Loss per share - Schedule of basic and diluted loss per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net loss	$ (28,361)	$ (34,780)
Denominator:
Weighted-average number of shares used in computed net loss per share − basic	68,432,168	49,032,319
Weighted-average number of shares used in computed net loss per share − diluted	68,432,168	49,032,319
Net loss per share − basic (in dollars per share)	$ (0.41)	$ (0.71)
Net loss per share − diluted (in dollars per share)	$ (0.41)	$ (0.71)