Note 7 - Related Party Transactions - Non-voting Revenues Interest and Non-voting Profits Interests (Details) - USD ($) $ in Thousands	3 Months Ended
Jul. 31, 2020	Jul. 31, 2019
Value Line’s non-voting revenues interest	$ 3,280	$ 2,588
Non-voting profits interest in EAM	364	283
Revenues and Profits Distribution from Unconsolidated Entity	$ 3,644	$ 2,871

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