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Stock-Based Compensation - Amazon Warrant (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 14, 2021 | Apr. 16, 2021
Stock-Based Compensation |  |  |  |  |  |
Contra revenue charge |  |  | $ 51,510,000 | $ 42,742,000 |  |
Amazon Warrant |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |
Aggregate number of warrant shares (in shares) |  |  |  |  | 5,625,959 | 53,141,755
Exercise price of the warrant (in dollars per share) |  |  |  |  | $ 13.49 | $ 13.49
Total discretionary fuel purchases |  |  |  |  |  | $ 500,000,000
Outstanding and unvested Beginning Balance |  |  | $ 29,972,883 |  |  |
Granted |  |  | 0 |  |  |
Vested |  |  | (7,052,448) |  |  |
Outstanding and unvested as of Ending Balance | $ 22,920,435 |  | $ 22,920,435 |  |  |
Number of warrants vested |  |  | 7,052,448 |  |  |
Contra revenue charge | $ 16,800,000 | $ 15,800,000 | $ 51,500,000 | $ 42,700,000 |  |

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