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Note 3 - Related Party Transactions - Non-voting Revenues Interest and Non-voting Profits Interests (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Non-voting revenues interest in EAM | $ 10,397 | $ 15,899 | $ 15,190
Non-voting profits interest in EAM | 734 | 2,142 | 2,131
Revenues and Profits Distribution from Unconsolidated Entity | $ 11,131 | $ 18,041 | $ 17,321

X
- Definition Represents the income received against non voting profits in unconsolidated entity. + References No definition available. + Details
Name: | valu_NonVotingProfitsInterestInUnconsolidatedEntity
Namespace Prefix: | valu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the income received against non voting revenues in unconsolidated entity. + References No definition available. + Details
Name: | valu_NonVotingRevenuesInterestInUnconsolidatedEntity
Namespace Prefix: | valu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the revenues and profits distribution from unconsolidated entity. + References No definition available. + Details
Name: | valu_RevenuesAndProfitsDistributionFromUnconsolidatedEntity
Namespace Prefix: | valu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration