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Note 8 - Capital Stock and Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Share-based compensation | $ 1,139 | $ 1,004 | $ 3,401 | $ 3,136
Continuing Operations [Member] | Cost of Sales [Member] |  |  |  |
Share-based compensation | 0 | 32 | 88 | 83
Continuing Operations [Member] | Selling and Marketing Expense [Member] |  |  |  |
Share-based compensation | 147 | 149 | 493 | 373
Continuing Operations [Member] | General and Administrative Expense [Member] |  |  |  |
Share-based compensation | 919 | 790 | 2,633 | 2,593
Continuing Operations [Member] | Research and Development Expense [Member] |  |  |  |
Share-based compensation | $ 73 | $ 33 | $ 187 | $ 87

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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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