v3.25.2
License and Collaboration Agreements - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Nov. 25, 2024
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Common stock, shares authorized   198,000,000 198,000,000   198,000,000   198,000,000
Gain (loss) on strategic investments     $ 36,721 $ 148 $ (54,007) $ 1,079  
Total Roche supply agreement revenue     97,968 2,383 231,301 56,363  
Development Milestone and Upfront Fee Recognized as Research and Development Expense     $ 0 0 $ 583,800 0  
Arrowhead Pharmaceuticals Inc [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 0.001 $ 0.001   $ 0.001    
Research and development expense     $ 6,500   $ 8,800    
Roche Holding A.G. [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Total Roche supply agreement revenue         112,000 48,000  
Intangible assets net excluding goodwill   $ 5,000 5,000   5,000    
Licensing and Collaboration Agreement [Member] | Arrowhead Pharmaceuticals Inc [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Up Front Payment for License and Collaboration Agreement $ 500,000            
Equity Method Investments $ 325,000 241,400 241,400   241,400    
Common stock, shares authorized 11,900,000            
Gain (loss) on strategic investments     36,500   (53,000)    
License Agreement Fee         250,000    
Annual Installment Fee         $ 50,000    
Term of installment fee         five years    
Research and development expense         $ 583,600    
Development Milestone and Upfront Fee Recognized as Research and Development Expense         10,300    
Upfront Fee To Be Paid On Certain Enrollment Achievement         300,000    
Collaborative Arrangement              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Payment for option exercise         73,800    
Collaborative Arrangement | Maximum [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Contingent research milestone payments         13,000    
Development Milestone and Upfront Fee Recognized as Research and Development Expense         12,600,000    
Collaborative Arrangement | Roche Holding A.G. [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Deferred revenue   395,400 395,400   395,400   $ 455,300
Deferred Revenue, Current   395,400 395,400   395,400   130,300
Total Roche supply agreement revenue     63,500   175,500    
Research and development expense     25,700 $ 17,900 54,200 $ 39,600  
Collaboration Receivable   73,300 $ 73,300   73,300   $ 34,600
Collaborative Arrangement | Nationwide Childrens Hospital [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Milestone payment received   $ 63,500          
Nationwide License Agreement [Member] | Nationwide Childrens Hospital [Member]              
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]              
Milestone payment received         $ 5,100