Related Parties - Narrative (Details)			3 Months Ended		9 Months Ended
	Aug. 23, 2025 vote_per_share vote shares	Apr. 23, 2025 vote shares	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Mar. 17, 2025
Related Party Transaction [Line Items]
Total revenues			$ 83,357,000	$ 84,047,000	$ 249,220,000	$ 219,949,000
Termination written notice, term							90 days
Business acquisition, hourly rate fee, maximum					50
Class D Common Stock
Related Party Transaction [Line Items]
Conversion of stock, shares converted (in shares) | shares	50,000,000	50,000,000
Common stock, number of votes per share	5	5
Class B Common Stock
Related Party Transaction [Line Items]
Common stock, number of votes per share | vote	1	1
Exercise Year 1
Related Party Transaction [Line Items]
Business acquisition, internal rate of return							10.00%
Exercise Year 2
Related Party Transaction [Line Items]
Business acquisition, internal rate of return							15.00%
Exercise Year 3
Related Party Transaction [Line Items]
Business acquisition, internal rate of return							20.00%
Wasatch Interest
Related Party Transaction [Line Items]
Ownership percentage							50.00%
Project Interest
Related Party Transaction [Line Items]
Ownership percentage							50.00%
RNG fuel
Related Party Transaction [Line Items]
Total revenues			22,921,000	25,864,000	75,650,000	63,036,000
Related Party | RNG fuel
Related Party Transaction [Line Items]
Total revenues			17,950,000	$ 22,798,000	55,929,000	$ 54,174,000
Commodity Contract | Related Party | RNG fuel
Related Party Transaction [Line Items]
Total revenues			$ 4,982,000		$ 15,585,000