Note 7 - Related Party Transactions - Non-voting Revenues Interest and Non-voting Profits Interests (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Value Line’s non-voting revenues interest | $ 3,357 | $ 4,488 |
| Non-voting profits interest in EAM | 522 | 633 |
| Revenues and Profits Distribution from Unconsolidated Entity | $ 3,879 | $ 5,121 |