Quarterly report [Sections 13 or 15(d)]

Acquisitions - HilleVax Acquisition (Details)

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Acquisitions - HilleVax Acquisition (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Right
$ / shares
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Sep. 17, 2025
USD ($)
Aug. 04, 2025
USD ($)
Asset Acquisition            
Restricted cash $ 50,802   $ 53,143      
Operating lease liabilities 22,600   21,894      
Contingent value rights liability 15,502   18,076      
Lease payments     28,144      
Contingent value rights liabilities - long-term 10,457   10,892      
Other income (expense), net     $ 4,760 $ (95)    
Leased facilities, HilleVax - Swiss Lease with lease expiration of September 30, 2026.            
Asset Acquisition            
Operating lease liabilities         $ 100  
Subleased facilities, HilleVax Sublease            
Asset Acquisition            
Percentage share of security deposit (as a percent)   100.00%        
Sublease expiry term     3 years 2 months      
Subleased facilities, HilleVax Sublease | Within twelve months of the closing date            
Asset Acquisition            
Percentage share of sublease (as a percent)     100.00%      
Subleased facilities, HilleVax Sublease | After twelve months of the closing date            
Asset Acquisition            
Percentage share of sublease (as a percent)     90.00%      
Subleased facilities, HilleVax Sublease | Restricted cash held for Boston Lease payments            
Asset Acquisition            
Restricted cash   $ 40,200        
HilleVax            
Asset Acquisition            
Asset acquisition, share price (in dollars per share) | $ / shares   $ 1.95        
Number of non-transferable contractual CVR per share | Right   1        
Total purchase consideration   $ 105,300        
Percentage share of net proceeds from disposition within two years of merger (as a percent)   90.00%        
Percentage share of unused funds in related expense fund at the end of the two-year period (as a percent)   100.00%        
Contingent value right agreement, contingent consideration probable     $ 0      
Contingent value rights liability 5,278   5,639     $ 5,600
Contingent value rights liabilities - long-term 4,124   $ 4,148      
Other income (expense), net $ 700