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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of assumptions used to calculate Black-Scholes option Pricing Model for stock options granted

The following table illustrates the various assumptions used to calculate the Black-Scholes option pricing model for stock options granted during the periods presented:

 

For the three months ended   June 30, 2017    June 30, 2016 
Weighted-average risk-free interest rates:        
Dividend yield:        
Weighted-average expected life of the option:        
Weighted-average expected stock price volatility:        

Weighted-average fair value of the options granted:

        

  

For the six months ended  June 30,
2017
   June 30,
2016
 
Weighted-average risk-free interest rates:   2.1%   1.4%
Dividend yield:        
Weighted-average expected life of the option:   7 Years    7 Years 
Weighted-average expected stock price volatility:   94%   95%
Weighted-average fair value of the options granted:  $0.55   $0.34