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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Schedule Of After-Tax Changes In Accumulated Other Comprehensive Income (Loss) |  |  | The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the nine months ended September 30, 2020:
(In thousands) | Foreign currency translation adjustment |  | Gain (loss) on derivative financial instruments |  | Pension and other post-retirement benefit adjustments |  | Total
Beginning balance, January 1, 2020 | $ | (100,663) |  |  | $ | (1,307) |  |  | $ | (95,681) |  |  | $ | (197,651) |
Other comprehensive income (loss) before reclassifications | (11,076) |  |  | (5,860) |  |  | — |  |  | (16,936) |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | 5,556 |  |  | 8,793 |  |  | 14,349 |
Net other comprehensive income (loss) - current period | (11,076) |  |  | (304) |  |  | 8,793 |  |  | (2,587) |
Ending balance, September 30, 2020 | $ | (111,739) |  |  | $ | (1,611) |  |  | $ | (86,888) |  |  | $ | (200,238) |
| The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the nine months ended September 30, 2019:
(In thousands) | Foreign currency translation adjustment |  | Gain (loss) on derivative financial instruments |  | Pension and other post-retirement benefit adjustments |  | Total
Beginning balance, January 1, 2019 | $ | (96,940) |  |  | $ | (1,601) |  |  | $ | (81,446) |  |  | $ | (179,987) |
Other comprehensive income (loss) before reclassifications | (6,291) |  |  | (3,065) |  |  | — |  |  | (9,356) |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | 2,209 |  |  | 6,236 |  |  | 8,445 |
Net other comprehensive income (loss) - current period | (6,291) |  |  | (856) |  |  | 6,236 |  |  | (911) |
Ending balance, September 30, 2019 | $ | (103,231) |  |  | $ | (2,457) |  |  | $ | (75,210) |  |  | $ | (180,898) |
Schedule Of Reclassifications Of Balances Out Of Accumulated Other Comprehensive Income (Loss) Into Net Income | Reclassifications of balances out of accumulated other comprehensive income (loss) into net income (loss) for the three months ended September 30, 2020 are summarized as follows:
(In thousands) | Amount reclassified from other comprehensive income (loss) |  | Location of gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (loss)
Gain (loss) on derivative financial instruments: |  |  |
Aluminum future contracts, before taxes | $ | (575) |  |  | Cost of sales
Foreign currency forward contracts, before taxes | (1,767) |  |  | Selling, general & administrative
Foreign currency forward contracts, before taxes | 15 |  |  | Cost of sales
Total, before taxes | (2,327) |  |  |
Income tax expense (benefit) | (496) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (1,831) |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (3,767) |  |  | (a)
Income tax expense (benefit) | (836) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (2,931) |  |  |
(a) This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail). Reclassifications of balances out of accumulated other comprehensive income (loss) into net income (loss) for the nine months ended September 30, 2020 are summarized as follows:
(In thousands) | Amount reclassified from other comprehensive income (loss) |  | Location of gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (loss)
Gain (loss) on derivative financial instruments: |  |  |
Aluminum future contracts, before taxes | $ | (2,766) |  |  | Cost of sales
Foreign currency forward contracts, before taxes | (4,359) |  |  | Selling, general & administrative
Foreign currency forward contracts, before taxes | 46 |  |  | Cost of sales
Total, before taxes | (7,079) |  |  |
Income tax expense (benefit) | (1,523) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (5,556) |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (11,300) |  |  | (a)
Income tax expense (benefit) | (2,507) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (8,793) |  |  |
(a) This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail). | Reclassifications of balances out of accumulated other comprehensive income (loss) into net income for the three months ended September 30, 2019 are summarized as follows:
(In thousands) | Amount reclassified from other comprehensive income (loss) |  | Location of gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (loss)
Gain (loss) on derivative financial instruments: |  |  |
Aluminum future contracts, before taxes | $ | (816) |  |  | Cost of sales
Foreign currency forward contracts, before taxes | (101) |  |  | Selling, general & administrative
Foreign currency forward contracts, before taxes | 15 |  |  | Cost of sales
Total, before taxes | (902) |  |  |
Income tax expense (benefit) | (179) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (723) |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (2,672) |  |  | (a)
Income tax expense (benefit) | (593) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (2,079) |  |  |
(a) This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail). Reclassifications of balances out of accumulated other comprehensive income (loss) into net income for the nine months ended September 30, 2019 are summarized as follows:
(In thousands) | Amount reclassified from other comprehensive income (loss) |  | Location of gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (loss)
Gain (loss) on derivative financial instruments: |  |  |
Aluminum future contracts, before taxes | $ | (2,039) |  |  | Cost of sales
Foreign currency forward contracts, before taxes | (661) |  |  | Selling, general & administrative
Foreign currency forward contracts, before taxes | 46 |  |  | Cost of sales
Total, before taxes | (2,654) |  |  |
Income tax expense (benefit) | (445) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (2,209) |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (8,014) |  |  | (a)
Income tax expense (benefit) | (1,778) |  |  | Income tax expense (benefit)
Total, net of tax | $ | (6,236) |  |  |
(a) This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail). |  |

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