Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details)

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STOCKHOLDERS' EQUITY (Details) - USD ($)
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Class of Stock [Line Items]    
Term of warrants 5 years  
Exercise price of warrants issued $ 5.50  
Warrants to purchase shares of common stock 773,000  
Stock-based compensation expense $ 241,214 $ 21,519
Unrecognized stock-based compensation expense $ 35,710  
Unrecognized stock-based compensation expense, period of recognition 3 years 4 months 24 days  
Stock-based compensation: Common stock $ 513,103  
Stock-based compensation: Common stock (in shares) 70,040  
Warrants exercised (2,169,021)  
Exercise price of warrants exercised $ 5.07  
Net cash proceeds from exercise of warrants $ 9,274,911  
Issuance costs from exercise of warrants $ 433,127  
Common stock issued during the period 2,047,361  
2017 Plan    
Class of Stock [Line Items]    
Stock-based compensation: Common stock $ 560,520  
Stock-based compensation: Common stock (in shares) 30,040  
Minimum    
Class of Stock [Line Items]    
Exercise price of warrants exercised $ 4.20  
Maximum    
Class of Stock [Line Items]    
Exercise price of warrants exercised $ 6.25