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] - $ / shares	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Range Of Exercise Prices $2.58 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding and Exercisable, Number	1,698,000
Options Outstanding and Exercisable, Weighted Average Remaining Contractual Life	2 years 6 months
Options Outstanding and Exercisable, Weighted Average Exercise Price (in Dollars per share)	$ 2.58
Range Of Exercise Prices $0.67 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding and Exercisable, Number		1,046,000
Options Outstanding and Exercisable, Weighted Average Remaining Contractual Life		3 years 200 days
Options Outstanding and Exercisable, Weighted Average Exercise Price (in Dollars per share)		$ 0.67
Range Of Exercise Prices $2.58 To $5.56 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding and Exercisable, Number		734,000
Options Outstanding and Exercisable, Weighted Average Remaining Contractual Life		3 years 32 days
Options Outstanding and Exercisable, Weighted Average Exercise Price (in Dollars per share)		$ 2.88