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STOCK-BASED COMPENSATION (Schedule of Shares and Units of Restricted Common Stock) (Details) - $ / shares
shares in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Systemic Bio Phantom Unit Plan      
Number of Shares/Units      
Outstanding at beginning of year — unvested (in shares) 721 596  
Outstanding at end of year — unvested (in shares)   721 596
Restricted Stock Units (RSUs)      
Number of Shares/Units      
Outstanding at beginning of year — unvested (in shares) 5,185 6,182 5,015
Granted (in shares) 2,958 3,392 4,439
Cancelled (in shares) (1,323) (1,845) (1,118)
Vested (in shares) (1,659) (2,544) (2,154)
Outstanding at end of year — unvested (in shares) 5,161 5,185 6,182
Weighted Average Grant Date Fair Value      
Outstanding at beginning of year — unvested (in dollars per share) $ 7.16 $ 14.77 $ 18.19
Granted (in dollars per share) 2.25 1.98 10.26
Cancelled (in dollars per share) 4.37 14.69 15.45
Vested (in dollars per share) 7.14 13.28 13.09
Outstanding at end of year — unvested (in dollars per share) $ 5.06 $ 7.16 $ 14.77
Phantom Share Units (PSUs) | Systemic Bio Phantom Unit Plan      
Number of Shares/Units      
Granted (in shares)   147 597