Nature of business and basis of presentation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Net loss	$ (56,163)	$ (47,258)
Accumulated deficit	$ (710,854)		$ (654,691)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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