Basic and diluted net loss per common share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator
Net loss	$ (31,264)	$ (37,513)
Denominator
Weighted-average common shares for basic net loss per share	58,610,375	57,051,539
Weighted-average common shares for diluted net loss per share	58,610,375	57,051,539
Basic net loss per common share	$ (0.53)	$ (0.66)
Diluted net loss per common share	$ (0.53)	$ (0.66)