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Stock-Based Compensation - Exercise Price of Outstanding Stock Options (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Oct. 31, 2012
Price Range One [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted-Average Remaining Contractual Life 10 months 24 days
Number Outstanding 78
Lower range of exercise price $ 5
Upper range of exercise price $ 15
Price Range Two [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted-Average Remaining Contractual Life 2 years
Number Outstanding 91
Lower range of exercise price $ 15
Upper range of exercise price $ 25
Price Range Three [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Weighted-Average Remaining Contractual Life 2 years 3 months 18 days
Number Outstanding 12
Lower range of exercise price $ 25
Upper range of exercise price $ 35