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Related Party Transactions | 6 Months Ended
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Jun. 30, 2025
Related Party Transactions |
Related Party Transactions | 16. Related Party Transactions ​ ECOTEC ​ During the three and six months ended June 30, 2025, we made purchases of $0.2 million and $0.3 million, respectively, from our unconsolidated affiliate ECOTEC for use in our operations. FGC Holdco We are a distributer of MaCH4 NRS equipment in the U.S. market, and, subject to certain contractual provisions, have committed to purchase from FGC Holdco, at arm’s length, a minimum of $64.3 million of MaCH4 NRS equipment through March 31, 2026. During the three and six months ended June 30, 2025, we made purchases of $1.2 million and $3.1 million, respectively, from our unconsolidated affiliate to sell to third parties or for use in our operations. ​ The carrying value of assets and liabilities recognized in our condensed consolidated balance sheets related to our variable interests in FGC Holdco and our maximum exposure to loss related to our involvement with an unconsolidated VIE were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | June 30, 2025 | ​ | December 31, 2024 | ​
Inventory | ​ | $ | 7,234 | ​ | $ | 6,103 | ​
Investment in unconsolidated affiliate | ​ |  | 421 | ​ |  | 191 | ​
Total VIE assets | ​ | ​ | 7,655 | ​ | ​ | 6,294 | ​
Maximum exposure to loss | ​ | $ | 7,655 | ​ | $ | 6,294 | ​
​ Hilcorp From August 2019 to present, our Board of Directors has included a member affiliated with our customer Hilcorp or its subsidiaries or affiliates. Revenue from Hilcorp was $10.6 million and $9.9 million during the three months ended June 30, 2025 and 2024, respectively, and $21.7 million and $20.4 million during the six months ended June 30, 2025 and 2024, respectively. ​ Accounts receivable, net due from Hilcorp was $3.4 million and $3.6 million as of June 30, 2025 and December 31, 2024, respectively.

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- Definition The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-5 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480990/946-20-50-6 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477968/946-235-50-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 235 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477968/946-235-50-2 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(g)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(2)(e)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/850/tableOfContent Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-6 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-1 + Details
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