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Stock Repurchase Program and Cash Dividend (Details Textual) - $ / shares
shares in Thousands
3 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Oct. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Treasury Stock, Shares, Acquired 785 4,427  
Treasury Stock Acquired, Average Cost Per Share $ 32.02 $ 47.43  
Dec 2017 Repurchase Program [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock Repurchase Program, Number of Shares Authorized to be Repurchased     20,000
December 2018 Repurchase Program [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock Repurchase Program, Number of Shares Authorized to be Repurchased 20,000