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2. Basis of Presentation and Significant Accounting Policies: Net Income Per Share Information: Schedule of Earnings per share basic and diluted (Details) - shares
3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Details        
Weighted average number of common shares outstanding - basic 7,692,913 7,677,755 7,691,534 7,669,078
Effect of dilutive stock options   41,187   42,026
Weighted average number of common shares outstanding - diluted 7,692,913 7,718,942 7,691,534 7,711,104
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,341,500 1,004,000 1,341,500 986,500