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v3.21.2

Subsequent Events (Details) - Subsequent Event [Member] | Nov. 02, 2021 USD ($) | Oct. 01, 2021 USD ($) | Mar. 31, 2024 t | Nov. 05, 2021 USD ($) | Nov. 03, 2021 t
--- | --- | --- | --- | --- | ---
Casthouse Facility [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Property, plant and equipment, percentage of project funding source |  |  |  |  | 100.00%
Debt instrument, term | 8 years |  |  |  |
Credit facility face amount | $ 130,000,000 |  |  |  |
Debt instrument, initial payment period after first drawdown of funds | 30 months |  |  |  |
Debt instrument, arrangement fee | 0.78% |  |  |  |
Line of credit facility, unused capacity, commitment fee percentage | 0.38% |  |  |  |
Outstanding borrowings |  |  |  | $ 0 |
Casthouse Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Debt instrument, floor rate | 0.00% |  |  |  |
Casthouse [Member] | Billet [Member] | Grundartangi, Iceland [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Property, plant and equipment, maximum production capacity, mass | t |  |  |  |  | 150,000
Casthouse [Member] | Primary Foundry Alloys [Member] | Grundartangi, Iceland [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Property, plant and equipment, current production capacity, mass | t |  |  |  |  | 60,000
PBGC [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Pension contributions, amended term, annual contribution |  | $ 2,400,000 |  |  |
Pension contributions, amended term, total contribution |  | $ 9,600,000 |  |  |
Pension contributions, term |  | 4 years |  |  |
Forecast [Member] | Casthouse [Member] | Primary Foundry Alloys [Member] | Grundartangi, Iceland [Member] |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |
Property, plant and equipment, current production capacity, mass | t |  |  | 120,000 |  |

X
- Definition Debt Instrument, Arrangement Fee, Percentage of Facility + References No definition available. + Details
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- Definition Debt Instrument, Floor Rate + 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 Pension Contributions, Amended Term, Annual Contribution + References No definition available. + Details
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- Definition Pension Contributions, Amended Term, Total Contribution + References No definition available. + Details
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- Definition Pension Contributions, Term + References No definition available. + Details
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- Definition Property, Plant and Equipment, Current Production Capacity, Mass + References No definition available. + Details
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- Definition Property, Plant and Equipment, Maximum Production Capacity + References No definition available. + Details
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- Definition Property, Plant and Equipment, Percentage of Project Funding Source + References No definition available. + Details
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X
- 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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X
- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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X
- 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 Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Period Type: |

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- Details
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- Details
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