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Stock Incentive Plan (Tables)
6 Months Ended
Jun. 30, 2019
Stock Incentive Plan  
Schedule of weighted-average assumptions for options granted

Six months ended June 30,

    

2019

2018

    

Expected term (in years)

 

5.76

6.22

Expected volatility

 

53.90

%  

49.74

%  

Risk free rate

 

1.87

%  

2.55

%  

Expected dividends

 

%  

%