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Note 8 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2018
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | September 30, |
|  | 2018 |  |  | 2017 |
Technology |  | $ | 648,208 |  |  | $ | - |
Customer relationships |  |  | 620,026 |  |  |  | - |
Trade name portfolio |  |  | 225,464 |  |  |  | - |
Non-compete agreements |  |  | 244,252 |  |  |  | - |
Patents |  |  | 72,126 |  |  |  | 108,247 |
|  |  | 1,810,076 |  |  |  | 108,247 |
Accumulated amortization |  |  | (252,730 | ) |  |  | (52,558 | )
|  | $ | 1,557,346 |  |  | $ | 55,689 |
|  | Year Ended September 30, |
|  | 2018 |  |  | 2017 |
Amortization expense |  | $ | 231,901 |  |  | $ | 7,216 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Estimated Amortization Expense for the Years ended September 30, |
2019 |  | $ | 312,493 |
2020 |  |  | 312,493 |
2021 |  |  | 254,819 |
2022 |  |  | 231,075 |
2023 |  |  | 200,400 |
Thereafter |  |  | 246,066 |
Total estimated amortization expense |  | $ | 1,557,346 |

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