FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Oct. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in value of contingent consideration	$ 1,227	$ 2,635
Liabilities [Abstract]
Total liabilities	14,041		$ 18,881
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Opening balance, Liabilities	18,881
Change in value of contingent consideration	(7,039)
Increase in accrued contingent consideration	1,227
Ending balance, Liabilities	14,041
Liabilities [Abstract]
Accrued Liabilities, Current	7,014
Other Liabilities, Noncurrent	7,027
Total liabilities	14,041		$ 18,881
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	$ 972