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Note 11 - Goodwill and Intangibles - Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Gross carrying amount | $ 12,088 | $ 10,860
Accumulated amortization | 5,689 | 4,768
Net carrying amount | 6,399 | 6,092
Customer Relationships [Member] |  |
Gross carrying amount | 4,837 | 4,894
Accumulated amortization | 1,816 | 1,582
Net carrying amount | 3,021 | 3,312
Certification Marks [Member] |  |
Gross carrying amount | 584 | 584
Accumulated amortization | 367 | 267
Net carrying amount | 217 | 317
Trademarks [Member] |  |
Gross carrying amount | 1,286 | 1,333
Accumulated amortization | 700 | 700
Net carrying amount | 586 | 633
Patents [Member] |  |
Gross carrying amount | 1,172 | 1,119
Accumulated amortization | 205 | 165
Net carrying amount | 967 | 954
Developed Technology Rights [Member] |  |
Gross carrying amount | 293 | 311
Accumulated amortization | 1 | 22
Net carrying amount | 292 | 289
Other Intangible Assets [Member] |  |
Gross carrying amount | 6 | 6
Accumulated amortization | 6 | 6
Net carrying amount | 0 | 0
Computer Software, Intangible Asset [Member] |  |
Gross carrying amount | 3,910 | 2,613
Accumulated amortization | 2,594 | 2,026
Net carrying amount | $ 1,316 | $ 587

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