Reportable Segments and Geographic Information - Capital Expenditures (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	$ 60,890	$ 72,805
Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	60,890	72,805
Operating Segments | RNG fuel
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	44,259	56,195
Operating Segments | Fuel Station Services
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	16,140	16,610
Operating Segments | Renewable Power
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	491	0
Corporate
Segment Reporting, Revenue Reconciling Item [Line Items]
Cash paid for purchases of property, plant and equipment	$ 0	$ 0