SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property And Equipment (Details) - Office equipment and furniture	12 Months Ended
Oct. 31, 2020
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property and equipment	3 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives of property and equipment	5 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration