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Note 9 - Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, |  |  | September 30, |
|  | 2020 |  |  | 2020 |
Developed technology |  | $ | 3,297 |  |  | $ | 655 |
Customer relationships |  |  | 990 |  |  |  | 627 |
Trade name portfolio |  |  | 238 |  |  |  | 228 |
Non-compete agreements |  |  | 258 |  |  |  | 247 |
Patents |  |  | 72 |  |  |  | 72 |
|  |  | 4,855 |  |  |  | 1,829 |
Accumulated amortization |  |  | (1,112 | ) |  |  | (886 | )
|  | $ | 3,743 |  |  | $ | 943 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Fiscal year ending September 30, |  |  |  |
2021 (remaining nine months) |  | $ | 501 |
2022 |  |  | 664 |
2023 |  |  | 630 |
2024 |  |  | 615 |
2025 |  |  | 480 |
Thereafter |  |  | 853 |
Total estimated amortization expense |  | $ | 3,743 |

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