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Derivative Financial Instruments (Narrative) (Details)
R$ in Thousands, $ in Thousands, lbs in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
lbs
Jun. 30, 2023
BRL (R$)
Jun. 30, 2023
BRL (R$)
lbs
Dec. 31, 2022
USD ($)
lbs
Derivative [Line Items]        
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months $ (1,800)      
Aluminum Futures Contracts        
Derivative [Line Items]        
Derivative, Notional Amount $ 17,000     $ 30,700
Commitment Under Cash Flow Hedges, Mass | lbs 11.1   11.1 20.3
Terphane Ltda [Member]        
Derivative [Line Items]        
Derivative, Notional Amount $ 19,970   R$ 115,443  
Terphane Ltda [Member] | Oct-2018 [Member]        
Derivative [Line Items]        
Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar | R$   R$ 177,000