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FAIR VALUE MEASUREMENTS - Change in Fair Value (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Liabilities        
Principal repayments on long-term loan     $ (31,515,000)  
Long-Term Loan        
Liabilities        
Beginning Balance $ 29,194,000 $ 28,462,000 28,923,000 $ 28,545,000
Principal repayments on long-term loan (31,515,000)   (31,515,000)  
Change in fair value 2,321,000 169,000 2,592,000 86,000
Ending Balance 0 28,631,000 0 28,631,000
Orbimed Warrant liability        
Liabilities        
Beginning Balance 42,000 215,000 72,000 240,000
Change in fair value 1,000 (61,000) (29,000) (86,000)
Ending Balance 43,000 154,000 43,000 154,000
Pre-funded warrant liability        
Liabilities        
Beginning Balance 3,061,000 15,301,000 5,896,000  
Issuance       24,457,000
Exercise     (1,750,000)  
Change in fair value 289,000 (3,401,000) (796,000) (12,557,000)
Ending Balance $ 3,350,000 $ 11,900,000 $ 3,350,000 $ 11,900,000