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Note 18 - Major Customers, Suppliers and Related Information (Tables) | 12 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Years ended September 30, |
|  | 2019 |  |  | 2018 |
Americas |  | $ | 27,981,225 |  |  | $ | 16,488,624 |
Europe, Middle East, and Africa |  |  | 2,420,106 |  |  |  | 3,238,533 |
Asia Pacific |  |  | 6,577,724 |  |  |  | 6,579,633 |
|  | $ | 36,979,055 |  |  | $ | 26,306,790 |

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