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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, 2020 | Apr. 30, 2019
--- | --- | ---
Assets |  | $ 109,728 | $ 91,788
Liabilities |  | 56,189 | 44,264
EAM Trust [Member] |  |  |
Assets |  | 61,335 | 60,683
Liabilities | [1] | 4,192 | 3,547
EAM Trust [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] |  |  |
Assets | [2] | 59,165 | 58,625
Liabilities |  |  |
Value Line Maximum Exposure to Loss |  | $ 59,165 | $ 58,625
[1] | At April 30, 2020 and 2019, EAM's total liabilities included a payable to VLI for its accrued non-voting revenues and non-voting profits interests of $2,949,000 and $2,420,000, respectively.
[2] | Reported within Long-Term Assets on Consolidated Balance Sheets.

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