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Leases - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Dec. 31, 2025
Lessee Lease Description [Line Items]            
Operating lease cost $ 1,200,000 $ 1,700,000 $ 2,200,000 $ 3,000,000    
Short-term lease expense 2,300,000 2,200,000 4,800,000 4,600,000    
Material expenses associated with variable leases 0 $ 0 0 $ 0    
Operating lease right-of-use assets 16,016,000   16,016,000     $ 3,178,000
Non-current operating lease liabilities 9,136,000   9,136,000     1,426,000
Current operating lease liabilities 2,434,000   2,434,000     3,112,000
Prepaid expenses and other current assets $ 14,746,000   $ 14,746,000     $ 15,592,000
Minimum [Member]            
Lessee Lease Description [Line Items]            
Operating lease term 12 months   12 months      
Newton, Massachusetts [Member]            
Lessee Lease Description [Line Items]            
Operating lease right-of-use assets         $ 14,100,000  
Non-current operating lease liabilities         8,500,000  
Current operating lease liabilities         3,500,000  
Prepaid expenses and other current assets         $ 2,100,000