Supplementary Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Jan. 31, 2013	Jan. 31, 2012
Supplemental Cash Flow Elements [Abstract]
State and local income tax payments	$ (20)	$ (84)
Federal income tax payments to the Parent	$ (1,030)	$ (245)

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