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Derivative Financial Instruments (Narrative) (Details) R$ in Thousands, $ in Thousands, lbs in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2024 USD ($) lbs | Jun. 30, 2024 BRL (R$) | Jun. 30, 2024 BRL (R$) lbs | Dec. 31, 2023 USD ($) lbs
Derivative [Line Items] |  |  |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ (200) |  |  |
Aluminum Futures Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, Notional Amount | $ 4,900 |  |  | $ 7,700
Commitment Under Cash Flow Hedges, Mass | lbs | 3.6 |  | 3.6 | 5.6
Terphane Ltda [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative, Notional Amount | $ 10,956 |  | R$ 59,378 |
Terphane Ltda [Member] | Oct-2018 [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar | R$ |  | R$ 139,000 |  |

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