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Earnings per share (Tables) | 6 Months Ended
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Apr. 30, 2015
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 April 30, |  | Six Months Ended April 30, |
|  | 2015 |  | 2014 |  | 2015 |  | 2014 |
Weighted average shares outstanding for basic earnings per share |  |  | 8,509,970 |  |  | 8,208,278 |  |  | 8,395,952 |  |  | 8,175,376 |
Add effects of potentially dilutive securities-assumed exercise of stock options |  |  | 373,212 |  |  | 538,080 |  |  | 377,715 |  |  | 614,376 |
Weighted average shares outstanding for diluted earnings per share |  |  | 8,883,182 |  |  | 8,746,358 |  |  | 8,773,667 |  |  | 8,789,752 |

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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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