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Note 15 - Share-based Compensation - Share-based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Total share-based compensation expense | $ 3,235 | $ 2,627 | $ 8,587 | $ 7,243
Cost of Sales [Member] |  |  |  |
Total share-based compensation expense | 123 | 121 | 393 | 371
Research and Development Expense [Member] |  |  |  |
Total share-based compensation expense | 358 | 343 | 1,135 | 1,019
Selling and Marketing Expense [Member] |  |  |  |
Total share-based compensation expense | 300 | 231 | 786 | 643
General and Administrative Expense [Member] |  |  |  |
Total share-based compensation expense | $ 2,454 | $ 1,932 | $ 6,273 | $ 5,210

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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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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