclassification Out Of Accumulated Other Comprehensive Income | Gain (Loss) on Derivative Financial Instruments | Foreign Currency Forward Contracts |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |
Cost of goods sold | $ 15 | $ 15 | $ 48 | $ 46

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