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Note 5 - Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Stock-based compensation: |  |  |  |  |  |  |  |
Cost of revenue |  | $ | 137 |  |  | $ | 253 |
Sales and marketing |  |  | 355 |  |  |  | 712 |
Research, development and engineering |  |  | 407 |  |  |  | 618 |
General and administrative |  |  | 361 |  |  |  | 1,248 |
Stock-based compensation expense |  |  | 1,260 |  |  |  | 2,831 |
Capitalized to software and patent costs |  |  | 5 |  |  |  | 17 |
Total stock-based compensation |  | $ | 1,265 |  |  | $ | 2,848 |
Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] |
|  | March 31, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Total unrecognized compensation costs |  | $ | 9,937 |  |  | $ | 16,226 |
Employee Service Share Based Compensation Non Vested Awards Compensation Cost Not Yet Recognized Period for Recognition [Table Text Block] |
|  | RSAs |  |  | RSUs |  |  | PRSUs |
Weighted average period (in years) |  |  | 0.88 |  |  |  | 1.24 |  |  |  | 1.42 |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant Date |
|  | Shares |  |  | Fair Value |
Unvested balance, December 31, 2024 |  |  | 59 |  |  | $ | 29.89 |
Granted |  |  | — |  |  | $ | — |
Vested |  |  | (9 | ) |  | $ | 42.42 |
Forfeited |  |  | — |  |  | $ | — |
Unvested balance, March 31, 2025 |  |  | 50 |  |  | $ | 27.85 |
Schedule of Fair Value of Restricted Stock Awards Vested [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Fair value of RSAs vested |  | $ | 301 |  |  | $ | 551 |
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant Date |
|  | Units |  |  | Fair Value |
Unvested balance, December 31, 2024 |  |  | 406 |  |  | $ | 28.27 |
Granted |  |  | 11 |  |  | $ | 35.29 |
Vested |  |  | (49 | ) |  | $ | 27.49 |
Forfeited |  |  | (117 | ) |  | $ | 26.28 |
Unvested balance, March 31, 2025 |  |  | 251 |  |  | $ | 25.76 |
Schedule of Fair Value of Restricted Stock Units Vested [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Fair value of RSU awards vested |  | $ | 1,726 |  |  | $ | 1,729 |
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant Date |
|  | Units |  |  | Fair Value |
Unvested balance, December 31, 2024 |  |  | 215 |  |  | $ | 32.08 |
Change in units based on performance expectations |  |  | (5 | ) |  | $ | 42.43 |
Granted |  |  | — |  |  | $ | — |
Vested |  |  | (49 | ) |  | $ | 42.43 |
Forfeited |  |  | — |  |  | $ | — |
Unvested balance, March 31, 2025 |  |  | 161 |  |  | $ | 28.60 |
Schedule of Fair Value of Performance Stock Units Vested [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Fair value of PRSU awards vested |  | $ | 1,707 |  |  | $ | 2,370 |
Performance Shares [Member] |
Notes Tables |
Schedule of Share-Based Payment Award, Valuation Assumptions [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2025 |  |  | 2024 |
Stock price |  | $ | — |  |  | $ | 39.49 |
Expected volatility |  |  | — | % |  |  | 66.3 | %
Risk-free interest rate |  |  | — | % |  |  | 4.3 | %

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