Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
Collaboration agreements	$ 679	$ 279	$ 1,087	$ 445
Operating expenses:
Research and development, net of tax credits	31,475	20,205	57,933	36,714
General and administrative	7,938	6,741	16,717	11,978
Total operating expenses	39,413	26,946	74,650	48,692
Loss from operations	(38,734)	(26,667)	(73,563)	(48,247)
Other income, net
Realized and unrealized gain (loss) on foreign exchange	141	(94)	124	(125)
Interest income	544	38	673	102
Other expense	(11)	(7)	(19)	(14)
Total other income (expense), net	674	(63)	778	(37)
Loss before income taxes	(38,060)	(26,730)	(72,785)	(48,284)
Income tax recovery (expense)	(33)	421	(65)	558
Net loss and comprehensive loss	(38,093)	(26,309)	(72,850)	(47,726)
Net loss attributable to common shareholders-basic	(38,093)	(26,309)	(72,850)	(47,726)
Net loss attributable to common shareholders-diluted	$ (38,093)	$ (26,309)	$ (72,850)	$ (47,726)
Net loss per share attributable to common shareholders--basic	$ (0.91)	$ (0.71)	$ (1.74)	$ (1.29)
Net loss per share attributable to common shareholders-diluted	$ (0.91)	$ (0.71)	$ (1.74)	$ (1.29)
Weighted-average common shares outstanding-basic	41,899,509	37,036,683	41,880,666	36,977,040
Weighted-average common shares outstanding-diluted	41,899,509	37,036,683	41,880,666	36,977,040