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Note 19 - Major Customers, Suppliers and Related Information (Tables) | 6 Months Ended
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Mar. 31, 2020
Notes Tables |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three months ended March 31, |  |  |  | Six months ended March 31, |
|  | 2020 |  |  | 2019 |  |  |  | 2020 |  |  | 2019 |
Americas |  | $ | 7,046,654 |  |  | $ | 9,048,167 |  |  |  | $ | 13,850,474 |  |  | $ | 17,769,488 |
Asia Pacific |  |  | 656,353 |  |  |  | 506,968 |  |  |  |  | 2,204,124 |  |  |  | 1,146,024 |
Europe, Middle East and Africa |  |  | 573,766 |  |  |  | 636,556 |  |  |  |  | 1,003,877 |  |  |  | 1,453,738 |
Total Revenues |  | $ | 8,276,773 |  |  | $ | 10,191,691 |  |  |  | $ | 17,058,475 |  |  | $ | 20,369,250 |

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