v3.26.1
Reportable Segments and Geographic Information - Segment Reporting Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues $ (348,975) $ (299,972)
Cost of sales 242,794 199,851
Income from equity method investments (2,627) (13,235)
Interest and financing expense, net 26,274 19,610
Project development and start up costs 14,942 19,109
Depreciation, amortization, and accretion 22,470 17,885
Other corporate expenses 38,226 28,137
Stock-based compensation 6,499 6,452
Other segment items 16,732 16,744
Net (loss) income before income tax benefit (16,335) 5,419
Income tax benefit (52,746) (8,906)
Net income 36,411 14,325
Investments in other entities [1] 231,223 223,594
Segment assets [1] 959,469 881,077
Cash paid for purchases of property, plant and equipment 70,739 127,239
Intersegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (20,773) (19,466)
Operating Segments    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (348,975) (299,972)
Cost of sales 242,794 199,851
Income from equity method investments (2,627) (13,235)
Interest and financing expense, net 26,274 19,610
Project development and start up costs 14,942 19,109
Depreciation, amortization, and accretion 22,470 17,885
Other corporate expenses 0 0
Stock-based compensation 0 0
Other segment items 16,732 16,744
Net (loss) income before income tax benefit 28,390 40,008
Investments in other entities 231,223 223,594
Segment assets 901,581 845,748
Cash paid for purchases of property, plant and equipment 70,739 127,239
Operating Segments | Intersubsegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (369,748) (319,438)
Corporate    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues 0 0
Cost of sales 0 0
Income from equity method investments 0 0
Interest and financing expense, net 0 0
Project development and start up costs 0 0
Depreciation, amortization, and accretion 0 0
Other corporate expenses 38,226 28,137
Stock-based compensation 6,499 6,452
Other segment items 0 0
Investments in other entities 0 0
Segment assets 57,888 35,329
Cash paid for purchases of property, plant and equipment 0 0
Corporate And Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues 0 0
Net (loss) income before income tax benefit (44,725) (34,589)
RNG Fuel    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues [2] (101,656) (88,420)
RNG Fuel | Intersegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (553) (518)
RNG Fuel | Operating Segments    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (101,656) (88,420)
Cost of sales 49,282 38,552
Income from equity method investments (2,627) (13,235)
Interest and financing expense, net 26,316 19,574
Project development and start up costs 14,942 19,109
Depreciation, amortization, and accretion 12,062 8,252
Other corporate expenses 0 0
Stock-based compensation 0 0
Other segment items 10,233 10,737
Net (loss) income before income tax benefit (8,552) 5,431
Investments in other entities 231,223 223,594
Segment assets 675,988 635,927
Cash paid for purchases of property, plant and equipment 42,991 108,825
RNG Fuel | Operating Segments | Intersubsegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (102,209) (88,938)
Fuel Station Services    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues [3] (214,551) (166,875)
Fuel Station Services | Intersegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (20,220) (18,948)
Fuel Station Services | Operating Segments    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (214,551) (166,875)
Cost of sales 166,778 128,804
Income from equity method investments 0 0
Interest and financing expense, net 36 168
Project development and start up costs 0 0
Depreciation, amortization, and accretion 6,407 5,612
Other corporate expenses 0 0
Stock-based compensation 0 0
Other segment items 3,033 614
Net (loss) income before income tax benefit 38,297 31,677
Investments in other entities 0 0
Segment assets 196,853 179,304
Cash paid for purchases of property, plant and equipment 26,656 18,414
Fuel Station Services | Operating Segments | Intersubsegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (234,771) (185,823)
Renewable Power    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues [4] (32,768) (44,677)
Renewable Power | Intersegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues 0 0
Renewable Power | Operating Segments    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues (32,768) (44,677)
Cost of sales 26,734 32,495
Income from equity method investments 0 0
Interest and financing expense, net (78) (132)
Project development and start up costs 0 0
Depreciation, amortization, and accretion 4,001 4,021
Other corporate expenses 0 0
Stock-based compensation 0 0
Other segment items 3,466 5,393
Net (loss) income before income tax benefit (1,355) 2,900
Investments in other entities 0 0
Segment assets 28,740 30,517
Cash paid for purchases of property, plant and equipment 1,092 0
Renewable Power | Operating Segments | Intersubsegment Eliminations    
Segment Reporting, Revenue Reconciling Item [Line Items]    
Total revenues $ (32,768) $ (44,677)
[1] Includes amounts related to consolidated VIEs, which are presented separately in the table below.
[2] Includes revenues from related parties of $68,039 and $68,416 for the years ended December 31, 2025 and 2024, respectively
[3] Includes revenues from related parties of $51,679 and $45,808 for the years ended December 31, 2025 and 2024, respectively
[4] Includes revenues from related parties of $6,822 and $6,912 for the years ended December 31, 2025 and 2024, respectively