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Earnings per share (Tables) | 9 Months Ended
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Jul. 31, 2016
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Weighted Average Shares Outstanding | The following table summarizes the computation of basic and diluted weighted average shares outstanding:
|  | Three Months Ended July 31, |  | Nine Months Ended July 31, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Weighted average shares outstanding for basic earnings per share |  |  | 8,834,747 |  |  | 8,545,300 |  |  | 8,770,375 |  |  | 8,446,223 |
Add effects of potentially dilutive securities-assumed exercise of stock options |  |  | - |  |  | 371,343 |  |  | - |  |  | 374,215 |
Weighted average shares outstanding for diluted earnings per share |  |  | 8,834,747 |  |  | 8,916,643 |  |  | 8,770,375 |  |  | 8,820,438 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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