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Common Stock Options (Details 1)
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Expected life in years 5 years 6 months 5 years
Weighted Avg. Expected Volatility 92.00%  
Expected dividend yield 0.00% 0.00%
Minimum    
Risk-free interest rate 1.23% 1.49%
Weighted Avg. Expected Volatility   88.40%
Maximum    
Risk-free interest rate 1.41% 1.70%
Weighted Avg. Expected Volatility   105.30%