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Note 9 - Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Sep. 30, 2020
--- | --- | ---
Intangible assets, gross carrying amount | $ 4,855 | $ 1,829
Accumulated amortization | (1,112) | (886)
Intangible assets, net | 3,743 | 943
Developed Technology Rights [Member] |  |
Intangible assets, gross carrying amount | 3,297 | 655
Customer Relationships [Member] |  |
Intangible assets, gross carrying amount | 990 | 627
Trade Names [Member] |  |
Intangible assets, gross carrying amount | 238 | 228
Noncompete Agreements [Member] |  |
Intangible assets, gross carrying amount | 258 | 247
Patents [Member] |  |
Intangible assets, gross carrying amount | $ 72 | $ 72

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