Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Fair Value Measurements (Details)

v3.20.1
Significant Accounting Policies - Fair Value Measurements (Details)
3 Months Ended
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Sep. 30, 2019
USD ($)
Liabilities          
Warrant liabilities $ 1,120,533       $ 496,343
change in fair value of the warrant liabilities          
Fair value as of September 30 1,190,477 $ 496,343 $ 104,902    
Warrants issued, assumed in connection with acquisition       $ 104,902  
Change in fair value (69,944) 694,134 38,702    
Fair value at the end 1,120,533 $ 1,190,477 $ 143,604 $ 104,902  
Fair Value Measurements Level 3 [Member]          
Liabilities          
Warrant liabilities $ 1,120,533       $ 496,343
Common stock price volatility | Minimum          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 89.6        
Common stock price volatility | Maximum          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 92.5        
Risk-free interest rate          
Liabilities          
Warrants and Rights Outstanding, Measurement Input 0.23        
Remaining contractual term (years) | Minimum          
Liabilities          
Warrants and Rights Outstanding, Term 1 year 8 months 12 days        
Remaining contractual term (years) | Maximum          
Liabilities          
Warrants and Rights Outstanding, Term 2 years