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Stock Based Compensation (Details 1)
9 Months Ended
Sep. 30, 2019
$ / shares
Weighted average exercise price $ 2.55
Weighted average grant date fair value $ 1.16
Assumptions  
Expected term (in years) 6 years 3 months 19 days
Expected dividend yield 0.00%
Minimum [Member]  
Assumptions  
Expected volatility 88.00%
Risk-free interest rate 1.72%
Maximum [Member]  
Assumptions  
Expected volatility 89.00%
Risk-free interest rate 2.31%