Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Options Activity (Details)

v3.20.1
Stock-Based Compensation - Schedule of Options Activity (Details) - $ / shares
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Weighted Average Remaining Life (in years)    
Weighted Average Remaining Life (in years) 1 year 7 months 6 days  
Stock Options [Member]    
Options outstanding    
Beginning balance 3,139,537  
Granted 293,220  
Forfeited (160,360)  
Ending balance 3,272,397 3,139,537
Exercisable at the end of the period 1,254,958  
Vested and expected to vest at the end of the period 3,272,397  
Weighted Average Remaining Life (in years)    
Weighted Average Remaining Life (in years) 8 years 3 months 8 years 1 month 2 days
Exercisable at the end of the period 6 years 5 months 1 day  
Vested and expected to vest at the end of the period 8 years 3 months  
Weighted Average Exercise Price    
Beginning balance $ 15.50  
Granted 1.23  
Forfeited 20.60  
Ending balance 13.97 $ 15.50
Exercisable at the end of the period 25.33  
Vested and expected to vest at the end of the period $ 13.97