FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Oct. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in accrued contingent consideration	$ (3,195)
Change in value of contingent consideration	(3,195)	$ 537
Liabilities [Abstract]
Total liabilities	24,931		$ 27,573
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening balance, Liabilities	27,573
Change in value of contingent consideration	(300)
Ending balance, Liabilities	24,931
Liabilities [Abstract]
Accrued Liabilities, Current	7,262
Other Liabilities, Noncurrent	17,669
Total liabilities	24,931		$ 27,573
Foreign Currency Gain (Loss) [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Foreign currency transaction adjustments	$ 853