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Note 3 - Related Party Transactions (Tables) | 12 Months Ended
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Apr. 30, 2023
Notes Tables |
Schedule of Non Voting Revenues Interest and Non Voting Profits Interests [Table Text Block] |
|  | Fiscal Years Ended April 30, |
($ in thousands) |  | 2023 |  |  | 2022 |  |  | 2021 |
Non-voting revenues interest in EAM |  | $ | 10,397 |  |  | $ | 15,899 |  |  | $ | 15,190 |
Non-voting profits interest in EAM |  |  | 734 |  |  |  | 2,142 |  |  |  | 2,131 |
|  | $ | 11,131 |  |  | $ | 18,041 |  |  | $ | 17,321 |

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