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Lease Commitments (Detail Textuals) (USD $) | 0 Months Ended | 12 Months Ended | 167 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 04, 1993 | Apr. 30, 2013 | Apr. 30, 2012 | Apr. 30, 2011 | Apr. 30, 2007 | Apr. 30, 2011 General and Administrative Expense | Feb. 07, 2013 Company and Citibank, N.A. (the "Sublandlord") sqft
Operating Leased Assets [Line Items] |  |  |  |  |  |  |
Term of lease | 15 years |  |  |  |  |  |
Extended term of lease |  |  |  |  | 5 years |  |
Area of land for lease |  |  |  |  |  |  | 44,493
Base rent under the sublease agreement per annum |  |  |  |  |  |  | $ 1,468,269
Security deposit in cash |  |  |  |  |  |  | 489,423
Rental expenses |  | 2,509,000 | 2,509,000 | 3,862,000 |  |  |
Operating lease exit cost related to relocation |  | $ 37,000 | $ 475,000 |  |  | $ 914,000 |

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents area of land for lease. + References No definition available. + Details
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Namespace Prefix: | valu_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents base rent per annum under the sublease agreement. + References No definition available. + Details
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Namespace Prefix: | valu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents extended term of lease. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Represents the operating lease exit cost related to relocation. + References No definition available. + Details
Name: | valu_OperatingLeaseExitCostRelatedToRelocation
Namespace Prefix: | valu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Represents term of lease. + References No definition available. + Details
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Namespace Prefix: | valu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration