Debt Instrument, Arrangement Fee, Paid at End of Availability Period

No definition available.

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- Definition

Debt Instrument, Arrangement Fee, Paid Upfront

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Arrangement Fee, Percentage of Facility

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Initial Payment Period after First Drawdown of Funds

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Periodic Payment, Percentage To Be Paid Before Termination Date

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Periodic Payment, Quarterly Installment Percent of Principal

+ References

No definition available.

+ Details

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- Definition

The amount of additional borrowings provided in credit facility under a letter of credit sub-facility.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Remaining Borrowing Capacity, Net of Letters of Credit

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

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+ Details

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Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Details

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- Details

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- Details

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Debt - Credit Facility (Details) - USD ($)	Nov. 02, 2021	Dec. 31, 2021	Dec. 23, 2021	Nov. 05, 2021	Apr. 29, 2019
U.S revolving credit facility
Line of Credit Facility [Line Items]
Credit facility face amount			$ 220,000,000.0
Letter of Credit
Line of Credit Facility [Line Items]
Credit facility face amount			$ 110,000,000
Hawesville
Line of Credit Facility [Line Items]
Due to related parties					$ 40,000,000
Revolving Credit Facility \| U.S revolving credit facility
Line of Credit Facility [Line Items]
Credit facility maximum amount		$ 220,000,000.0
Borrowing availability		215,200,000
Outstanding letters of credit issued		81,100,000
Outstanding borrowings		63,600,000
Letter of credit sub-facility amount		70,500,000
U.S. revolving credit facility		63,600,000
Revolving Credit Facility \| Iceland revolving credit facility
Line of Credit Facility [Line Items]
Credit facility maximum amount		50,000,000.0
Outstanding letters of credit issued		0
Outstanding borrowings		50,000,000.0
Borrowing availability, net of outstanding letters of credit and borrowings		0
U.S. revolving credit facility		$ 50,000,000.0
Casthouse Facility
Line of Credit Facility [Line Items]
Credit facility face amount	$ 130,000,000
Outstanding borrowings				$ 0
Debt instrument, term	8 years
Debt instrument, quarterly installment fee	1.818%
Debt instrument, initial payment period after first drawdown of funds	30 months
Debt instrument, remaining payment after drawdown of funds	60.00%
U.S. revolving credit facility				$ 0
Debt instrument, arrangement fee, percentage of facility	0.78%
Debt instrument, arrangement fee, paid upfront	50.00%
Debt instrument, arrangement fee, paid at end of availability	50.00%
Line of credit facility, unused capacity, commitment fee percentage	0.38%
Secured Credit Facility \| Casthouse Facility
Line of Credit Facility [Line Items]
Long-term debt	$ 430,000,000