Net loss per share - Summary of Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net loss attributable to common stockholders	$ (153,875)	$ (80,026)	$ (77,620)
Net loss attributable to common stockholders	$ (153,875)	$ (80,026)	$ (77,620)
Weighted-average shares used in computing net loss per share attributable to common stockholders
Basic (in shares)	140,873,504	54,972,827	33,384,438
Diluted (in shares)	140,873,504	54,972,827	33,384,438
Net loss per share attributable to common stockholders
Basic (in dollars per share)	$ (1.09)	$ (1.46)	$ (2.33)
Diluted (in dollars per share)	$ (1.09)	$ (1.46)	$ (2.33)