STOCK BASED COMPENSATION (Details) - Employee Stock Purchase Plan	3 Months Ended
Jan. 31, 2020
Employee Stock Purchase Plan [Member]
STOCK BASED COMPENSATION (Details) - Employee Stock Purchase Plan [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%

Purchase price of common stock expressed as a percentage of its fair value.

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration