FAIR VALUE MEASUREMENTS (Contingent Consideration Liability) (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2016	Oct. 31, 2015
Liabilities [Abstract]
Total liabilities	$ 25,219	$ 21,405
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balances as of October 31, 2015, Liabilities	21,405
Business Combination, Consideration Transferred, Liabilities Incurred	1,225
Increase in accrued contingent consideration	1,679
Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)	910
Balances as of April 30, 2016, Liabilities	25,219
Liabilities [Abstract]
Accrued Liabilities, Current	7,236
Other Liabilities, Noncurrent	17,983
Total liabilities	$ 25,219	$ 21,405