Basic and diluted net loss per common share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator
Net loss	$ (30,988)	$ (37,512)	$ (23,273)	$ (18,348)	$ (68,501)	$ (41,621)
Denominator
Weighted-average common shares for basic net loss per share	57,685,006		12,044,610		57,370,022	9,775,840
Weighted-average common shares for diluted net loss per share	57,685,006		12,044,610		57,370,022	9,775,840
Basic net loss per common share	$ (0.54)		$ (1.93)		$ (1.19)	$ (4.26)
Diluted net loss per common share	$ (0.54)		$ (1.93)		$ (1.19)	$ (4.26)