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Stock Options (Details 1) - $ / shares
9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted average fair value of options granted (in dollars per share) $ 0.72 $ 1.08
Risk-free interest rate 1.91%  
Expected life (years) 6 years  
Expected volatility factor 49.62% 49.00%
Expected dividends 0.00% 0.00%
Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate   1.26%
Expected life (years)   5 years
Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate   1.49%
Expected life (years)   6 years