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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Revenue from Contracts with Customers |  |  |  |
Total revenue | $ 106,137 | $ 104,876 | $ 312,514 | $ 306,539
Contra revenue charge |  |  | 51,510 | 42,742
Fuel Sales |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 69,860 | 64,116 | 214,035 | 189,717
RIN Credits |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 8,329 | 11,066 | 22,729 | 29,401
LCFS Credits |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 3,148 | 1,924 | 9,650 | 6,079
AFTC |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 0 | 6,390 | (28) | 17,750
Total volume-related product revenue |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 81,018 | 82,080 | 244,966 | 243,214
Station construction sales |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 9,877 | 7,820 | 23,331 | 19,060
Total product revenue |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 90,895 | 89,900 | 268,297 | 262,274
Volume-related, O&M services |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 14,601 | 14,406 | 42,243 | 42,563
Other services |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 641 | 570 | 1,974 | 1,702
Total service revenue |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Total revenue | 15,242 | 14,976 | 44,217 | 44,265
Volume -Related |  |  |  |
Revenue from Contracts with Customers |  |  |  |
Gain (loss) due to changes in fair value | (319) | (1,416) | (1,420) | 267
Contra revenue charge | $ 16,800 | $ 15,800 | $ 51,500 | $ 42,700

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