BASIS OF PRESENTATION Error Corrections and Prior Period Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Jul. 31, 2019
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Operating expenses	$ 33,393	$ 29,504
Net loss	$ (3,551)	4,792
Adjustment of tax related liabilities
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Adjustments of tax related liabilities		$ 6,400
Operating expense | Restatement adjustment | Adjustment of tax related liabilities
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Operating expenses			$ 137,700
Net loss | Restatement adjustment
Quantifying Misstatement in Current Year Financial Statements [Line Items]
Net loss			$ (60,300)