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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Revenue from Contracts with Customers
Total revenue	$ 103,764	$ 103,709	$ 103,709
Contra revenue charge	17,338	12,897
Fuel Sales
Revenue from Contracts with Customers
Total revenue	76,292	68,203
RIN Credits
Revenue from Contracts with Customers
Total revenue	5,202	8,812
LCFS Credits
Revenue from Contracts with Customers
Total revenue	3,799	(164)
AFTC
Revenue from Contracts with Customers
Total revenue	(17)	5,357
Total volume-related product revenue
Revenue from Contracts with Customers
Total revenue	84,719	83,830
Station construction sales
Revenue from Contracts with Customers
Total revenue	5,571	5,584
Total product revenue
Revenue from Contracts with Customers
Total revenue	90,290	89,414
Volume-related, O&M services
Revenue from Contracts with Customers
Total revenue	12,790	13,735
Other services
Revenue from Contracts with Customers
Total revenue	684	560
Total service revenue
Revenue from Contracts with Customers
Total revenue	13,474	14,295
Volume -Related
Revenue from Contracts with Customers
Gain (loss) due to changes in fair value	(557)	1,622
Contra revenue charge	$ 17,300	$ 12,900

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