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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, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Stock-based compensation expense | $ 3,865 | $ 2,702 | $ 8,896 | $ 7,939
Stock-based compensation capitalized to software and patent costs | 61 | 5 | 115 | 25
Total stock-based compensation | 3,926 | 2,707 | 9,011 | 7,964
Cost of Sales [Member] |  |  |  |
Stock-based compensation expense | 336 | 154 | 726 | 563
Selling and Marketing Expense [Member] |  |  |  |
Stock-based compensation expense | 577 | 688 | 1,727 | 2,198
Research and Development Expense [Member] |  |  |  |
Stock-based compensation expense | 1,244 | 648 | 2,872 | 1,911
General and Administrative Expense [Member] |  |  |  |
Stock-based compensation expense | $ 1,708 | $ 1,212 | $ 3,571 | $ 3,267

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