Note 17 - Stockholders' Equity - Components of Employee Stock-based Compensation (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Stock-based compensation expense | $ 15,869 | $ 7,794 | $ 4,652 |
| Share-Based Payment Arrangement, Option [Member] | |||
| Stock-based compensation expense | 17 | 8 | 40 |
| Restricted Stock [Member] | |||
| Stock-based compensation expense | 15,794 | 7,732 | 4,563 |
| Awards by Employee Stock Purchase Plan [Member] | |||
| Stock-based compensation expense | $ 57 | $ 54 | $ 49 |