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Stock-Based Benefit Plans (Details Textual)
$ in Thousands
12 Months Ended
Oct. 31, 2017
USD ($)
shares
Oct. 31, 2016
USD ($)
shares
Oct. 31, 2015
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unamortized value of stock compensation   $ 27,000 $ 25,200
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares 5,800,000 6,771,000 7,541,000
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]      
Unamortized value of stock compensation $ 10,600    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 5 years 3 months 20 days    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 2 months 13 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 4 years 2 months 13 days    
Stock Compensation Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unamortized value of stock compensation $ 24,200    
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    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 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    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 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 Service [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unamortized value of stock compensation $ 6,783 $ 2,956 $ 2,542
Vesting based on total shareholder return [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unamortized value of stock compensation $ 2,200 $ 3,800  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Maximum [Member] | Vesting Based On Service [Member] | Restricted Stock Units (RSUs) [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    
Minimum [Member] | Vesting Based On Service [Member] | Restricted Stock Units (RSUs) [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