Basic and diluted net loss per common share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator
Net loss	$ (30,749)	$ (30,988)	$ (37,512)	$ (26,009)	$ (23,273)	$ (18,348)	$ (99,250)	$ (67,630)
Denominator
Weighted-average common shares for basic net loss per share	57,973,541			54,472,650			57,573,406	24,838,250
Weighted-average common shares for diluted net loss per share	57,973,541			54,472,650			57,573,406	24,838,250
Basic net loss per common share	$ (0.53)			$ (0.48)			$ (1.72)	$ (2.72)
Diluted net loss per common share	$ (0.53)			$ (0.48)			$ (1.72)	$ (2.72)