Quarterly report pursuant to Section 13 or 15(d)

NET INCOME (LOSS) PER SHARE OF COMMON STOCK (Details)

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NET INCOME (LOSS) PER SHARE OF COMMON STOCK (Details) - shares
3 Months Ended 6 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2017
Employee Stock Option [Member]        
NET INCOME (LOSS) PER SHARE OF COMMON STOCK (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   3,153,472 3,840,846 3,155,872
Warrant [Member]        
NET INCOME (LOSS) PER SHARE OF COMMON STOCK (Details) [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 829,400 837,400   837,400