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Financial Instruments and Derivatives - Additional Information (Details)
MMBTU in Millions
1 Months Ended 6 Months Ended
May 21, 2021
USD ($)
May 13, 2021
USD ($)
Mar. 31, 2020
USD ($)
Jul. 04, 2021
USD ($)
MMBTU
T
Jun. 28, 2020
USD ($)
May 25, 2021
USD ($)
May 25, 2021
EUR (€)
Apr. 28, 2021
USD ($)
Apr. 07, 2021
EUR (€)
Dec. 31, 2020
USD ($)
Jan. 31, 2020
USD ($)
Derivative [Line Items]                      
Fair value of commodity cash flow hedges, gain (loss)       $ 5,381,000           $ (647,000)  
Commodity gain (loss) expected to be reclassified to the income statement during the next 12 months       3,478,000              
Fair value of foreign currency cash flow hedges, gain (loss)       763,000           555,000  
Foreign currency gain (loss) expected to be reclassified to the income statement during the next 12 months       763,000              
Proceeds from foreign exchange forward contracts and interest rate swaps       4,387,000 $ 14,480,000            
Total fair value of other derivatives not designated as hedging instruments       172,000           599,000  
1.0% Euro loan due May 2021                      
Derivative [Line Items]                      
Outstanding balance       $ 0   $ 177,780,000       183,662,000  
Interest rate (percent)       1.00%   1.00% 1.00%        
Debt principal | €             € 150,000,000        
5.75% debentures due November 2040                      
Derivative [Line Items]                      
Amount offered to be repurchased               $ 300,000,000      
Outstanding balance       $ 536,165,000       $ 600,000,000   599,279,000  
Interest rate (percent)       5.75%       5.75%      
Natural Gas Swaps                      
Derivative [Line Items]                      
Approximate amount of commodity covered by swap contracts outstanding (in MMBTUs) | MMBTU       5.5              
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)       62.00%              
Anticipated usage percentage covered by a swap contract for the next fiscal year (percent)       41.00%              
Aluminum Swaps                      
Derivative [Line Items]                      
Anticipated usage percentage covered by a swap contract for the current fiscal year (percent)       53.00%              
Approximate amount of commodity covered by swap contracts outstanding (in tons) | T       1,810              
Forward contracts                      
Derivative [Line Items]                      
Fair value of foreign currency cash flow hedges, gain (loss)       $ (274,000)           $ 47,000  
Foreign currency gain (loss) expected to be reclassified to the income statement during the next 12 months       (271,000)              
Foreign currency gain (loss) reclassified to the income statement       $ 62,000              
Cross-currency swap                      
Derivative [Line Items]                      
Notional amount                 € 150,000,000   $ 250,000,000
Gain (loss) on derivative $ 4,387,000                    
Proceeds from foreign exchange forward contracts and interest rate swaps     $ 14,480,000                
Tax provision on foreign currency translation gain     $ 7,581,000                
Reverse Treasury Lock Contract                      
Derivative [Line Items]                      
Notional amount               $ 100,000,000      
Gain (loss) on derivative   $ (1,356,000)