CANADIAN EMERGENCY WAGE SUBSIDY - Schedule of Canadian Emergency Wage Subsidy (Details) - CEWS receivable $ in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2021 USD ($)	Aug. 01, 2020 USD ($)	Jul. 31, 2021 CAD ($)	Jul. 31, 2021 USD ($)	Aug. 01, 2020 USD ($)
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 836	$ 0	$ 52.2	$ 41,280	$ 0
Product
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	94	0		4,283	0
Service
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	47	0		2,667	0
CEWS benefit in cost of goods sold
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	141	0		6,950	0
Research and development
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	596	0		29,519	0
Sales and marketing
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	53	0		2,604	0
General and administrative
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	46	0		2,207	0
CEWS benefit in operating expense
Unusual or Infrequent Item, or Both [Line Items]
Total CEWS benefit	$ 695	$ 0		$ 34,330	$ 0