Liability Related to Sale of Future Royalties -Schedule of Activity Within Liability Related to Sale of Future Royalties (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Liability Related To Sale Of Future Royalties [Line Items]
Current portion of liability related to sale of future royalties	$ (42,560)	$ (34,309)
Liability related to sale of future royalties, non-current	11,118	$ 25,378
Royalty Agreements
Liability Related To Sale Of Future Royalties [Line Items]
Beginning balance	59,687
Zolgensma royalties paid to HCR	(14,441)
Interest expense recognized	8,432
Ending balance	53,678
Current portion of liability related to sale of future royalties	(42,560)
Liability related to sale of future royalties, non-current	$ 11,118