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Note 8 - Accrued Expenses (Tables) | 12 Months Ended
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Nov. 30, 2018
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | November 30, 2018 |  |  | November 30, 2017 |
Salaries, wages, and commissions |  | $ | 448,737 |  |  | $ | 584,768 |
Accrued warranty expense |  |  | 96,786 |  |  |  | 68,451 |
Other |  |  | 347,761 |  |  |  | 328,339 |
|  | $ | 893,284 |  |  | $ | 981,558 |

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