Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED COMPENSATION (Details) - Stock options outstanding and exercisable under the 2018 Share Plan

v3.19.2
STOCK BASED COMPENSATION (Details) - Stock options outstanding and exercisable under the 2018 Share Plan - 2018 Share Plan [Member] - $ / shares
9 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Range Of Exercise Prices $3.70 To $4.61 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Options Outstanding, Number 3,470,000  
Options Outstanding,Weighted Average Remaining Contractual Life 8 years 284 days  
Options Outstanding, Weighted Average Exercise Price $ 3.73  
Options Exercisable, Number 1,321,111  
Options Exercisable,Weighted Average Remaining Contractual Life 8 years 281 days  
Options Exercisable, Weighted Average Exercise Price $ 3.73  
Range Of Exercise Prices $3.70 To $3.84 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Options Outstanding, Number   3,422,000
Options Outstanding,Weighted Average Remaining Contractual Life   9 years 281 days
Options Outstanding, Weighted Average Exercise Price   $ 3.71
Options Exercisable, Number   167,779
Options Exercisable,Weighted Average Remaining Contractual Life   9 years 277 days
Options Exercisable, Weighted Average Exercise Price   $ 3.73