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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 ($)
Mar. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 23, 2020
Jun. 30, 2020
Jan. 08, 2020
USD ($)
Sep. 30, 2019
NOTES PAYABLE                    
Repayment of notes     $ 200,000 $ 975,000 $ 2,106,000 $ 5,898,000        
Exercise price of warrants | $ / shares   $ 1.00   $ 1.00            
Number of shares issued by each warrant | shares   1   1            
Debt principal amount converted       $ 250,000 957,056          
Additional paid-in capital $ 75,891,414   78,632,934   75,891,414 61,468,034        
Deemed dividends         $ 830,494 2,341,000        
Warrant cashless exercises, Shares | shares         259,415          
Mortgage Loan                    
NOTES PAYABLE                    
Aggregate principal amount                 $ 975,000  
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           $ 1,000,000.0        
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                
Debt principal amount converted         $ 250,000          
Number of warrants issued upon conversion | shares   6,993,000                
Additional paid-in capital 3,653       3,653          
Amortization of debt discount     $ 0 69,159 279,676 $ 2,883        
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 $ 2,944 $ 0        
10% Notes | Extinguishment of debt                    
NOTES PAYABLE                    
Additional paid-in capital $ 131,000       131,000          
12% Notes 2019 [Member]                    
NOTES PAYABLE                    
Aggregate principal amount   $ 1,506,000   $ 1,506,000            
Interest rate (as a percent)                   12.00%
Amortization of debt discount         $ 12,635 $ 23,432        
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% 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          
Common Stock awards                    
NOTES PAYABLE                    
Warrant cashless exercises, Amount         $ 33,961          
Warrant cashless exercises, Shares | shares         259,415