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Segment financial information - Summary of Revenues and Expenses Classified As Held For Sale (Details) - Disposal Group, Held-for-Sale, Not Discontinued Operations - Pacific Current - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment financial information |  |  |  |
Revenues | $ 3,910 | $ 2,753 | $ 9,459 | $ 6,129
Expenses | 5,018 | 3,654 | 9,365 | 11,918
Operating income (loss) attributed to Pacific Current’s solar/BESS and biomass facilities classified as held for sale | $ (1,108) | $ (901) | $ 94 | $ (5,789)

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- Definition Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-5B + Details
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- Definition Amount of other expense attributable to disposal group, including, but not limited to, discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-5B + Details
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