v3.25.2
COMMITMENTS AND CONTINGENCIES - Narrative (Details)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
ft²
Apr. 30, 2024
USD ($)
ft²
May 31, 2023
USD ($)
shares
Jan. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
May 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
renewal_term
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
Mar. 31, 2024
ft²
Mar. 31, 2021
USD ($)
Oct. 31, 2020
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Operating lease right-of-use asset               $ 1,977   $ 1,977     $ 2,205      
Lease remaining term (in months)               3 years 10 months 24 days   3 years 10 months 24 days            
Operating lease liability, short-term               $ 553   $ 553     $ 513      
Operating lease, liability, current, statement of financial position [Extensible List]               Accrued and other liabilities   Accrued and other liabilities     Accrued and other liabilities      
Long term lease obligation               $ 1,700   $ 1,700            
Operating lease, liability, noncurrent, statement of financial position [Extensible List]               Other liabilities   Other liabilities            
Operating lease, weighted average incremental borrowing rate (in percent)               9.30%   9.30%            
Amortization expense relating to operating lease right-of-use assets               $ 200 $ 300 $ 300 $ 600          
Operating lease expenses               $ 100 $ 100 $ 100 $ 200          
Colorado Lease                                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Number of renewal terms (up to) | renewal_term                   3            
Lessee, operating lease, renewal term 5 years             3 years   3 years            
Operating lease right-of-use asset $ 300                           $ 1,600  
Lease discount rate (in percent)                             6.00%  
Lease remaining term (in months)                             12 months  
Operating lease, annual base rent 100                              
Operating lease liability, short-term 300                           $ 1,600  
Massachusetts Lease                                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Lessee, operating lease, renewal term   3 years                            
Operating lease right-of-use asset 500 $ 1,600                           $ 100
Lease discount rate (in percent)                               6.00%
Operating lease, annual base rent $ 100 $ 500                            
Area of property | ft² 2,788 10,427                       10,956    
Lessee, operating lease, term of contract (in years)   5 years                            
Operating lease liability, short-term $ 500 $ 1,900                           $ 100
Operating lease right-of-use asset derecognized   1,100                            
Operating lease liability derecognized   $ 1,200                            
ImmunoGen, Inc                                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Milestone payments                               48,000
Collaborative arrangement, milestone payment         $ 10,000 $ 3,000 $ 2,500                  
Potential royalty payments                               $ 95,000
Enable Injections                                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Milestone payments       $ 45,000                        
Potential royalty payments       150,000                        
Collaborative arrangement, rights and licenses fee       $ 15,000                        
Third Party Collaborator                                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                                
Milestone payments     $ 45,000                          
Potential royalty payments     $ 60,000                          
Shares issued in exchange for rights granted (in shares) | shares     243,902                          
Value of shares issued in exchange for rights granted                       $ 5,700        
Collaborative arrangement, value of shares to be issued for rights granted     $ 10,000