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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 31, 2016
Oct. 31, 2015
Concentration Risk [Line Items]    
Allowance for doubtful accounts $ 3.2 $ 3.0
Accounts Receivable | Customer Concentration Risk    
Concentration Risk [Line Items]    
Concentration risk, percentage 13.20% 10.40%