Net loss per share - Summary of Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net loss attributable to common stockholders	$ (107,294)	$ (153,875)	$ (80,026)
Net loss attributable to common stockholders	$ (107,294)	$ (153,875)	$ (80,026)
Weighted-average shares used in computing net loss per share attributable to common stockholders
Basic (in shares)	150,098,776	140,873,504	54,972,827
Diluted (in shares)	150,098,776	140,873,504	54,972,827
Net loss per share attributable to common stockholders
Basic (in dollars per share)	$ (0.71)	$ (1.09)	$ (1.46)
Diluted (in dollars per share)	$ (0.71)	$ (1.09)	$ (1.46)