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Income taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2025
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Income tax expense (benefit) | $ 126 | $ 1 | $ 140 | $ 18 |
Effective income tax rate reconciliation, percent |  |  | (0.90%) |  |
Tax expense (benefit), share-based payment arrangement, amount |  |  | $ (600) |  |
Income tax rate, percent |  |  | 21.00% |  |
Operating loss carryforward | $ 57,900 |  | $ 57,900 |  |
CANADA |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Effective income tax rate reconciliation, percent |  |  | 0.00% |  |
Forecast |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Income tax rate, without discrete items, percent |  |  |  |  | (0.90%)

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