Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating expenses:
Research and development	$ 56,970	$ 42,880	$ 150,922	$ 126,436
General and administrative	16,706	12,804	50,899	33,923
Total operating expenses	73,676	55,684	201,821	160,359
Loss from operations	(73,676)	(55,684)	(201,821)	(160,359)
Other income:
Interest income	10,329	6,982	32,521	18,929
Unrealized fair value gain on trading securities		490		3,404
Foreign exchange gain (loss)	237	(407)	414	289
Other income	10,566	7,065	32,935	22,622
Loss before income taxes	(63,110)	(48,619)	(168,886)	(137,737)
Income tax recovery	320	157	241	87
Net loss	(62,790)	(48,462)	(168,645)	(137,650)
Other comprehensive income (loss):
Unrealized gain on available-for-sale securities (note 6)	3,548	346	1,413	47
Comprehensive loss	$ (59,242)	$ (48,116)	$ (167,232)	$ (137,603)
Net loss per common share (note 4):
Basic	$ (0.81)	$ (0.73)	$ (2.17)	$ (2.09)
Diluted	$ (0.81)	$ (0.73)	$ (2.17)	$ (2.09)
Weighted-average common shares outstanding (note 4):
Basic	77,926,205	66,002,163	77,730,644	65,862,661
Diluted	77,926,205	66,002,163	77,730,644	65,862,661