DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Changes in components of accumulated other comprehensive loss (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020
Derivative [Line Items]
Beginning Balance	$ 261		$ (2,990)
Other comprehensive income (loss) before reclassifications	47		3,677
Reclassifications	(340)	$ (30)	(719)	$ (110)
Ending Balance	(32)		(32)
Foreign Currency Translation
Derivative [Line Items]
Beginning Balance	111		(4,073)
Other comprehensive income (loss) before reclassifications	122		4,306
Ending Balance	233		233
Cash Flow Hedging
Derivative [Line Items]
Beginning Balance	150		1,083
Other comprehensive income (loss) before reclassifications	(75)		(629)
Reclassifications	(340)		(719)
Ending Balance	$ (265)		$ (265)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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