Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Stock Option Activity (Details)

v3.20.2
Stock-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Number of Shares    
Beginning balance - Outstanding (shares) 526,070  
Granted (shares) 324,437  
Exercised (shares) (166)  
Forfeited/Cancelled(shares) (32,486)  
Ending balance - Outstanding (shares) 817,855 526,070
Exercisable (shares) 415,309  
Vested or expected to vest (shares) 817,855  
Weighted- Average Exercise Price    
Beginning balance - Outstanding (in dollars per share) $ 30.55  
Granted (in dollars per share) 8.39  
Exercised (in dollars per share) 8.60  
Forfeited/Cancelled (in dollars per share) 26.46  
Ending balance - Outstanding (in dollars per share) 21.92 $ 30.55
Exercisable (in dollars per share) 33.06  
Vested or expected to vest (in dollars per share) $ 21.92  
Weighted- Average Remaining Contractual Life (in years)    
Balance - Outstanding 7 years 9 months 18 days 7 years 7 months 13 days
Exercisable 6 years 9 months 21 days  
Vested or expected to vest 7 years 9 months 18 days  
Aggregate Intrinsic Value ($000)    
Balance - Outstanding $ 0 $ 60
Exercisable 0  
Vested and expected to vest $ 0