License Agreements - Hangzhou Highlightll Pharmaceutical Agreement (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2023
License and other agreements
Development milestone payment to be paid	$ 140,650,000			$ 140,650,000
Milestone payment to be paid upon regulatory achievement	641,975,000			641,975,000
Commercial milestone payment to be paid	2,150,450,000			2,150,450,000
Research and development	314,819,000		$ 79,490,000	470,791,000	$ 142,951,000
Highlightll Pharmaceutical Co, Ltd.
License and other agreements
Research and development	0		$ 0	0	$ 0
Highlightll Pharmaceutical Co, Ltd. | Collaborative arrangement
License and other agreements
Issuance of common shares, net of offering costs		$ 21,814,000
Development milestone payment to be paid	75,000,000			75,000,000
Milestone payment to be paid upon regulatory achievement	37,500,000			37,500,000
Commercial milestone payment to be paid	$ 837,500,000			$ 837,500,000
Highlightll Pharmaceutical Co, Ltd. | License agreement | Collaborative arrangement
License and other agreements
Payment obligation for license agreement						$ 10,000,000
Obligation for issuance of common shares as payment for assets (in shares)						721,136