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Stock Options (Schedule of Fair Value Assumptions) (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk free interest rate 0.93% 0.88%
Risk-free interest rate, minimum 1.39% 1.63%
Expected term (life) of options (in years)   9 years 4 months 24 days
Expected volatility 164.47% 173.78%
Expected volatility, minimum 169.10% 176.67%
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (life) of options (in years) 10 years 4 years 7 months 24 days
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (life) of options (in years) 5 years