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SHELF REGISTRATION AND STOCKHOLDER RIGHTS PLAN (Details) - $ / shares
Oct. 15, 2018
Dec. 31, 2020
Dec. 31, 2019
Class of Stock [Line Items]      
Purchase price $ 0.001 $ 0.001 $ 0.001
Rights 1    
Number of securities called by each warrant or right 0.01    
Number of days after public announcement of acquiring person 10 days    
Number of days after tender or exchange offer is completed by acquiring person 10 days    
Series B Preferred Stock      
Class of Stock [Line Items]      
Purchase price $ 3.50    
Number of securities called by each warrant or right 0.01    
Minimum      
Class of Stock [Line Items]      
Ownership percentage, common stock, without approval of board 4.99%