Segment Information - Schedule of Adjusted Earnings/(Loss) Before Taxes for the Company's Single Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information, Profit (Loss) [Abstract]
Revenue	$ 2,978	$ 1,401
Interest income	7,351	3,083
Personnel expense	10,163	5,269
External R&D expense	29,327	32,604
Manufacturing expense	5,841	3,661
Regulatory expense	1,017	492
Commercial programs	5,907	3,489
General and administrative expense	4,322	3,419
Depreciation and amortization	113	31
Segment adjusted loss before tax	(46,361)	(44,481)
Reconciliation to consolidated net loss
Share-based compensation expense	(15,213)	(7,918)
Change in fair value - derivatives	17,754	(38,950)
Foreign exchange gains/(losses)	4,293	(2,418)
Loss for the year	$ (39,527)	$ (93,767)