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Note 8 - Share-based Compensation - Share-based Compensation Expenses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Total share-based compensation expense | $ 936 | $ 863 | $ 2,057 | $ 1,851
Share-based compensation capitalized in intangible assets | 24 | 24 | 51 | 51
Total share-based compensation | 960 | 887 | 2,108 | 1,902
Selling and Marketing Expense [Member] |  |  |  |
Total share-based compensation expense | 129 | 143 | 296 | 313
Research and Development Expense [Member] |  |  |  |
Total share-based compensation expense | 136 | 98 | 327 | 258
General and Administrative Expense [Member] |  |  |  |
Total share-based compensation expense | $ 671 | $ 622 | $ 1,434 | $ 1,280

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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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