v3.26.1
LEASES - Narrative (Details)
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 27, 2026
USD ($)
ft²
extension_option
May 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
ft²
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
ft²
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, leased square feet | ft² 43,474            
Lessee, operating lease, expiration period (in months) 84 months            
Lessee, operating lease, cost of additional square foot (in dollars per sq foot) $ 1.00            
Total security deposit in connection with lease $ 800,000            
Operating lease, cost     $ 1,400,000 $ 1,200,000 $ 2,700,000 $ 2,500,000  
Operating lease, payments     $ 1,500,000 $ 1,500,000 $ 2,900,000 $ 2,900,000  
Operating lease term     6 years 2 months 12 days   6 years 2 months 12 days    
Operating lease, borrowing rate     10.42%   10.42%    
Laboratory Space              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, leased square feet | ft² 14,956            
Unrecorded unconditional purchase obligation $ 1,000,000.0            
Operating lease, increase in rent, percentage 3.00%            
Office Space              
Lessee, Lease, Description [Line Items]              
Lessee, operating lease, leased square feet | ft² 28,518            
Operating lease extensions (in extension options) | extension_option 1            
Lease extension period 5 years            
Unrecorded unconditional purchase obligation $ 900,000            
Right-of-use asset and lease liability   $ 4,600,000          
Cambridge              
Lessee, Lease, Description [Line Items]              
Area of property leased (in square feet) | ft²     65,167   65,167    
Cambridge | Letter of Credit              
Lessee, Lease, Description [Line Items]              
Total security deposit in connection with lease     $ 1,700,000   $ 1,700,000   $ 1,700,000
Cambridge | Office And Storage Space              
Lessee, Lease, Description [Line Items]              
Leased area subject to expiration | ft²     59,216   59,216    
Cambridge | Laboratory Space              
Lessee, Lease, Description [Line Items]              
Leased area subject to expiration | ft²     5,951   5,951