Quarterly report pursuant to Section 13 or 15(d)

Equity (Details Textual)

v3.10.0.1
Equity (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Equity (Textual)        
Fair value of warrants   $ 400,000   $ 300,000
Unrecognized compensation expense     $ 3,200,000  
Net proceeds on exercise of warrants     $ 4,849
Common Stock [Member]        
Equity (Textual)        
Sales of aggregate of commonstock units 30,237,894      
Shares of common stock, shares 30,237,894      
Gross proceeds $ 15,100,000      
Net proceeds on exercise of warrants 13,800,000      
Gross proceeds from warrants exercised $ 20,400,000      
Sale of units, price per unit $ 0.50      
Series A warrants [Member]        
Equity (Textual)        
Warrants exercise price     $ 0.60  
Warrants exercisable period     1 year  
Fair value of warrants     $ 500,000  
Fair value assumptions, expected life     1 year  
Fair value assumptions, expected discount rate     2.06%  
Fair value assumptions, expected volatility rate     72.00%  
Fair value assumptions, expected dividend rate     0.00%  
Aggregate series warrants 7,559,445      
Description of warrant exercisable Each series A warrant exercisable for one share of Common Stock at an exercise price of $0.60 per share.      
Series B warrants [Member]        
Equity (Textual)        
Warrants exercise price     $ 0.70  
Warrants exercisable period     2 years 6 months  
Fair value of warrants     $ 2,500,000  
Fair value assumptions, expected life     2 years 6 months  
Fair value assumptions, expected discount rate     2.33%  
Fair value assumptions, expected volatility rate     71.00%  
Fair value assumptions, expected dividend rate     0.00%  
Aggregate series warrants 22,678,393      
Description of warrant exercisable Each series B warrant exercisable for one share of Common Stock at an exercise price of $0.70 per share.      
Stock Options [Member]        
Equity (Textual)        
Number of warrant granted     3,565,159  
Stock options, term     10 years  
Stock options, vesting period     4 years  
Fair value of stock options     $ 1,700,000  
Fair value assumptions, expected life     6 years  
Fair value assumptions, expected dividend rate     0.00%  
Options to purchase common shares, cancelled     1,100,000  
Total option expense     $ 1,300,000 $ 2,500,000
Stock Options [Member] | Minimum [Member]        
Equity (Textual)        
Options exercise price     $ 0.34  
Fair value assumptions, expected discount rate     2.34%  
Fair value assumptions, expected volatility rate     79.10%  
Stock Options [Member] | Maximum [Member]        
Equity (Textual)        
Options exercise price     $ 0.7829  
Fair value assumptions, expected discount rate     2.94%  
Fair value assumptions, expected volatility rate     80.40%  
Warrant [Member]        
Equity (Textual)        
Fair value of warrants     $ 27,000  
Number of warrant granted     120,628  
Number of warrants issued to consultants     120,628  
Warrant [Member] | Minimum [Member]        
Equity (Textual)        
Warrants exercise price     $ 0.36  
Warrant [Member] | Maximum [Member]        
Equity (Textual)        
Warrants exercise price     $ 0.65