Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details Narrative)

v3.20.1
Subsequent Events (Details Narrative) - USD ($)
12 Months Ended
Jan. 19, 2020
Jan. 14, 2020
Mar. 19, 2019
Dec. 31, 2019
Dec. 31, 2018
Feb. 19, 2020
Net proceeds from public offering of common stock     $ 27,800,000 $ 30,103,306  
Common stock, par value       $ 0.0001 $ 0.0001  
Equity Sales Agreement [Member]            
Proceeds from issuance of debt       $ 10,400,000    
Subsequent Event [Member]            
Net proceeds from public offering of common stock   $ 50,000,000        
Subsequent Event [Member] | Maximum [Member] | Equity Sales Agreement [Member] | Cantor Fitzgerald & Co. [Member]            
Net proceeds from public offering of common stock $ 30,000,000          
Subsequent Event [Member] | After Deducting Underwriting Discounts and Commissions [Member]            
Net proceeds from public offering of common stock   46,700,000        
Subsequent Event [Member] | Common Stock [Member]            
Net proceeds from public offering of common stock   $ 32,300,000        
Purchase price   $ 1.55        
Subsequent Event [Member] | Common Stock [Member] | Equity Sales Agreement [Member]            
Common stock, par value           $ 0.0001
Subsequent Event [Member] | Common Stock [Member] | Maximum [Member]            
Options to purchase an additional shares of common stock   4,800,000