Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details 1)

v3.7.0.1
Stock-based Compensation (Details 1)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Dividend yield 0.00% 0.00% 0.00% 0.00%
Risk-free interest rate 1.88%      
Risk-free interest rate, minimum   1.28% 1.88% 1.24%
Risk-free interest rate, maximum   1.43% 2.29% 1.78%
Expected term (in years) 6 years      
Volatility 77.00% 78.00% 77.00% 78.00%
Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term (in years)   5 years 6 years 5 years
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term (in years)   6 years 9 years 10 years