Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Share-Based Compensation - Summary of Number of Options Outstanding and Weighted-average Exercise Price (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Compensation Related Costs [Abstract]    
Number of Shares, Options outstanding Beginning Balance 248,128  
Number of Shares, Granted 447,984  
Number of Shares, Options outstanding Ending Balance 696,112 248,128
Number of Shares, Vested at June 30, 2018 (unaudited) 32,196  
Number of Shares, Exercisable at June 30, 2018 (unaudited) 32,196  
Weighted Average Exercise Price, Options outstanding Beginning Balance $ 3.31  
Weighted Average Exercise Price, Granted 12.99  
Weighted Average Exercise Price, Options outstanding Ending Balance 9.54 $ 3.31
Weighted Average Exercise Price, Exercisable at June 30, 2018 (unaudited) $ 3.17  
Weighted Average Remaining Contractual Life in Years, Options outstanding 9 years 6 months 25 days 9 years 5 months 8 days
Weighted Average Remaining Contractual Life in Years, Granted 9 years 11 months 1 day  
Weighted Average Remaining Contractual Life in Years, Exercisable at June 30, 2018 (unaudited) 8 years 1 month 24 days  
Aggregate Intrinsic Value, Options outstanding $ 1,825  
Aggregate Intrinsic Value, Exercisable at June 30, 2018 (unaudited) $ 766