Variable Interest Entity (Detail textuals)	3 Months Ended
Jul. 31, 2012
Variable Interest Entity [Abstract]
Non-voting profits interest in EAM	50.00%

Percentage of equity (net assets) in a variable interest entity (VIE) not attributable, directly or indirectly, to the parent entity. That is, percentage of equity in a VIE that is attributable to the noncontrolling interest (previously referred to as minority interest).

No definition available.

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