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NOTES PAYABLE - 2019 12% Notes (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 29, 2020
Sep. 30, 2019
Apr. 30, 2018
Dec. 31, 2020
Dec. 31, 2019
NOTES PAYABLE (Details) - 2019 12% Notes [Line Items]          
Gain (loss) on extinguishment of debt       $ (1,638,009) $ (377,300)
12% Notes 2019 [Member]          
NOTES PAYABLE (Details) - 2019 12% Notes [Line Items]          
Debt instrument, interest rate, percentage 12.00% 12.00%     12.00%
Conversion price trigger (in dollars per share)   $ 1.30      
Minimum interest payment period   1 year 1 month 6 days      
Notes issued $ 1,506,000 $ 1,506,000      
Common stock subject to purchase (in shares)   1,506,000      
Proceeds from issuance of warrants   $ 400,000      
Gain on restructuring of debt   1,106,000      
Gain (loss) on extinguishment of debt   298,500      
Warrants recorded as a debt discount and additional paid-in capital   $ 93,500      
Amortization of debt discount       12,635 $ 23,432
15% Notes [Member]          
NOTES PAYABLE (Details) - 2019 12% Notes [Line Items]          
Debt instrument, interest rate, percentage 15.00%        
Amortization of debt discount       279,676 2,883
8.5% April 2018 [Member]          
NOTES PAYABLE (Details) - 2019 12% Notes [Line Items]          
Debt instrument, interest rate, percentage     8.50%    
Proceeds from issuance of warrants     $ 7,500,000    
Warrants recorded as a debt discount and additional paid-in capital     $ 5,366,000    
Amortization of debt discount       $ 0 $ 1,575,094