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License Agreements - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2022
Sep. 30, 2023
Jun. 30, 2023
Apr. 30, 2020
Related Party Transaction [Line Items]        
Revenue recognized   $ (317,000) $ (5,411,000)  
Kyowa Kirin Co. Ltd        
Related Party Transaction [Line Items]        
Termination Agreement Jul. 14, 2023      
Total upfront payment receivable for grant of rights       $ 100,000,000
Kkc Agreements [Member] | Kyowa Kirin Co. Ltd        
Related Party Transaction [Line Items]        
Transaction price of deferred revenue remaining performance obligations   $ 317,000    
US License [Member] | Kyowa Kirin Co. Ltd        
Related Party Transaction [Line Items]        
Deferred revenue     $ 64,500,000