Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Stock Option Activity (Details)

v3.19.3
Share-Based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Share-Based Compensation    
Stock Options, Outstanding at beginning of the period 1,346,519  
Stock Options, Granted 0  
Stock Options, Outstanding at end of the period 1,346,519 1,346,519
Stock Options, As of December 31, 2018 vested and expected to vest 1,329,172  
Stock Options, Exercisable as of December 31, 2018 71,165  
Weighted-average Exercise Price, Outstanding at beginning of the period $ 1.45  
Weighted-average Exercise Price, Outstanding at end of the period 1.45 $ 1.45
Weighted-average Exercise Price, As of December 31, 2018 vested and expected to vest 1.46  
Weighted-average Exercise Price, Exercisable as of December 31, 2018 $ 10.92  
Weighted-average Remaining Contractual Term (in years), Outstanding 5 years 10 months 24 days 6 years 1 month 6 days
Weighted-average Remaining Contractual Term (in years), As of December 31, 2018 vested and expected to vest 5 years 9 months 18 days  
Weighted-average Remaining Contractual Term (in years), Exercisable as of December 30, 2018 3 years 4 months 24 days  
Aggregate Intrinsic Value ,Outstanding $ 0 $ 0
Aggregate Intrinsic Value, As of December 31, 2018 vested and expected to vest 0  
Aggregate Intrinsic Value, Exercisable as of December 30, 2018 $ 0