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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue from Contracts with Customers
Total revenue	$ 104,876	$ 95,571	$ 306,539	$ 318,302
Contra revenue charge			42,742	44,473
Not Designated as Hedging Instrument | Commodity Swaps
Revenue from Contracts with Customers
Net settlement of commodity swap derivative instruments	0	1,900	2,400	2,900
Fuel Sales
Revenue from Contracts with Customers
Total revenue	64,116	60,006	189,717	220,168
RIN Credits
Revenue from Contracts with Customers
Total revenue	11,066	6,784	29,401	16,664
LCFS Credits
Revenue from Contracts with Customers
Total revenue	1,924	2,846	6,079	7,618
AFTC
Revenue from Contracts with Customers
Total revenue	6,390	5,422	17,750	14,977
Total volume-related product revenue
Revenue from Contracts with Customers
Total revenue	82,080	73,686	243,214	259,123
Station construction sales
Revenue from Contracts with Customers
Total revenue	7,820	7,593	19,060	17,512
Product revenue
Revenue from Contracts with Customers
Total revenue	89,900	81,279	262,274	276,635
Volume-related, O&M services
Revenue from Contracts with Customers
Total revenue	14,406	13,646	42,563	39,603
Other services
Revenue from Contracts with Customers
Total revenue	570	646	1,702	2,064
Service revenue
Revenue from Contracts with Customers
Total revenue	14,976	14,292	44,265	41,667
Volume-Related
Revenue from Contracts with Customers
Gain (loss) due to changes in fair value	(1,416)	(1,372)	267	(304)
Contra revenue charge	$ 15,800	$ 16,800	$ 42,700	$ 44,500

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