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Note 10 - Acquisitions (Tables) | 6 Months Ended
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May 31, 2013
Mergers, Acquisitions and Dispositions Disclosures [Text Block] |
Inventories |  | $ | 947,760 |
Equipment, tools and dies |  |  | 364,053 |
Goodwill and intangible assets |  |  | 618,729 |
Land and Building |  |  | 1,136,000 |
Total |  | $ | 3,066,542 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | May 31, 2013 |  |  | May 31, 2012 |  |  | May 31, 2013 |  |  | May 31, 2012 |
Net Sales from Continuing Operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As Reported |  | $ | 9,250,308 |  |  | $ | 11,685,169 |  |  | $ | 17,665,413 |  |  | $ | 17,997,383 |
Pro Forma |  | $ | 9,250,308 |  |  | $ | 12,965,205 |  |  | $ | 17,665,413 |  |  | $ | 20,182,051 |
Net Income from Continuing Operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As Reported |  | $ | 514,240 |  |  | $ | 935,981 |  |  | $ | 1,333,500 |  |  | $ | 1,129,479 |
Pro Forma |  | $ | 514,240 |  |  | $ | 1,388,142 |  |  | $ | 1,333,500 |  |  | $ | 1,610,990 |
Basic Net income per Share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As Reported |  | $ | 0.13 |  |  | $ | 0.23 |  |  | $ | 0.33 |  |  | $ | 0.28 |
Pro Forma |  | $ | 0.13 |  |  | $ | 0.34 |  |  | $ | 0.33 |  |  | $ | 0.40 |
Diluted Net income per Share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As Reported |  | $ | 0.13 |  |  | $ | 0.23 |  |  | $ | 0.33 |  |  | $ | 0.28 |
Pro Forma |  | $ | 0.13 |  |  | $ | 0.34 |  |  | $ | 0.33 |  |  | $ | 0.40 |
Weighted average outstanding shares used to compute basic net income per share |  |  | 4,037,552 |  |  |  | 4,031,439 |  |  |  | 4,036,302 |  |  |  | 4,029,825 |
Weighted average outstanding shares used to compute diluted net income per share |  |  | 4,051,692 |  |  |  | 4,047,787 |  |  |  | 4,049,480 |  |  |  | 4,047,346 |

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