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)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Dec. 31, 2019
USD ($)
$ / shares
shares
Number of Shares    
Beginning balance - Outstanding (shares) | shares 526,070  
Granted (shares) | shares 278,537  
Exercised (shares) | shares (166)  
Forfeited/Cancelled(shares) | shares (22,756)  
Ending balance - Outstanding (shares) | shares 781,685 526,070
Exercisable (shares) | shares 385,059  
Vested or expected to vest (shares) | shares 781,685  
Weighted- Average Exercise Price    
Beginning balance - Outstanding (in dollars per share) | $ / shares $ 30.55  
Granted (in dollars per share) | $ / shares 8.59  
Exercised (in dollars per share) | $ / shares 8.60  
Forfeited/Cancelled (in dollars per share) | $ / shares 20.66  
Ending balance - Outstanding (in dollars per share) | $ / shares 23.01 $ 30.55
Exercisable (in dollars per share) | $ / shares 35.22  
Vested or expected to vest (in dollars per share) | $ / shares $ 23.01  
Weighted- Average Remaining Contractual Life (in years)    
Balance - Outstanding 7 years 7 months 6 days 7 years 7 months 13 days
Exercisable 6 years 5 months 1 day  
Vested or expected to vest 7 years 7 months 6 days  
Aggregate Intrinsic Value ($000)    
Balance - Outstanding | $ $ 21 $ 60
Exercisable | $ 19  
Vested and expected to vest | $ $ 21