v3.26.1
INTANGIBLE ASSETS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 174 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Dec. 31, 2025
Intangible Asset, Finite-Lived [Line Items]            
Payments to date under terms of agreement     $ 43,249 $ 23,870    
Gross carrying amount $ 339,737   339,737   $ 339,737 $ 293,467
Amortization of intangible assets 3,800 $ 13,600 28,700 26,100    
Ligand License Agreement            
Intangible Asset, Finite-Lived [Line Items]            
Payments payable upon achievement of milestones (up to) 114,100   114,100   114,100  
Payments to date under terms of agreement         48,700  
Royalties and milestones capitalized 25,400 11,400 $ 43,400 20,300    
Ligand License Agreement | Minimum            
Intangible Asset, Finite-Lived [Line Items]            
Annual royalty percentage     15.00%      
Ligand License Agreement | Maximum            
Intangible Asset, Finite-Lived [Line Items]            
Annual royalty percentage     17.00%      
Mission License Agreement            
Intangible Asset, Finite-Lived [Line Items]            
Annual royalty percentage     20.00%      
Royalties and milestones capitalized   $ 3,700   $ 6,900    
Royalty guarantees, commitments, amount 2,100   $ 2,100   2,100  
Gross carrying amount $ 188,400   $ 188,400   $ 188,400