Net loss per share - Schedule of Computation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (25,629)	$ (4,589)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	119,594,341	117,386,322
Weighted-average shares used to compute net loss per share, diluted (in shares)	119,594,341	117,386,322
Basic net loss per share (in dollars per share)	$ (0.21)	$ (0.04)
Diluted net loss per share (in dollars per share)	$ (0.21)	$ (0.04)