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Income taxes (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Income Tax Disclosure [Abstract] |  |  |  |
Income tax expense (benefit) | $ 0 | $ 2 | $ 121 | $ 94
Effective income tax rate reconciliation, percent |  |  | (1.10%) |
Effective income tax rate reconciliation, tax expense (benefit), share-based payment arrangement, amount |  |  | $ 1,200 |
Effective income tax rate reconciliation, at federal statutory income tax rate, without discrete items percent |  |  | (1.60%) |
Effective income tax rate reconciliation, at federal statutory income tax rate, percent |  |  | 21.00% |

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