Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar

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Commitment Under Cash Flow Hedges, Mass

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal or face amount used to calculate payment on derivative.

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Fair value as of the balance sheet date of all foreign currency derivatives designated as cash flow hedging instruments.

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Derivative Financial Instruments (Narrative) (Details) R$ in Thousands, $ in Thousands, lbs in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021 BRL (R$)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($) lbs	Jun. 30, 2021 BRL (R$) lbs	Dec. 31, 2020 USD ($) lbs
Derivative [Line Items]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax			$ 800
Amounts of unrealized after tax gains (losses) to be Reclassified within Twelve Months		$ (2,400)
Aluminum Futures Contracts
Derivative [Line Items]
Derivative, Notional Amount			$ 13,900		$ 12,100
Commitment Under Cash Flow Hedges, Mass \| lbs			12.4	12.4	13.0
Terphane Ltda [Member]
Derivative [Line Items]
Derivative, Notional Amount			$ 8,465	R$ 46,619
Accrued Expenses [Member] \| Derivatives Designated As Hedging Instruments [Member] \| Aluminum Futures Contracts
Derivative [Line Items]
Derivative Asset, Fair Value, Gross Asset			3,244		$ 1,560
Derivative Liability, Fair Value, Gross Liability			$ 8		$ 22
Oct-2018 [Member] \| Terphane Ltda [Member]
Derivative [Line Items]
Annual Net Costs Mismatch Translation Exposure - Real vs US Dollar \| R$	R$ 119,000