Income taxes (Details) - USD ($)	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 0	$ 0
Effective income tax rate (in percent)	0.00%	0.00%

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

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+ Details