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Stock Repurchase Program and Cash Dividend (Details Textual 1) - $ / shares
3 Months Ended 6 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2017
Stock Repurchase Program and Cash Dividend [Abstract]        
Common Stock, Dividends, Per Share, Declared and Paid $ 0.11 $ 0.08 $ 0.19 $ 0.08