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Note 8 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | September 30, |
|  | 2019 |  |  | 2018 |
Technology |  | $ | 611,043 |  |  | $ | 648,208 |
Customer relationships |  |  | 584,477 |  |  |  | 620,026 |
Trade name portfolio |  |  | 212,537 |  |  |  | 225,464 |
Non-compete agreements |  |  | 230,248 |  |  |  | 244,252 |
Patents |  |  | 72,126 |  |  |  | 72,126 |
|  |  | 1,710,431 |  |  |  | 1,810,076 |
Accumulated amortization |  |  | (534,797 | ) |  |  | (252,730 | )
|  | $ | 1,175,634 |  |  | $ | 1,557,346 |
|  | Year Ended September 30, |
|  | 2019 |  |  | 2018 |
Amortization Expense |  | $ | 303,397 |  |  | $ | 231,901 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2020 |  | $ | 294,242 |
2021 |  |  | 239,586 |
2022 |  |  | 217,073 |
2023 |  |  | 186,683 |
2024 |  |  | 173,734 |
Thereafter |  |  | 64,316 |
Total estimated amortization expense |  | $ | 1,175,634 |

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