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Note 3 - Related Party Transactions (Tables)
12 Months Ended
Apr. 30, 2025
Notes Tables  
Schedule of Non Voting Revenues Interest and Non Voting Profits Interests [Table Text Block]
     

Fiscal Years Ended April 30,

 

($ in thousands)

 

2025

   

2024

   

2023

 

Non-voting revenues interest in EAM

  $ 16,183     $ 11,900     $ 10,397  

Non-voting profits interest in EAM

    2,135       1,382       734  
    $ 18,318     $ 13,282     $ 11,131