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Stock Based Compensation (Details 1)
6 Months Ended
Jun. 30, 2020
$ / shares
Weighted average exercise price $ 5.18
Weighted average grant date fair value $ 4.02
Assumptions  
Expected dividend yield 0.00%
Minimum [Member]  
Assumptions  
Expected volatility 87.00%
Weighted average expected term (in years) 6 years 3 months 19 days
Risk-free interest rate 0.43%
Maximum [Member]  
Assumptions  
Expected volatility 90.00%
Weighted average expected term (in years) 10 years
Risk-free interest rate 1.47%