XML 106 R96.htm IDEA: XBRL DOCUMENT v3.22.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Related Party Transaction [Line Items]      
Accounts receivable from related parties $ 10,930,000 $ 4,127,000  
Deferred revenue 58,909,000 2,147,000  
Accrued liabilities to related party 4,000 24,000  
Investment income (loss) 1,007,000 (202,000) $ 0
Equity method investment in unconsolidated variable interest entity 3,825,000 2,728,000  
Astellas [Member]      
Related Party Transaction [Line Items]      
Drug product revenue from a related party 3,200,000 4,300,000 (36,300,000)
Astellas [Member] | Collaborative Arrangement [Member]      
Related Party Transaction [Line Items]      
Expense related to collaboration agreements 200,000 500,000 2,800,000
Accounts receivable from related parties 10,900,000 4,100,000  
Deferred revenue 27,900,000 7,500,000  
Accrued liabilities to related party   1,100,000  
Falikang      
Related Party Transaction [Line Items]      
Accounts receivable from related parties 0    
Deferred revenue $ 1,200,000    
Percentage of outstanding shares owned 51.10%    
Investment income (loss) $ 1,000,000.0 (200,000)  
Equity method investment in unconsolidated variable interest entity 3,800,000 2,700,000  
Miscellaneous receivables 0 900,000  
Falikang | Collaborative Arrangement [Member]      
Related Party Transaction [Line Items]      
Revenue related to collaboration agreements 35,600,000    
License and Development [Member] | Astellas [Member] | Collaborative Arrangement [Member]      
Related Party Transaction [Line Items]      
Revenue related to collaboration agreements $ 130,400,000 $ 33,500,000 $ 158,800,000