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Note 3 - Net Income Per Share of Common Stock (Tables) | 9 Months Ended
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Aug. 31, 2013
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | For the three months ended |
|  | August 31, 2013 |  |  | August 31, 2012 |
Basic: |  |  |  |  |  |  |  |
Numerator: net income |  | $ | 26,394 |  |  | $ | 979,451 |
Denominator: average number of common shares outstanding |  |  | 4,041,682 |  |  |  | 4,035,852 |
Basic earnings per common share |  | $ | 0.01 |  |  | $ | 0.24 |
Diluted: |  |  |  |  |  |  |  |
Numerator: net income |  | $ | 26,394 |  |  | $ | 979,451 |
Average number of common shares outstanding |  |  | 4,041,682 |  |  |  | 4,035,852 |
Effect of dilutive stock options |  |  | 16,091 |  |  |  | 16,394 |
Denominator: dilutive average number of common shares outstanding |  |  | 4,057,773 |  |  |  | 4,052,246 |
Diluted earnings per common share |  | $ | 0.01 |  |  | $ | 0.24 |
|  | For the nine months ended |
|  | August 31, 2013 |  |  | August 31, 2012 |
Basic: |  |  |  |  |  |  |  |
Numerator: net income |  | $ | 1,359,894 |  |  | $ | 2,108,929 |
Denominator: average number of common shares outstanding |  |  | 4,038,118 |  |  |  | 4,031,828 |
Basic earnings per common share |  | $ | 0.34 |  |  | $ | 0.52 |
Diluted: |  |  |  |  |  |  |  |
Numerator: net income |  | $ | 1,359,894 |  |  | $ | 2,108,929 |
Average number of common shares outstanding |  |  | 4,038,118 |  |  |  | 4,031,828 |
Effect of dilutive stock options |  |  | 12,701 |  |  |  | 17,408 |
Denominator: dilutive average number of common shares outstanding |  |  | 4,050,819 |  |  |  | 4,049,236 |
Diluted earnings per common share |  | $ | 0.34 |  |  | $ | 0.52 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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