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Derivative Financial Instruments (Narrative) (Details)
R$ in Thousands, $ in Thousands, lbs in Millions
9 Months Ended
Sep. 30, 2022
USD ($)
lbs
Sep. 30, 2022
BRL (R$)
Sep. 30, 2022
BRL (R$)
lbs
Dec. 31, 2021
USD ($)
lbs
Derivative [Line Items]        
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months $ (3,700)      
Aluminum Futures Contracts        
Derivative [Line Items]        
Derivative, Notional Amount $ 33,700     $ 22,100
Commitment Under Cash Flow Hedges, Mass | lbs 18.4   18.4 14.9
Terphane Ltda [Member]        
Derivative [Line Items]        
Derivative, Notional Amount $ 36,381   R$ 206,789  
Terphane Ltda [Member] | Oct-2018 [Member]        
Derivative [Line Items]        
Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar | R$   R$ 150,000