Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Summary of Restricted Ordinary Shares Activity (Details)

v3.19.2
Share-Based Compensation - Summary of Restricted Ordinary Shares Activity (Details) - Restricted Ordinary Shares
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Number of Shares  
Number of Shares, Unvested, Beginning balance | shares 86,068
Number of Shares, Vested | shares (51,906)
Number of Shares, Unvested, Ending balance | shares 34,162
Weighted Average grant date fair value per share  
Weighted Average grant date fair value per share, Unvested, Beginning balance | $ / shares $ 3.14
Weighted Average grant date fair value per share, Vested | $ / shares 3.14
Weighted Average grant date fair value per share, Unvested, Ending balance | $ / shares $ 3.14