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Basis of Presentation and Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 18, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Related Party Transaction [Line Items] |  |  |  |  |  |
Allowance for doubtful accounts specific reserves, additions |  |  |  | $ 100 | $ 171,000 |
Impairment of long-lived assets |  | $ 0 | $ 0 | 31,669 | $ 0 |
Fair Value, Inputs, Level 1 |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Cash equivalents and marketable securities at fair value |  | 103,200 |  | 103,200 |  | $ 56,500
Puerto Rico Electric Power Authority (PREPA) | Cobra Acquisitions |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Proceeds from PREPA under settlement agreement | $ 18,400 |  |  |  |  | 168,400
Second installment of administrative expense claim pending |  | $ 20,000 |  | $ 20,000 |  |
Allowance for doubtful accounts specific reserves |  |  |  |  |  | $ 170,700
Minimum |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Accounts receivable, threshold period delinquent |  |  |  | 30 days |  |
Maximum |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Accounts receivable, threshold period delinquent |  |  |  | 60 days |  |

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