STOCK BASED COMPENSATION (Details) - Stock options outstanding and exercisable that were not granted under the 2003 Share Plan, the 2010 Share Plan or the 2018 Plan - Stock Options Not Granted Under 2003 Share Plan, 2010 Share Plan or 2018 Share Plan [Member]	6 Months Ended
	Apr. 30, 2018 $ / shares shares
Range Of Exercise Prices $0.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding and Exercisable, Number \| shares	1,046,000
Options Outstanding and Exercisable, Weighted Average Remaining Contractual Life	4 years 149 days
Options Outstanding and Exercisable, Weighted Average Exercise Price (in Dollars per share) \| $ / shares	$ 0.67
Range Of Exercise Prices $2.58 To $5.56 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding and Exercisable, Number \| shares	734,000
Options Outstanding and Exercisable, Weighted Average Remaining Contractual Life	3 years 317 days
Options Outstanding and Exercisable, Weighted Average Exercise Price (in Dollars per share) \| $ / shares	$ 2.88