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Accumulated Other Comprehensive Income (Loss)
9 Months Ended
Sep. 30, 2020
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Comprehensive Income (Loss) Note [Text Block] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Reclassifications of balances out of accumulated other comprehensive income (loss) into net income (loss) for the three months ended September 30, 2021 are summarized as follows:
(In thousands)Amount reclassified from accumulated 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$2,160 Cost of goods sold
Foreign currency forward contracts, before taxes(34)Selling, general & administrative
Foreign currency forward contracts, before taxes15 Cost of goods sold
Total, before taxes2,141 
Income tax expense (benefit)476 Income tax expense (benefit)
Total, net of tax$1,665 
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes$(4,244)(a)
Income tax expense (benefit)(927)Income tax expense (benefit)
Total, net of tax$(3,317)
(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, 2021 are summarized as follows:
(In thousands)Amount reclassified from accumulated 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$4,172 Cost of goods sold
Foreign currency forward contracts, before taxes(183)Selling, general & administrative
Foreign currency forward contracts, before taxes48 Cost of goods sold
Total, before taxes4,037 
Income tax expense (benefit)880 Income tax expense (benefit)
Total, net of tax$3,157 
Amortization of pension and other post-retirement benefits:
Actuarial gain (loss) and prior service costs, before taxes$(12,727)(a)
Income tax expense (benefit)(2,773)Income tax expense (benefit)
Total, net of tax$(9,954)
(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, 2020 are summarized as follows:
(In thousands)Amount reclassified from accumulated 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$(575)Cost of goods sold
Foreign currency forward contracts, before taxes(1,767)Selling, general & administrative
Foreign currency forward contracts, before taxes15 Cost of goods sold
Total, before taxes(2,327)
Income tax expense (benefit)(496)Income tax expense (benefit)
Total, net of tax$(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 for the nine months ended September 30, 2020 are summarized as follows:
(In thousands)Amount reclassified from accumulated 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$(2,766)Cost of goods sold
Foreign currency forward contracts, before taxes(4,359)Selling, general & administrative
Foreign currency forward contracts, before taxes46 Cost of goods sold
Total, before taxes(7,079)
Income tax expense (benefit)(1,523)Income tax expense (benefit)
Total, net of tax$(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).