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Financial Assets and Liabilities - Effects on Changes in Fair Values of Non-Designated Forward Contracts (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jul. 31, 2014
Jul. 31, 2013
Jul. 31, 2014
Jul. 31, 2013
Financial Assets And Liabilities [Abstract]        
Gain (loss) recorded in other income (expense), net $ (53) $ (586) $ (667) $ 3,344