Annual report pursuant to Section 13 and 15(d)

Stock-based Plans and Stock-based Compensation (Valuation Assumptions) (Details)

v3.7.0.1
Stock-based Plans and Stock-based Compensation (Valuation Assumptions) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Dividend yield
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 1.23% 1.48%
Expected life (years) 6 years 3 years 7 days
Expected volatility 113.97% 114.50%
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 1.84% 1.85%
Expected life (years)   6 years 29 days
Expected volatility 114.55% 132.00%