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STOCKHOLDERS' DEFICIT - Schedule of Stock Options Outstanding and Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Options    
Beginning balance (in shares) 3,373  
Expired (in shares) (156)  
Ending balance (in shares) 3,217 3,373
Weighted-Average Exercise Price    
Beginning balance (in dollars per share) $ 5.55  
Expired (in dollars per share) 5.89  
Ending balance (in dollars per share) $ 5.53 $ 5.55
Weighted-Average Remaining Contractual Term    
Outstanding 3 years 2 months 12 days 4 years
Aggregate Intrinsic Value    
Outstanding at beginning of year $ 0  
Outstanding at end of year $ 0 $ 0