Note 17 - Stockholders' Equity - Stock-based Compensation Expense by Financial Statement Line Item 2 (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Total stock-based compensation expense | $ 15,869 | $ 7,794 | $ 4,652 |
| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfRevenue | |||
| Total stock-based compensation expense | 1,138 | 536 | 293 |
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | |||
| Total stock-based compensation expense | 2,192 | 1,132 | 627 |
| Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense | |||
| Total stock-based compensation expense | $ 12,539 | $ 6,126 | $ 3,732 |