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NOTES PAYABLE - 15% Notes (Details)
1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
EquityInstruments
$ / shares
shares
Mar. 31, 2021
USD ($)
Jun. 30, 2020
$ / shares
Mar. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 23, 2020
Sep. 30, 2019
NOTES PAYABLE                  
Repayment of notes     $ 200,000   $ 975,000        
Exercise price of warrants | $ / shares   $ 1.00     $ 1.00        
Number of shares issued by each warrant | shares   1     1        
Debt principal amount converted         $ 250,000        
Additional paid-in capital $ 75,891,414   78,632,934     $ 75,891,414      
Warrant cashless exercises, Shares | shares           259,415      
15% Notes                  
NOTES PAYABLE                  
Aggregate principal amount   $ 2,031,000     $ 2,031,000   $ 300,000    
Interest rate (as a percent) 15.00% 15.00%     15.00% 15.00% 15.00%   12.00%
Face amount of debt exchanged             $ 1.0    
Repayment of notes $ 2,100,000   200,000            
Proceeds from debt   $ 525,000     $ 525,000   $ 300,000    
Repayment limit for full payment   $ 5,000,000              
Number of warrants issued | EquityInstruments   3              
Warrant exercise price, decrease (in dollars per share) | $ / shares       $ 0.3983          
Debt principal amount converted           $ 250,000      
Number of warrants issued upon conversion | shares   6,993,000              
Amortization of debt discount     $ 0   69,159        
15% Notes | Extinguishment of debt                  
NOTES PAYABLE                  
Additional paid-in capital 668,335         668,335      
10% Notes                  
NOTES PAYABLE                  
Aggregate principal amount $ 2,940,000         $ 2,940,000      
Interest rate (as a percent) 10.00%   10.00%     10.00% 10.00% 10.00%  
Amortization of debt discount     $ 21,393   0        
12% Notes                  
NOTES PAYABLE                  
Aggregate principal amount   $ 1,506,000     $ 1,506,000        
Interest rate (as a percent)                 12.00%
Warrant A 2020                  
NOTES PAYABLE                  
Number of warrants issued upon conversion | shares           250,000      
Warrants exercised | shares 1,131,000         1,131,000      
Shares issued in cashless exercise of warrants | shares 282,813                
Warrant B 2020                  
NOTES PAYABLE                  
Number of warrants issued upon conversion | shares           250,000      
Warrant C 2020                  
NOTES PAYABLE                  
Number of warrants issued upon conversion | shares           250,000      
15% Warrants                  
NOTES PAYABLE                  
Interest rate (as a percent)   15.00%   15.00% 15.00%   15.00%    
Exercise price of warrants | $ / shares   $ 0.45     $ 0.45        
15% Warrants | Debt discount                  
NOTES PAYABLE                  
Additional paid-in capital $ 333,056         $ 333,056