License Agreements - Additional Information (Detail) - Kyowa Kirin Co. Ltd - USD ($)	1 Months Ended	3 Months Ended
	Nov. 30, 2022	Sep. 30, 2023	Jun. 30, 2023	Apr. 30, 2020
Related Party Transaction [Line Items]
Termination Agreement	Jul. 14, 2023
Total upfront payment receivable for grant of rights				$ 100,000,000
Kkc Agreements [Member]
Related Party Transaction [Line Items]
Transaction price of deferred revenue remaining performance obligations		$ 0.3
US License [Member]
Related Party Transaction [Line Items]
Deferred revenue			$ 64,500,000