v3.25.4
COMMITMENTS AND CONTINGENCIES - Narrative (Details)
$ in Thousands
 1 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
ft²
Sep. 30, 2025
USD ($)
ft²
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Apr. 30, 2024
USD ($)
ft²
Mar. 31, 2024
ft²
Commitments and Contingencies [Line Items]              
Operating lease right-of-use assets     $ 2,421 $ 2,205      
Operating lease liabilities, short-term     $ 753 $ 513      
Operating lease, liability, current, statement of financial position [Extensible List]     Total accrued liabilities Total accrued liabilities      
Long term lease obligation     $ 1,900        
Operating lease, liability, noncurrent, statement of financial position [Extensible List]     Other liabilities        
Lease remaining term (in months)     3 years 6 months 4 years 3 months 18 days      
Operating lease, weighted average incremental borrowing rate (in percent)     9.20% 9.30%      
Amortization expense relating to operating lease right-of-use assets     $ 700 $ 700 $ 800    
Operating lease expenses     $ 100 $ 400 $ 400    
Massachusetts Lease              
Commitments and Contingencies [Line Items]              
Area of property | ft² 2,788 5,240       10,427 10,956
Lessee, operating lease, term of contract (in years)           5 years  
Lessee, operating lease, renewal term (in years)           3 years  
Operating lease right-of-use assets $ 500 $ 700       $ 1,600  
Operating lease liabilities, short-term 500 700       1,900  
Operating lease right-of-use asset derecognized           1,100  
Operating lease liability derecognized           $ 1,200  
Operating lease, annual base rent 100 200          
Colorado Lease              
Commitments and Contingencies [Line Items]              
Operating lease right-of-use assets $ 300            
Operating lease liabilities, short-term   $ 300