Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Summary of Number of Options Outstanding and Weighted-average Exercise Price (Details)

v3.20.2
Share-Based Compensation - Summary of Number of Options Outstanding and Weighted-average Exercise Price (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Compensation Related Costs [Abstract]    
Number of Shares, Options outstanding Beginning Balance 1,150,270  
Number of Shares, Granted 64,840  
Number of Shares, Forfeited (42,438)  
Number of Shares, Expired (25,182)  
Number of Shares, Options outstanding Ending Balance 1,147,490 1,150,270
Number of Shares, Exercisable at September 30, 2020 (unaudited) 726,707  
Weighted Average Exercise Price, Options outstanding Beginning Balance $ 7.92  
Weighted Average Exercise Price, Granted 1.69  
Weighted Average Exercise Price, Forfeited 8.00  
Weighted Average Exercise Price, Expired 8.33  
Weighted Average Exercise Price, Options outstanding Ending Balance 7.56 $ 7.92
Weighted Average Exercise Price, Exercisable at September 30, 2020 (unaudited) $ 7.94  
Weighted Average Remaining Contractual Life in Years, Options outstanding 6 years 5 months 23 days 8 years 7 months 2 days
Weighted Average Remaining Contractual Life in Years, Exercisable at September 30, 2020 (unaudited) 5 years 5 months 12 days  
Aggregate Intrinsic Value, Options outstanding $ 254  
Aggregate Intrinsic Value, Options outstanding   $ 254