Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating expenses:
Research and development	$ 49,702	$ 44,040	$ 93,952	$ 83,556
General and administrative	19,402	11,584	34,193	21,119
Total operating expenses	69,104	55,624	128,145	104,675
Loss from operations	(69,104)	(55,624)	(128,145)	(104,675)
Other income:
Interest income	10,837	6,524	22,192	11,947
Unrealized fair value gain on trading securities		1,036		2,914
Foreign exchange gain	10	383	177	696
Other income	10,847	7,943	22,369	15,557
Loss before income taxes	(58,257)	(47,681)	(105,776)	(89,118)
Income tax recovery (expense)	333	220	(79)	(70)
Net loss	(57,924)	(47,461)	(105,855)	(89,188)
Other comprehensive loss:
Unrealized loss on available-for-sale securities (note 6)	(443)	(1,479)	(2,135)	(299)
Comprehensive loss	$ (58,367)	$ (48,940)	$ (107,990)	$ (89,487)
Net loss per common share (note 4):
Basic	$ (0.75)	$ (0.72)	$ (1.36)	$ (1.36)
Diluted	$ (0.75)	$ (0.72)	$ (1.36)	$ (1.36)
Weighted-average common shares outstanding (note 4):
Basic	77,671,128	65,861,138	77,632,864	65,792,910
Diluted	77,671,128	65,861,138	77,632,864	65,792,910