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Long-Lead Material Work In Process and Liability (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023 | Nov. 07, 2023 | Mar. 31, 2023
--- | --- | --- | --- | ---
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Purchase of certain long-lead materials | $ 33,064 | $ 32,323 |  |
Restricted cash | 5,100 | 5,100 |  |
Long-lead material work in process | 41,609 | 36,361 |  |
CFPP LLC | Long Lead Material Contract |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Purchase of certain long-lead materials | $ 33,064 | $ 33,064 |  | $ 55,700
Settlement and release agreement, initial payment, agreed amount |  |  | $ 49,769 |
Letters of credit |  |  | $ 5 |
Estimated cost percentage | 100.00% | 100.00% |  |
Long-lead material work in process | $ 41,609 | $ 36,361 |  |

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