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Note 5 - Variable Interest Entity - Total Assets, the Maximum Exposure to Loss, and Value of the Assets and Liabilities in EAM (Details) - USD ($)
$ in Thousands
Apr. 30, 2025
Apr. 30, 2024
As of April 30, 2023 $ 144,533 $ 136,035
As of April 30, 2023 44,855 45,242
EAM Trust [Member]    
As of April 30, 2023 63,699 63,076
As of April 30, 2023 [1] 6,373 5,881
EAM Trust [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]    
As of April 30, 2023 [2] 60,807 60,134
As of April 30, 2023 0 0
As of April 30, 2023 $ 60,807 $ 60,134
[1] (1) At April 30, 2025 and 2024, EAM's total liabilities included a payable to VLI for its accrued non-voting revenues and non-voting profits interests of $4,493,000 and $3,865,000, respectively.
[2] Reported within Long-Term Assets on Consolidated Balance Sheets.