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Accumulated Other Comprehensive Income (Loss)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Comprehensive Income (Loss) Note [Text Block]  
The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2021:
(In thousands)Foreign
currency
translation
adjustment
Gain (loss) on
derivative
financial
instruments
Pension and other post-retirement benefit adjustmentsTotal
Beginning balance, January 1, 2021$(84,149)$2,264 $(96,519)$(178,404)
Other comprehensive income (loss) before reclassifications(2,648)273 — (2,375)
Amounts reclassified from accumulated other comprehensive income (loss)— (509)3,319 2,810 
Net other comprehensive income (loss) - current period(2,648)(236)3,319 435 
Ending balance, March 31, 2021$(86,797)$2,028 $(93,200)$(177,969)

The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2020:
(In thousands)Foreign
currency
translation
adjustment
Gain (loss) on
derivative
financial
instruments
Pension and other post-retirement benefit adjustmentsTotal
Beginning balance, January 1, 2020$(100,663)$(1,307)$(95,681)$(197,651)
Other comprehensive income (loss) before reclassifications(11,529)(4,888)— (16,417)
Amounts reclassified from accumulated other comprehensive income (loss)— 1,113 2,931 4,044 
Net other comprehensive income (loss) - current period(11,529)(3,775)2,931 (12,373)
Ending balance, March 31, 2020$(112,192)$(5,082)$(92,750)$(210,024)
Reclassifications of balances out of accumulated other comprehensive income (loss) into net income (loss) for the three months ended March 31, 2021 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$640 Cost of sales
Foreign currency forward contracts, before taxes(2)Selling, general & administrative
Foreign currency forward contracts, before taxes17 Cost of sales
Total, before taxes655 
Income tax expense (benefit)146 Income tax expense (benefit)
Total, net of tax$509 
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes$(4,243)(a)
Income tax expense (benefit)(924)Income tax expense (benefit)
Total, net of tax$(3,319)
(a)    This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail).
Reclassifications of balances out of accumulated other comprehensive income (loss) into net income for the three months ended March 31, 2020 are summarized as follows:
(In thousands)Amount reclassified from other comprehensive income (loss)Location of gain (loss) reclassified from accumulated other comprehensive income (loss) to net income (loss)
Gain (loss) on derivative financial instruments:
Aluminum future contracts, before taxes$(640)Cost of sales
Foreign currency forward contracts, before taxes(794)Selling, general & administrative
Foreign currency forward contracts, before taxes15 Cost of sales
Total, before taxes(1,419)
Income tax expense (benefit)(306)Income tax expense (benefit)
Total, net of tax$(1,113)
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes$(3,767)(a)
Income tax expense (benefit)(836)Income tax expense (benefit)
Total, net of tax$(2,931)
(a)    This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost (see Note 9 for additional detail).
Cost of goods sold
The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2021:
(In thousands)Foreign
currency
translation
adjustment
Gain (loss) on
derivative
financial
instruments
Pension and other post-retirement benefit adjustmentsTotal
Beginning balance, January 1, 2021$(84,149)$2,264 $(96,519)$(178,404)
Other comprehensive income (loss) before reclassifications(2,648)273 — (2,375)
Amounts reclassified from accumulated other comprehensive income (loss)— (509)3,319 2,810 
Net other comprehensive income (loss) - current period(2,648)(236)3,319 435 
Ending balance, March 31, 2021$(86,797)$2,028 $(93,200)$(177,969)
The following table summarizes the after-tax changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2020:
(In thousands)Foreign
currency
translation
adjustment
Gain (loss) on
derivative
financial
instruments
Pension and other post-retirement benefit adjustmentsTotal
Beginning balance, January 1, 2020$(100,663)$(1,307)$(95,681)$(197,651)
Other comprehensive income (loss) before reclassifications(11,529)(4,888)— (16,417)
Amounts reclassified from accumulated other comprehensive income (loss)— 1,113 2,931 4,044 
Net other comprehensive income (loss) - current period(11,529)(3,775)2,931 (12,373)
Ending balance, March 31, 2020$(112,192)$(5,082)$(92,750)$(210,024)