Quarterly report pursuant to Section 13 or 15(d)

Warrants and Derivative Liabilities (Detail Textuals 1)

v3.19.2
Warrants and Derivative Liabilities (Detail Textuals 1) - USD ($)
 1 Months Ended 6 Months Ended
Jan. 19, 2018
Dec. 28, 2017
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Class of Warrant or Right [Line Items]            
Less, noncurrent portion of derivative liabilities     $ 516,377 $ 0 $ 219,453 $ 551,322
Change in fair market value at the re-measurement date recorded as non-operating income     (5,151,124) 602,749    
Fair value of warrants issued in connection with financings     516,058 10,784,634    
Series B conversion liability            
Class of Warrant or Right [Line Items]            
Change in fair market value at the re-measurement date recorded as non-operating income       0    
Provision for conversion of Series B preferred stock       6,715    
Fair value of warrants issued in connection with financings       0    
Emerald Convertible Promissory Note - conversion liability            
Class of Warrant or Right [Line Items]            
Change in fair market value at the re-measurement date recorded as non-operating income       185,000    
Fair value of warrants issued in connection with financings       $ 360,000    
Change in fair value of warrant liability $ 360,000 $ 265,000        
Emerald Multi-Draw Credit Agreement Warrants            
Class of Warrant or Right [Line Items]            
Change in fair market value at the re-measurement date recorded as non-operating income     (219,134)      
Fair value of warrants issued in connection with financings     516,058      
Series B Warrants            
Class of Warrant or Right [Line Items]            
Warrant exercise price   $ 0.10        
Proceeds from financing between conversion liability and warrants     $ 5,000,000      
Series B Warrants | Bridge Loan | Secured promissory note and security agreement            
Class of Warrant or Right [Line Items]            
Initial conversion price $ 0.00          
2015 Common Stock Warrants            
Class of Warrant or Right [Line Items]            
Warrant exercise price     $ 1.15      
2015 Common Stock Warrants | Minimum            
Class of Warrant or Right [Line Items]            
Warrant exercise price     $ 1.15