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CONVERTIBLE NOTES (Convertible Promissory Notes) (Details) - USD ($)
3 Months Ended 12 Months Ended
Jan. 15, 2019
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Apr. 16, 2019
Jan. 29, 2019
Debt Instrument [Line Items]            
Payments on notes   $ 145,000 $ 109,000      
Conversion of interest on convertible debt into common stock   325,000 2,933,000      
Proceeds from issuance of common stock   1,350,000 1,726,000      
Proceeds from issuance of debt     250,000      
Leviston Note [Member]            
Debt Instrument [Line Items]            
Outstanding debt   $ 0   $ 0    
Crede Note            
Debt Instrument [Line Items]            
Payments on notes     $ 0      
Number of shares converted from debt instrument (in shares)   270,699 0 270,699    
Outstanding debt   $ 0     $ 1,450,000  
Issuance of convertible notes $ 1,450,000          
Conversion price based on closing bid price of common stock on the date prior to each conversion date (as a percent) 90.00%          
Proceeds from issuance of common stock $ 4,000,000          
Beneficial Ownership Cap 4.99%          
Leviston Resources LLC            
Debt Instrument [Line Items]            
Conversion of interest on convertible debt into common stock   $ 200,000   $ 500,000    
Number of shares converted from debt instrument (in shares)   73,333   111,024    
Settled Litigation | Leviston Resources LLC            
Debt Instrument [Line Items]            
Issuance of convertible notes           $ 700,000
Maximum | Crede Note            
Debt Instrument [Line Items]            
New shares issued (in shares)   10,000        
Percentage of daily average composite trading volume   10.00%        
Maximum | Leviston Resources LLC            
Debt Instrument [Line Items]            
Payments on notes   $ 100,000