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Note 18 - Major Customers (Tables) | 9 Months Ended
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Jun. 30, 2019
Notes Tables |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three months ended June 30, |  |  | Nine months ended June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Americas |  | $ | 5,661,496 |  |  | $ | 3,814,782 |  |  | $ | 23,430,521 |  |  | $ | 14,918,891 |
Asia Pacific |  |  | 2,681,229 |  |  |  | 3,089,770 |  |  |  | 3,827,716 |  |  |  | 6,367,532 |
Europe, Middle East and Africa |  |  | 521,001 |  |  |  | 609,516 |  |  |  | 1,974,739 |  |  |  | 1,724,659 |
Total Revenues |  | $ | 8,863,726 |  |  | $ | 7,514,068 |  |  | $ | 29,232,976 |  |  | $ | 23,011,082 |

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