FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Oct. 31, 2018
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in accrued contingent consideration	$ 1,862
Change in value of contingent consideration	1,862	$ (3,195)
Liabilities [Abstract]
Total liabilities	22,462		$ 20,875
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening balance, Liabilities	20,875
Change in value of contingent consideration	(350)
Ending balance, Liabilities	22,462
Liabilities [Abstract]
Accrued Liabilities, Current	7,489
Other Liabilities, Noncurrent	14,973
Total liabilities	22,462		$ 20,875
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	$ 75