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STOCKHOLDERS' EQUITY (Offering Warrants) (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2020
Aug. 31, 2017
Dec. 31, 2020
Dec. 31, 2019
Feb. 29, 2020
Class of Stock [Line Items]          
Deemed dividend     $ 3,344,000 $ 0  
Offering Warrants          
Class of Stock [Line Items]          
Stock rights issued (in shares)   178,666      
Exercise price (in dollars per share) $ 0.40 $ 45.00     $ 2.25
Class of warrant or right, term   5 years      
Warrants exercised       6,800  
Proceeds from issuance of warrants       $ 15,000  
Intrinsic value of warrants exercisable       $ 36,000  
Offering Warrants | Deemed Dividend B          
Class of Stock [Line Items]          
Deemed dividend $ 6,000