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Note 18 - Major Customers (Tables) | 6 Months Ended
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Mar. 31, 2019
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, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Americas |  | $ | 9,048,167 |  |  | $ | 5,051,072 |  |  | $ | 17,769,488 |  |  | $ | 11,104,110 |
Asia Pacific |  |  | 506,968 |  |  |  | 2,255,856 |  |  |  | 1,146,024 |  |  |  | 3,277,762 |
Europe, Middle East and Africa |  |  | 636,556 |  |  |  | 561,520 |  |  |  | 1,453,738 |  |  |  | 1,115,143 |
Total Revenues |  | $ | 10,191,691 |  |  | $ | 7,868,448 |  |  | $ | 20,369,250 |  |  | $ | 15,497,015 |

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