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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Total share-based compensation expense | $ 863 | $ 1,201 | $ 1,851 | $ 2,432
Share-based compensation capitalized in intangible assets | 24 | 30 | 51 | 71
Total share-based compensation | 887 | 1,231 | 1,902 | 2,503
Selling and Marketing Expense [Member] |  |  |  |
Total share-based compensation expense | 143 | 209 | 313 | 372
Research and Development Expense [Member] |  |  |  |
Total share-based compensation expense | 98 | 233 | 258 | 501
General and Administrative Expense [Member] |  |  |  |
Total share-based compensation expense | $ 622 | $ 759 | $ 1,280 | $ 1,559

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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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