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Variable Interest Entity (Detail textuals)	3 Months Ended
	Jul. 31, 2015
EAM Trust
Variable Interest Entity [Line Items]
Non-voting profits interest in EAM	50.00%

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents percentage of non-voting profits interest.

+ References

No definition available.

+ Details

Name:	valu_NonVotingProfitsInterestPercent
Namespace Prefix:	valu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=valu_EulavAssetManagementLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: