Income taxes - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income taxes
Income tax expense (benefit)	$ 27,574	$ (1,874)	$ 7,369	$ 2,522
Effective tax rate	16.70%	2.60%	70.00%	1.30%
Statutory federal income tax rate	21.00%	21.00%	21.00%	21.00%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details