FAIR VALUE MEASUREMENTS, Assets and Liabilities, Measured at Fair Value Using Unobservable Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Payment of contingent consideration	$ 515	$ 2,630
Liabilities, Ending Balance	41,974
Fair Value, Inputs, Level 3 [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Liabilities, Opening Balance	18,326	20,875
Contingent consideration related to acquisition	23,719	2,107
Increase in accrued contingent consideration, net	515	2,630
Payment of contingent consideration	(500)	(7,178)
Liabilities, Ending Balance		18,326
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Gain (Loss) [Member]
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Change in Unrealized Gain (Loss)	$ (86)	$ (108)