Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share-based Compensation - Summary of the Share Options Activities (Details)

v3.20.1
Share-based Compensation - Summary of the Share Options Activities (Details) - Options - USD ($)
 1 Months Ended 9 Months Ended 12 Months Ended
Nov. 30, 2018
Dec. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Number of shares        
Outstanding at the beginning of the period (in shares)   2,451,067 1,142,212 2,377,067
Granted (in shares)   50,000 70,000 1,053,150
Exercised (in shares)       (119,792)
Forfeited (in shares)   (50,000) (809,712) (123,438)
Cancelled (in shares) (1,772,584)     (1,901,752)
Expired (in shares)   (74,000)   (143,023)
Outstanding at the end of the period (in shares)   2,377,067 402,500 1,142,212
Vested and expected to vest at the end of the period (in shares)     402,500  
Exercisable at the end of the period (in shares)     122,082  
Weighted average exercise        
Outstanding at the beginning of the period (in dollars per share)   $ 2.21 $ 0.67 $ 2.18
Granted (in dollars per share)   2.35 0.50 0.58
Exercised (in dollars per share)       1.77
Forfeited (in dollars per share)   1.71 0.61 1.71
Cancelled (in dollars per share)       2.13
Expired (in dollars per share)   3.60   3.89
Outstanding at the end of the period (in dollars per share)   $ 2.18 0.75 $ 0.67
Vested and expected to vest at the end of the period (in dollars per share)     0.75  
Exercisable at the end of the period (in dollars per share)     $ 0.90  
Weighted remaining contractual Years        
Vested and expected to vest at the end of the period     8 years 7 months 2 days  
Exercisable at the end of the period     8 years 3 months 29 days  
Aggregate intrinsic value        
Vested and expected to vest at the end of the period (in dollars)     $ 35,753  
Exercisable at the end of the period (in dollars)     $ 8,879