v3.26.3
Collaboration, License, and Supply Agreements - Sanofi (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2026
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Revenues   $ 68,298 $ 70,445 $ 264,510 $ 976,340    
Milestone payment   68,298 70,445 264,510 976,340    
Deferred revenue   432,212 501,356 432,212 501,356 $ 498,996 $ 1,121,886
Capitalized contract cost, amortization       600      
Royalties | Sanofi              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Revenues   6,145 4,196 10,340 4,196    
Sanofi              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       $ 350,000      
Proceeds development, tech transfer, launch, and sales milestone collaboration payment, term       20 years      
Sanofi | Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Capitalized contract cost, amortization   600 900 $ 1,800 2,700    
Sanofi | Licensed COVID-19 products and royalty payments              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       75,000      
Sanofi | Royalties              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Revenues   6,100   10,300      
Sanofi | CIC Product-Related Development Milestones              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       125,000      
Sanofi | CIC Product-Related Development Milestones | Subsequent Event              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Milestone payment $ 125,000            
Sanofi | CIC Product-Related Launch Milestones              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       225,000      
Sanofi | First Four Adjuvant Products              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       200,000      
Sanofi | Adjuvant Products Thereafter              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Development, tech transfer, launch, and sales milestone payments       210,000      
Sanofi | Transition Services              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Total licensing, royalties, and other revenue   12,600 $ 44,100 93,100 $ 108,800    
Deferred revenue   2,000   2,000      
Cumulative catch up adjustment   $ (900)   14,500      
Sanofi | Product and Service, Other              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Capitalized contract cost, amortization       $ 35,000