Net loss per share - Summary of Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net loss	$ (25,735)	$ (29,380)	$ (70,279)	$ (55,029)
Net loss	$ (25,735)	$ (29,380)	$ (70,279)	$ (55,029)
Weighted-average shares used in computing net loss per share
Basic (in shares)	148,071,315	140,035,203	146,910,959	139,691,508
Diluted (in shares)	148,071,315	140,035,203	146,910,959	139,691,508
Net loss per share
Basic (in dollars per share)	$ (0.17)	$ (0.21)	$ (0.48)	$ (0.39)
Diluted (in dollars per share)	$ (0.17)	$ (0.21)	$ (0.48)	$ (0.39)