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Derivative Financial Instruments (Narrative) (Details)
R$ in Thousands, $ in Thousands, lbs in Millions
9 Months Ended
Sep. 30, 2024
USD ($)
lbs
Sep. 30, 2024
BRL (R$)
Sep. 30, 2024
BRL (R$)
lbs
Dec. 31, 2023
USD ($)
lbs
Derivative [Line Items]        
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months $ 100      
Aluminum Futures Contracts        
Derivative [Line Items]        
Derivative, Notional Amount $ 6,000     $ 7,700
Commitment Under Cash Flow Hedges, Mass | lbs 4.3   4.3 5.6
Terphane Ltda [Member]        
Derivative [Line Items]        
Derivative, Notional Amount $ 5,489   R$ 29,861  
Terphane Ltda [Member] | Oct-2018 [Member]        
Derivative [Line Items]        
Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar | R$   R$ 139,000