v3.26.1
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jan. 15, 2026
Nov. 30, 2024
Jul. 31, 2023
Jan. 31, 2022
Aug. 31, 2018
Mar. 31, 2023
Sep. 30, 2018
Jun. 30, 2026
Sep. 30, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2025
Jun. 30, 2025
Other Commitments [Line Items]                          
Restricted cash               $ 7,846   $ 8,770   $ 7,845 $ 9,471
Attorneys fees to be paid by the company insurance carrier $ 1,500                        
Letter of Credit | Corporate Credit Card Program                          
Other Commitments [Line Items]                          
Restricted cash               3,000          
Letter of Credit | Fleet Program                          
Other Commitments [Line Items]                          
Restricted cash               400          
Stoke Therapeutics, Inc. [Member]                          
Other Commitments [Line Items]                          
Milestone payments payable       $ 245,000                  
Stoke Therapeutics, Inc. [Member] | Research and Development [Member]                          
Other Commitments [Line Items]                          
Upfront consideration and transaction costs       $ 60,000                  
Collaboration agreement description       Under the collaboration, the two companies will jointly share global research, development and commercialization responsibilities and share 50/50 in all worldwide costs and future profits with respect to a SYNGAP1 program                  
License Agreements [Member] | North America                          
Other Commitments [Line Items]                          
Milestone payments payable           $ 40,000              
License Agreements [Member] | Neuren Pharmaceuticals Limited [Member] | North America                          
Other Commitments [Line Items]                          
Proceeds from Sale of Intangible Assets                   $ 146,500      
Upfront payment     $ 100,000                    
Upfront license fee         $ 10,000                
Milestone payment as intangible asset           $ 40,000              
PRV liability               19,200     $ 29,600    
License Agreements [Member] | Neuren Pharmaceuticals Limited [Member] | Research and Development [Member] | North America                          
Other Commitments [Line Items]                          
Upfront payment             $ 10,000   $ 100,000        
License Agreements [Member] | Saniona                          
Other Commitments [Line Items]                          
Upfront payment   $ 28,000                      
License Agreements [Member] | Saniona | Research and Development [Member]                          
Other Commitments [Line Items]                          
Upfront payment   28,000                      
License Agreements [Member] | NNZ-2591 [Member] | Development Commercialization and Sales Milestones                          
Other Commitments [Line Items]                          
Milestone payments payable     831,300                    
Maximum                          
Other Commitments [Line Items]                          
Milestone payments payable               $ 3,600,000          
Maximum | License Agreements [Member] | Neuren Pharmaceuticals Limited [Member] | North America                          
Other Commitments [Line Items]                          
Milestone payments payable     $ 426,300   $ 455,000                
Maximum | License Agreements [Member] | Saniona                          
Other Commitments [Line Items]                          
Milestone payments payable   582,000                      
Maximum | License Agreements [Member] | Saniona | Development Commercialization and Sales Milestones                          
Other Commitments [Line Items]                          
Milestone payments payable   147,000                      
Maximum | License Agreements [Member] | Saniona | Sales                          
Other Commitments [Line Items]                          
Milestone payments payable   $ 435,000