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Note 8 - Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2020
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | September 30, |
|  | 2020 |  |  | 2019 |
Technology |  | $ | 655 |  |  | $ | 611 |
Customer relationships |  |  | 627 |  |  |  | 584 |
Trade name portfolio |  |  | 228 |  |  |  | 213 |
Non-compete agreements |  |  | 247 |  |  |  | 230 |
Patents |  |  | 72 |  |  |  | 72 |
|  |  | 1,829 |  |  |  | 1,710 |
Accumulated amortization |  |  | (886 | ) |  |  | (534 | )
|  | $ | 943 |  |  | $ | 1,176 |
|  | Year ended |
|  | September 30, |
|  | 2020 |  |  | 2019 |
Amortization expense |  | $ | 302 |  |  | $ | 304 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
2021 |  | $ | 257 |
2022 |  |  | 232 |
2023 |  |  | 200 |
2024 |  |  | 186 |
2025 |  |  | 56 |
Thereafter |  |  | 12 |
Total estimated amortization expense |  | $ | 943 |

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