Quarterly report pursuant to Section 13 or 15(d)

Share Based Compensation - Summary of Share-based Compensation Expense (Details)

v3.7.0.1
Share Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($)
3 Months Ended 9 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Jul. 31, 2017
Jul. 31, 2016
Share-based compensation expense $ 14,370,314 $ 5,008,365 $ 24,694,464 $ 19,369,948
Research and Development [Member]        
Share-based compensation expense 1,517,585 1,014,034 4,271,073 7,088,377
General and Administrative [Member]        
Share-based compensation expense $ 12,852,729 $ 3,994,331 $ 20,423,391 $ 12,281,571