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Note 15 - Share-based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Share-based Payment Arrangement, Expense | $ 355 | $ 446 | $ 1,650 | $ 956
Cost of Sales [Member] |  |  |  |
Share-based Payment Arrangement, Expense | 10 | 10 | 53 | 24
Selling, General and Administrative Expenses [Member] |  |  |  |
Share-based Payment Arrangement, Expense | 327 | 424 | 1,544 | 904
Research and Development Expense [Member] |  |  |  |
Share-based Payment Arrangement, Expense | $ 18 | $ 12 | $ 53 | $ 28

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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