Annual report pursuant to Section 13 and 15(d)

Share-based Compensation (Details 1)

v3.7.0.1
Share-based Compensation (Details 1)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dividend yield 0.00% 0.00%
Risk-free interest rate Minimum 1.21% 1.54%
Risk-free interest rate Maximum 1.40% 1.71%
Volatility Minimum 76.98% 78.57%
Volatility Maximum 79.55% 89.73%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (in years) 5 years 5 years
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (in years) 6 years 18 days 6 years 18 days