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Investments - Equity Method Investment (Detail Textuals 1) (USD $)	9 Months Ended
	Jan. 31, 2015		Apr. 30, 2014
Schedule of Equity Method Investments [Line Items]
Investment in EAM Trust	$ 58,066,000us-gaap_EquityMethodInvestments		$ 57,850,000us-gaap_EquityMethodInvestments
EAM Trust
Schedule of Equity Method Investments [Line Items]
Investment in EAM Trust	58,066,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember	[1]	57,850,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember	[1]
Fair value of contributed capital at inception	55,805,000valu_FairValueOfContributedCapitalAtInception / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember		55,805,000valu_FairValueOfContributedCapitalAtInception / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember
Cash and liquid securities in excess of working capital requirements contributed to capital account	5,820,000valu_CashAndLiquidSecuritiesInExcessOfWorkingCapitalRequirementsContributedToCapitalAccount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember		5,820,000valu_CashAndLiquidSecuritiesInExcessOfWorkingCapitalRequirementsContributedToCapitalAccount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember
Non-voting profits interest ("Profits Interest")	50.00%valu_PercentageOfNonVotingProfitInterest / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember
Payable to VLI for its accrued non-voting revenues and non-voting profits interests	$ 2,008,000valu_AccruedNonVotingRevenuesAndNonVotingProfitsInterestsPayable / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember		$ 1,887,000valu_AccruedNonVotingRevenuesAndNonVotingProfitsInterestsPayable / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = valu_EulavAssetManagementLlcMember
[1] Reported within Long Term Assets on the Consolidated Condensed Balance Sheets.

X

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ 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 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570

+ Details

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- Definition

Sum of the carrying values as of the balance sheet date of accrued payable non-voting revenues and non-voting profits interests.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Represents the cash and liquid securities in excess of working capital requirements contributed to capital account.

+ References

No definition available.

+ Details

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Namespace Prefix:	valu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the fair value of contributed capital at inception.

+ References

No definition available.

+ Details

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Namespace Prefix:	valu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

- Definition

Represents percentage of non-voting profits interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	valu_
Data Type:	num:percentItemType
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