Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Revenue (note 8)	$ 8,766	$ 4,358
Operating expenses:
Research and development	19,360	16,308
General and administrative	6,775	4,109
Total operating expenses	26,135	20,417
Loss from operations	(17,369)	(16,059)
Other income (expense):
Interest income	368	146
Unrealized fair value loss on marketable securities	(3,362)	(74)
Foreign exchange gain	299	155
Loss before income taxes	(20,064)	(15,832)
Income tax recovery	394	68
Net loss and comprehensive loss	(19,670)	(15,764)
Net loss attributable to preferred shareholders	(299)	(423)
Net loss attributable to common shareholders	$ (19,371)	$ (15,341)
Net loss per common share (note 3):
Basic and diluted	$ (0.35)	$ (0.42)
Weighted-average common shares outstanding (note 3):
Basic and diluted	54,852,792	36,824,619