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Related party transactions (Details) - Cespira - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Related Party Transaction [Line Items] |  |  |  |  |
Receivables | $ 241 |  | $ 241 |  | $ 4,973
Payables | 161 |  | 161 |  | $ 1,137
Sales of goods, services, and other income |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Transaction amount | 136 | $ 2,677 | 15,679 | $ 3,338 |
Inventory purchased, services and other expenses |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Transaction amount | $ 226 | $ 0 | $ 1,470 | $ 0 |

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