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Note 5 - Stock-Based Compensation - Allocation of Stock-Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Stock-based compensation expense | $ 2,702 | $ 2,692 | $ 7,939 | $ 8,146
Stock-based compensation capitalized to software and patent costs | 5 | 15 | 25 | 42
Total stock-based compensation | 2,707 | 2,707 | 7,964 | 8,188
Cost of Sales [Member] |  |  |  |
Stock-based compensation expense | 154 | 310 | 563 | 866
Selling and Marketing Expense [Member] |  |  |  |
Stock-based compensation expense | 688 | 606 | 2,198 | 1,930
Research and Development Expense [Member] |  |  |  |
Stock-based compensation expense | 648 | 658 | 1,911 | 2,269
General and Administrative Expense [Member] |  |  |  |
Stock-based compensation expense | $ 1,212 | $ 1,118 | $ 3,267 | $ 3,081

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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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