Quarterly report pursuant to Section 13 or 15(d)

Equity (Details Textual)

v3.19.1
Equity (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Equity (Textual)      
Preferred stock, authorized 10,000,000   10,000,000
Preferred stock, par value (in dollars per share) $ 0.0001   $ 0.0001
Common stock, authorised 490,000,000   490,000,000
Common stock, par value (in dollars per share) $ 0.0001   $ 0.0001
Preferred stock, issued 0   0
Preferred stock, outstanding 0   0
Common stock, issued 74,340,539   73,830,751
Common stock, outstanding 73,820,539   73,310,751
Stock-based compensation expense $ 2,272,747 $ 526,348  
Shares of common stock upon cashless exercise 350,856    
Purchase shares of common stock 578,891    
Non Employee Stock Option [Member]      
Equity (Textual)      
Compensation and related benefits $ 633,554 210,737  
Aggregate value of nonvested options $ 177,507    
Amortization of stock-based compensation expense 4 months 17 days    
Intrinsic value of stock options outstanding $ 1,548,000    
Intrinsic value of stock options exercisable 1,134,668    
Employee Stock Option [Member]      
Equity (Textual)      
Aggregate fair value of options granted 5,723,438 289,150  
Compensation and related benefits 1,430,860 $ 72,287  
Aggregate value of nonvested options $ 4,987,024    
Amortization of stock-based compensation expense 9 months 29 days    
Intrinsic value of stock options outstanding $ 18,042,100    
Intrinsic value of stock options exercisable $ 9,850,501