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STOCK-BASED COMPENSATION - Schedule of Stock Option and RSU Activity (Details) - $ / shares
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Number of Shares Available for Issuance Under the Plan        
Beginning balance (in shares)     4,762,000  
Granted (in shares)     (4,024,000)  
RSUs vested (in shares)     72,000  
Forfeited or expired (in shares)     177,000  
Ending balance (in shares) 987,000   987,000  
Stock Options, Number of Shares        
Beginning balance (in shares)     32,000  
Granted (in shares)     0  
Options exercised (in shares) 0 0 0 0
Forfeited or expired (in shares)     (3,000)  
Ending balance (in shares) 29,000   29,000  
Stock Options, Weighted-Average Exercise Price        
Beginning balance (in dollars per share)     $ 5.79  
Granted (in dollars per share)     0  
Options exercised (in dollars per share)     0  
Forfeited or expired (in dollars per share)     11.60  
Ending balance (in dollars per share) $ 5.50   $ 5.50  
Restricted Stock Units        
Restricted Stock Units, Number of Shares        
Beginning balance (in shares)     2,058,000  
Granted (in shares)     4,024,000  
RSUs vested (in shares)     (551,000)  
Forfeited or expired (in shares)     (174,000)  
Ending balance (in shares) 5,357,000   5,357,000  
Restricted Stock Units, Weighted-Average Grant Date Fair Value        
Beginning balance (in dollars per share)     $ 2.57  
Granted (in dollars per share)     1.15  
RSUs vested (in dollars per share)     1.63  
Forfeited or expired (in dollars per share)     1.59  
Ending balance (in dollars per share) $ 1.47   $ 1.47