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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, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | $ (178,254) |  | $ (209,018) | $ (178,254) | $ (209,018) | $ (208,719) | $ (150,195)
Cost of goods sold | 166,622 |  | 182,442 | 499,504 | 555,627 |  |
Income (loss) before income taxes | 9,379 |  | (33,341) | 24,602 | (17,195) |  |
Income taxes from continuing operations | (2,669) |  | 3,382 | 1,864 | 9,064 |  |
Net income (loss) | 12,048 |  | (36,723) | 22,738 | (26,259) |  |
Foreign Currency Translation |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (89,878) |  | (111,892) | (89,878) | (111,892) | (112,807) | (47,270)
Gain (Loss) on Derivative Financial Instruments |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | 590 |  | (1,140) | 590 | (1,140) | (373) | 656
Pension & Other Post-retirement Benefit Adjust. |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | (88,966) |  | (95,986) | (88,966) | (95,986) | $ (95,539) | $ (103,581)
Reclassification Out Of Accumulated Other Comprehensive Income | Gain (Loss) on Derivative Financial Instruments |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Income (loss) before income taxes | (145) |  | (1,323) | (1,623) | (1,821) |  |
Income taxes from continuing operations | (53) |  | (498) | (600) | (687) |  |
Net income (loss) | (92) |  | (825) | (1,023) | (1,134) |  |
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 | 160 |  | 1,338 | 1,669 | 1,867 |  |
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 | 46 | 46 |  |
Reclassification Out Of Accumulated Other Comprehensive Income | Pension & Other Post-retirement Benefit Adjust. |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Actuarial gain (loss) and prior service costs, before taxes | (3,086) | [1] | (4,028) | (9,759) | (11,997) |  |
Income taxes from continuing operations | (1,120) |  | (1,478) | (3,186) | (4,402) |  |
Net income (loss) | $ (1,966) |  | $ (2,550) | $ (6,573) | $ (7,595) |  |
[1] | (a)This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 8 for additional detail).

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