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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2025
Segment Reporting [Abstract] |
Summary of Reconciliation of the Company's Reportable Segments' Net Income (Loss) from Continuing Operations |
|  | Three Months Ended March 31, 2025 |
|  | RNG |  |  | REG |  |  | Corporate |  |  | Total |
Total operating revenue |  | $ | 38,451 |  |  | $ | 4,152 |  |  | $ | — |  |  | $ | 42,603 |
Less (1) |  |  |  |  |  |  |  |  |  |  |  |
Payroll and related expenses |  |  | 2,410 |  |  |  | 683 |  |  |  | 5,158 |  |  |  | 8,251 |
Wellfield operating and maintenance |  |  | 1,655 |  |  |  | 717 |  |  | — |  |  |  | 2,372 |
Plant expense |  |  | 619 |  |  |  | 326 |  |  | — |  |  |  | 945 |
Waste disposal |  |  | 570 |  |  |  | 14 |  |  | — |  |  |  | 584 |
Preventative maintenance |  |  | 3,550 |  |  |  | 609 |  |  | — |  |  |  | 4,159 |
Breakdown expenses |  |  | 445 |  |  |  | 448 |  |  | — |  |  |  | 893 |
Utility expense |  |  | 3,926 |  |  |  | 113 |  |  | — |  |  |  | 4,039 |
Insurance |  | — |  |  | — |  |  |  | 1,330 |  |  |  | 1,330 |
Professional and IT fees |  | — |  |  | — |  |  |  | 1,360 |  |  |  | 1,360 |
Royalties, transportation, gathering and production fuel |  |  | 7,114 |  |  |  | 457 |  |  | — |  |  |  | 7,571 |
Depreciation, depletion and amortization |  |  | 4,900 |  |  |  | 1,310 |  |  |  | 54 |  |  |  | 6,264 |
Impairment |  |  | 1,993 |  |  |  | 54 |  |  | — |  |  |  | 2,047 |
Other operating expenses (2), (3) |  |  | 900 |  |  |  | 442 |  |  |  | 1,036 |  |  |  | 2,378 |
Total operating expenses |  | $ | 28,082 |  |  | $ | 5,173 |  |  | $ | 8,938 |  |  | $ | 42,193 |
Operating income (loss) |  | $ | 10,369 |  |  | $ | (1,021 | ) |  | $ | (8,938 | ) |  | $ | 410 |
Interest expense |  | — |  |  | — |  |  |  | 1,243 |  |  |  | 1,243 |
Other expense (income) |  |  | 8 |  |  |  | 9 |  |  |  | (69 | ) |  |  | (52 | )
Income (loss) before income taxes |  | $ | 10,361 |  |  | $ | (1,030 | ) |  | $ | (10,112 | ) |  | $ | (781 | )
Total assets |  | $ | 188,732 |  |  | $ | 115,729 |  |  | $ | 49,765 |  |  | $ | 354,226 |
Capital expenditures |  |  | 7,568 |  |  |  | 3,983 |  |  |  | 81 |  |  |  | 11,632 |
(1) Significant expenses regularly provided to the CODM. (2) The majority of other operating expenses for RNG and REG are consumables, rent, environmental compliance and general and administrative expenses. (3) The majority of other operating expenses for Corporate are office expenses, board of director and corporate filing fees.
|  | Three Months Ended March 31, 2024 |
|  | RNG |  |  | REG |  |  | Corporate |  |  | Total |
Total operating revenue |  | $ | 33,988 |  |  | $ | 4,799 |  |  | $ | — |  |  | $ | 38,787 |
Less (1) |  |  |  |  |  |  |  |  |  |  |  |
Payroll and related expenses |  |  | 2,168 |  |  |  | 602 |  |  |  | 5,873 |  |  |  | 8,643 |
Wellfield operating and maintenance |  |  | 1,048 |  |  |  | 571 |  |  | — |  |  |  | 1,619 |
Plant expense |  |  | 494 |  |  |  | 307 |  |  | — |  |  |  | 801 |
Waste disposal |  |  | 428 |  |  |  | 13 |  |  | — |  |  |  | 441 |
Preventative maintenance |  |  | 2,728 |  |  |  | 456 |  |  | — |  |  |  | 3,184 |
Breakdown expenses |  |  | 295 |  |  |  | 81 |  |  | — |  |  |  | 376 |
Utility expense |  |  | 3,942 |  |  |  | 61 |  |  | — |  |  |  | 4,003 |
Insurance |  | — |  |  | — |  |  |  | 1,532 |  |  |  | 1,532 |
Professional and IT fees |  | — |  |  | — |  |  |  | 1,282 |  |  |  | 1,282 |
Royalties, transportation, gathering and production fuel |  |  | 5,997 |  |  |  | 521 |  |  | — |  |  |  | 6,518 |
Depreciation, depletion and amortization |  |  | 4,076 |  |  |  | 1,297 |  |  |  | 61 |  |  |  | 5,434 |
Impairment |  |  | 216 |  |  |  | 312 |  |  | — |  |  |  | 528 |
Other operating expenses (2), (3) |  |  | 1,016 |  |  |  | 200 |  |  |  | 842 |  |  |  | 2,058 |
Total operating expenses |  | $ | 22,408 |  |  | $ | 4,421 |  |  | $ | 9,590 |  |  | $ | 36,419 |
Operating income (loss) |  | $ | 11,580 |  |  | $ | 378 |  |  | $ | (9,590 | ) |  | $ | 2,368 |
Interest expense |  | — |  |  |  | 1 |  |  |  | 1,164 |  |  |  | 1,165 |
Other expense (income) |  |  | 22 |  |  |  | (1,011 | ) |  |  | (71 | ) |  |  | (1,060 | )
Income (loss) before income taxes |  | $ | 11,558 |  |  | $ | 1,388 |  |  | $ | (10,683 | ) |  | $ | 2,263 |
Total assets |  | $ | 181,150 |  |  | $ | 87,071 |  |  | $ | 86,468 |  |  | $ | 354,689 |
Capital expenditures |  |  | 9,041 |  |  |  | 12,826 |  |  |  | 119 |  |  |  | 21,986 |
(1) Significant expenses regularly provided to the CODM. (2) The majority of other operating expenses for RNG and REG are consumables, rent, environmental compliance and general and administrative expenses. (3) The majority of other operating expenses for Corporate are office expenses, board of director and corporate filing fees.
Summary of Revenue by Major Customers | For the three months ended March 31, 2025 and 2024, three and four customers, respectively, made up greater than 10% of total revenues.
|  | Three Months Ended March 31, 2025 |
|  | RNG |  |  | REG |  |  | Corporate |  |  | Total |
Customer A |  |  | 19.1 | % |  |  | — |  |  |  | — |  |  |  | 19.1 | %
Customer B |  |  | 13.4 | % |  |  | — |  |  |  | — |  |  |  | 13.4 | %
Customer C |  |  | 10.9 | % |  |  | — |  |  |  | — |  |  |  | 10.9 | %
|  | Three Months Ended March 31, 2024 |
|  | RNG |  |  | REG |  |  | Corporate |  |  | Total |
Customer A |  |  | 40.6 | % |  |  | — |  |  |  | — |  |  |  | 40.6 | %
Customer B |  |  | 12.8 | % |  |  | — |  |  |  | — |  |  |  | 12.8 | %
Customer C |  |  | 12.8 | % |  |  | — |  |  |  | — |  |  |  | 12.8 | %
Customer D |  |  | — |  |  |  | 10.9 | % |  |  | — |  |  |  | 10.9 | %

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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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