ACQUISITIONS (Total Consideration) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018
Business Acquisition [Line Items]
Cash paid, net	$ 235,174	$ 40,599
FY2019 Acquisition [Member]
Business Acquisition [Line Items]
Cash paid	236,427
Less: cash acquired	(1,253)
Cash paid, net	235,174
Contingent consideration	2,107
Fair value of existing equity interest	1,416
Additional purchase consideration	(335)
Total consideration	$ 238,362