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Stock-Based Benefit Plans (Details Textual)
$ in Thousands
12 Months Ended
Oct. 31, 2015
USD ($)
shares
Oct. 31, 2014
USD ($)
shares
Oct. 31, 2013
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 22,903 $ 21,656 $ 19,041
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares 7,541,000 8,821,000 4,397,000
Unamortized value of stock compensation $ 25,200 $ 24,000 $ 19,900
Active plans [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock incentive plans 2    
Active plans [Member] | Employees including officers [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock incentive plans 1    
Active plans [Member] | Nonemployee directors [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock incentive plans 1    
Inactive Plans [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock incentive plans 2    
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense $ 9,610 9,005 7,703
Unamortized value of stock compensation $ 13,800    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 5 months    
Inactive Plans [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years    
Term of Stock Option Granted under Stock Incentive Plan 10 years    
Inactive Plans [Member] | Stock Option Non Employee Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 2 years    
Active plans [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years    
Term of Stock Option Granted under Stock Incentive Plan 10 years    
Active plans [Member] | Stock Option Non Employee Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 2 years    
Vesting Based On Stock Price [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated Share-based Compensation Expense   $ 231 $ 1,811