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

Represents the income received against non voting revenues in unconsolidated entity.

No definition available.

Name:	valu_NonVotingRevenuesInterestInUnconsolidatedEntity
Namespace Prefix:	valu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration