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Property, plant and equipment - Schedule of Interest and AFUDC Capitalized (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Schedule of Capitalization [Line Items] |  |
Total | $ 6,352 | $ 12,812
Allowance for borrowed funds |  |
Schedule of Capitalization [Line Items] |  |
AFUDC capitalized on regulated property: | 4,604 | 9,440
Allowance for equity funds |  |
Schedule of Capitalization [Line Items] |  |
AFUDC capitalized on regulated property: | $ 1,748 | $ 3,372

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- Definition Amount capitalized of allowance for funds used during construction. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478698/980-835-25-1 + Details
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