Annual report pursuant to Section 13 and 15(d)

Equity - Private Placement (Details)

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Equity - Private Placement (Details) - USD ($)
 1 Months Ended
Nov. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Common stock, par value   $ 0.001 $ 0.001
Pre Funded Warrants      
Offering price   $ 2.4763  
Private placement      
Offering price $ 2.4763    
Estimated net proceeds $ 3,100,000    
Number of common stock, shares issued 544,950    
Warrants, exercise price     $ 2.32
Warrants, term     5 years
Private placement | Pre Funded Warrants      
Common stock, par value $ 0.001    
Number of warrants issued 868,443    
Private placement | Other Warrants [Member]      
Number of warrants issued 1,766,751    
Warrants, exercise price $ 2.32    
Warrants, term 5 years    
Private placement | Placement Agent Warrant [Member]      
Number of warrants issued 70,670    
Warrants, exercise price $ 2.9716    
Dr. Lon E. Bell, Chief Executive Officer and Chairman of the Board [Member] | Private placement      
Number of common stock, shares issued 201,914    
Number of warrants issued 252,393    
Investment made $ 500,000