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Segment information - Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) segment | Sep. 30, 2024 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | segment |  |  | 3 |
Total consolidated | $ 514 | $ 183 | $ 1,909 | $ 2,189
Cespira | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total consolidated | $ 1,325 | $ 154 | $ 2,896 | $ 164

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