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STOCKHOLDERS' EQUITY (Series B Preferred Stock) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Aug. 31, 2017
Mar. 31, 2020
Mar. 31, 2019
Feb. 29, 2020
Dec. 31, 2019
Apr. 30, 2018
Aug. 25, 2017
Class of Stock [Line Items]              
Preferred stock, par value (in dollars per share)   $ 0.01     $ 0.01    
Preferred stock, shares authorized (in shares)   15,000,000     15,000,000    
Preferred stock, shares outstanding (in shares)   47     47    
Preferred stock, shares issued (in shares)   47     47    
Offering Warrants              
Class of Stock [Line Items]              
Stock rights issued (in shares) 178,666            
Exercise price (in dollars per share) $ 45.00 $ 0.40   $ 2.25      
Preferred Class B              
Class of Stock [Line Items]              
Preferred stock, par value (in dollars per share)             $ 0.01
Number of shares converted (in shares)   0 0        
Preferred stock, shares authorized (in shares)   6,900     6,900   6,900
Preferred stock, shares outstanding (in shares)   47     47    
Preferred stock, shares issued (in shares)   6,900     6,900    
Preferred Stock, Liquidation Preference Per Share             $ 1,000
2018 Note Agreement | Preferred Class B              
Class of Stock [Line Items]              
Conversion price (in dollars per share)   $ 0.40       $ 2.25  
2018 Note Agreement | Preferred Class B | Deemed Dividend K              
Class of Stock [Line Items]              
Beneficial conversion feature   $ 3.3