Supplementary Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Oct. 31, 2013	Oct. 31, 2012
Supplemental Cash Flow Elements [Abstract]
State and local income tax payments	$ (46)	$ (19)
Federal income tax payments to the Parent	$ (354)	$ (230)

Amount represents Federal income tax payments to the Parent.

No definition available.

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