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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
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 three months ended March 31, 2018:
(In thousands) | Foreign currency translation adjustment |  | Gain (loss) on derivative financial instruments |  | Pension and other post-retirement benefit adjustments |  | Total
Beginning balance, January 1, 2018 | $ | (86,178 | ) |  | $ | 459 |  |  | $ | (90,950 | ) |  | $ | (176,669 | )
Other comprehensive income (loss) before reclassifications | 1,906 |  |  | (132 | ) |  | — |  |  | 1,774 |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | (153 | ) |  | 2,612 |  |  | 2,459 |
Net other comprehensive income (loss) - current period | 1,906 |  |  | (285 | ) |  | 2,612 |  |  | 4,233 |
Ending balance, March 31, 2018 | $ | (84,272 | ) |  | $ | 174 |  |  | $ | (88,338 | ) |  | $ | (172,436 | )
The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2017:
(In Thousands) | Foreign currency translation adjustment |  | Gain (loss) on derivative financial instruments |  | Pension and other post-retirement benefit adjustments |  | Total
Beginning balance, January 1, 2017 | $ | (93,970 | ) |  | $ | 863 |  |  | $ | (90,127 | ) |  | $ | (183,234 | )
Other comprehensive income (loss) before reclassifications | 4,632 |  |  | 528 |  |  | — |  |  | 5,160 |
Amounts reclassified from accumulated other comprehensive income (loss) | — |  |  | (154 | ) |  | 1,950 |  |  | 1,796 |
Net other comprehensive income (loss) - current period | 4,632 |  |  | 374 |  |  | 1,950 |  |  | 6,956 |
Ending balance, March 31, 2017 | $ | (89,338 | ) |  | $ | 1,237 |  |  | $ | (88,177 | ) |  | $ | (176,278 | )
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 for the three months ended March 31, 2018 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 | $ | 232 |  |  | Cost of sales
Foreign currency forward contracts, before taxes | (41 | ) |  | Selling, general & administrative
Foreign currency forward contracts, before taxes | 15 |  |  | Cost of sales
Total, before taxes | 206 |  |  |
Income tax expense (benefit) | 53 |  |  | Income taxes
Total, net of tax | $ | 153 |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (3,374 | ) |  | (a)
Income tax expense (benefit) | (762 | ) |  | Income taxes
Total, net of tax | $ | (2,612 | ) |  |
(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 March 31, 2017 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 | $ | 233 |  |  | Cost of sales
Foreign currency forward contracts, before taxes | 15 |  |  | Cost of sales
Total, before taxes | 248 |  |  |
Income tax expense (benefit) | 94 |  |  | Income taxes
Total, net of tax | $ | 154 |  |  |
Amortization of pension and other post-retirement benefits: |  |  |
Actuarial gain (loss) and prior service costs, before taxes | $ | (3,061 | ) |  | (a)
Income tax expense (benefit) | (1,111 | ) |  | Income taxes
Total, net of tax | $ | (1,950 | ) |  |
(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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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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