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Note 17 - Stock-based Compensation - Summary of Stock-based Compensation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2023
Share-Based Payment Arrangement, Expense | $ 19,587 | $ 31,067 | $ 36,622
Cost of Sales [Member] |  |  |
Share-Based Payment Arrangement, Expense | 583 | 762 | 232
Research and Development Expense [Member] |  |  |
Share-Based Payment Arrangement, Expense | 4,581 | 6,294 | 8,850
Selling and Marketing Expense [Member] |  |  |
Share-Based Payment Arrangement, Expense | 3,653 | 3,794 | 7,336
General and Administrative Expense [Member] |  |  |
Share-Based Payment Arrangement, Expense | $ 10,770 | $ 20,217 | $ 20,204

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