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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, 2021
Apr. 30, 2020
Assets $ 121,136 $ 109,728
Liabilities 54,123 56,189
EAM Trust [Member]    
Assets 64,197 61,335
Liabilities [1] 6,870 4,192
EAM Trust [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]    
Assets [2] 60,977 59,165
Liabilities
Value Line Maximum Exposure to Loss $ 60,977 $ 59,165
[1] At April 30, 2021 and 2020, EAM's total liabilities included a payable to VLI for its accrued non-voting revenues and non-voting profits interests of $4,664,000 and $2,949,000, respectively.
[2] Reported within Long-Term Assets on Consolidated Balance Sheets.