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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Assumptions Used to Calculate the Fair Value of Option Grants
The following table reflects assumptions used to calculate the fair value of time-based stock option grants under the 2014 Amended Plan and the Inducement Plan for the years ended December 31, 2023 and 2022:
December 31,
 20232022
Risk-free interest rate3.38%—4.79%2.84%—3.85%
Dividend yield—%—%
Expected option term (in years)4.0—6.06.0
Expected stock price volatility120%—141%290%—284%
Schedule of the Options Activity
The following tables reflects the time-based stock option activity for the year ended December 31, 2023 (dollar amounts in thousands):
 
 SharesWeighted-
Average
Exercise
Price		Weighted-
Average
Remaining
Contractual
Term (years)		Aggregate
Intrinsic Value
(in thousands)
Options outstanding as of December 31, 20223,270,479 $2.62 
Options granted755,680 $5.10 
Options exercised(133,206)$1.50 
Options forfeited (77,804)$3.96 
Options expired(17,330)$29.15 
Options outstanding as of December 31, 20233,797,819 $3.00 7.5$— 
Options vested and expected as of vest at December 31, 20233,797,819 $3.00 7.5$— 
Options exercisable as of December 31, 20231,707,697 $2.97 7.8$— 
Schedule of Restricted Stock Units and Performance-based Restricted Stock Units Activity
The following table reflects the time-based RSU activity for the year ended December 31, 2023 (dollar amounts in thousands): 
 Number of
Shares		Weighted
Average
Grant Date
Fair 
Value
Per Share		Weighted
Average
Remaining
Contractual
Term
(in years)
Non-vested restricted stock units as of December 31, 20222,934,096 $2.92  
Granted977,425 $4.76  
Vested(1,388,011)$2.89  
Forfeited(63,634)$4.57  
Non-vested restricted stock units as of December 31, 20232,459,876 $3.62 0.9