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Stockholders' Equity (Details 1)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Dec. 31, 2016
Stockholders' Equity [Abstract]      
Risk-free interest rate 1.90% 1.90% 1.20%
Dividend yield 0.00% 0.00% 0.00%
Expected volatility 61.00% 61.00% 63.00%
Expected life 6 years 6 months 6 years 6 months 6 years 6 months