v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail)
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
shares
Nov. 30, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
Customers
Jun. 30, 2025
USD ($)
Customers
Jun. 30, 2026
USD ($)
Customers
Jun. 30, 2025
USD ($)
Customers
Dec. 31, 2025
USD ($)
Significant Accounting Policies [Line Items]              
Goodwill, impairment loss     $ 0 $ 0 $ 0 $ 0  
Allowance for doubtful accounts     0   0   $ 0
Impairment of Long-Lived Assets to be Disposed of     0 0 0 0  
Capitalized materials and supplies     10,400,000 2,100,000 20,700,000 4,200,000  
Credit losses and impairments     0 0 0 0  
Financial assurances outstanding amount     5,200,000   5,200,000   5,200,000
Amortization expenses     32,700,000 5,400,000 64,500,000 7,600,000  
Finite-lived intangible assets, net amount     778,874,000   778,874,000   $ 767,432,000
University of Chicago [Member]              
Significant Accounting Policies [Line Items]              
Prepayment of research and development service arrangement   $ 68,700,000          
University Of Cambridge [Member]              
Significant Accounting Policies [Line Items]              
Prepayment of research and development service arrangement $ 73,100,000            
Excess and Obsolescence [Member]              
Significant Accounting Policies [Line Items]              
Excess and obsolescence charges     0   0    
Materials and Supplies Excess and Obsolescence [Member]              
Significant Accounting Policies [Line Items]              
Excess and obsolescence charges     0 $ 0 0 $ 0  
Commercial Contract [Member] | University of Chicago [Member]              
Significant Accounting Policies [Line Items]              
Revenue recognized     4,300,000   13,500,000    
Commercial Contract [Member] | University Of Cambridge [Member]              
Significant Accounting Policies [Line Items]              
Revenue recognized     $ 0   $ 0    
Revenue Benchmark [Member]              
Significant Accounting Policies [Line Items]              
Number of customers over ten percent benchmark | Customers     2 2 2 3  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Minimum [Member]              
Significant Accounting Policies [Line Items]              
Concentration risk, percentage     10.00%   10.00%    
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customer [Member]              
Significant Accounting Policies [Line Items]              
Concentration risk, percentage     33.00% 65.00% 27.00% 73.00%  
Software and Software Development Costs [Member]              
Significant Accounting Policies [Line Items]              
Useful Life     3 years   3 years    
Externally Use Software [Member]              
Significant Accounting Policies [Line Items]              
Intangible asset capitalized during period     $ 0 $ 0 $ 0 $ 0  
Research and Development [Member] | University of Chicago [Member]              
Significant Accounting Policies [Line Items]              
Amortization expenses     1,700,000   3,400,000    
Research and Development [Member] | University Of Cambridge [Member]              
Significant Accounting Policies [Line Items]              
Amortization expenses     1,800,000   2,300,000    
Naming rights [Member] | University of Chicago [Member]              
Significant Accounting Policies [Line Items]              
Amortization expenses     0   0    
Finite-lived intangible assets, net amount   $ 48,100,000          
Naming rights [Member] | University Of Cambridge [Member]              
Significant Accounting Policies [Line Items]              
Amortization expenses     $ 0   $ 0    
Finite-lived intangible assets, net amount $ 14,800,000            
Common Stock [Member] | University of Chicago [Member]              
Significant Accounting Policies [Line Items]              
Stock issued during the period purchase of assets | shares   2,108,993          
Common Stock [Member] | University Of Cambridge [Member]              
Significant Accounting Policies [Line Items]              
Stock issued during the period purchase of assets | shares 2,562,642