Net loss per share - Calculation of Basic and Diluted Net Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss attributable to common stockholders	$ (46,693)	$ (9,262)	$ (101,722)	$ (38,642)
Net loss attributable to common stockholders	$ (46,693)	$ (9,262)	$ (101,722)	$ (38,642)
Weighted-average shares used in computing net loss per share attributable to common stockholders
Basic (in shares)	140,951,605	37,740,586	140,116,156	37,068,570
Diluted (in shares)	140,951,605	37,740,586	140,116,156	37,068,570
Net loss per share attributable to common stockholders
Basic (in dollars per share)	$ (0.33)	$ (0.25)	$ (0.73)	$ (1.04)
Diluted (in dollars per share)	$ (0.33)	$ (0.25)	$ (0.73)	$ (1.04)