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Treasury Stock and Repurchase Program (Detail Textuals) (USD $) | 3 Months Ended | 9 Months Ended | 1 Months Ended
--- | --- | --- | ---
Oct. 31, 2014 | Jul. 31, 2014 | Jan. 31, 2015 | Jan. 31, 2014 | Sep. 19, 2012 | Jan. 31, 2011
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of treasury shares | 2,008 us-gaap_TreasuryStockSharesAcquired | 3,053 us-gaap_TreasuryStockSharesAcquired |  |  |  |
Total average cost | $ 29,000 us-gaap_TreasuryStockValueAcquiredCostMethod | $ 42,000 us-gaap_TreasuryStockValueAcquiredCostMethod | $ 71,000 us-gaap_TreasuryStockValueAcquiredCostMethod | $ 509,000 us-gaap_TreasuryStockValueAcquiredCostMethod |  |
September 2012 Share Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Authorized repurchase amount of common stock |  |  |  |  | 3,000,000 us-gaap_StockRepurchaseProgramAuthorizedAmount1 / us-gaap_ShareRepurchaseProgramAxis = valu_September2012ShareRepurchaseProgramMember |
Number of treasury shares |  |  |  |  | 78,452 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = valu_September2012ShareRepurchaseProgramMember |
Total average cost |  |  |  |  | 732,000 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_ShareRepurchaseProgramAxis = valu_September2012ShareRepurchaseProgramMember |
January 2011 Share Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of treasury shares |  |  |  |  |  | 18,400 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = valu_January2011ShareRepurchaseProgramMember
Total average cost |  |  |  |  |  | 354,000 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_ShareRepurchaseProgramAxis = valu_January2011ShareRepurchaseProgramMember
Former Repurchase Program |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Number of treasury shares |  |  |  |  |  | 85,219 us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = valu_FormerRepurchaseProgramMember
Total average cost |  |  |  |  |  | $ 1,036,000 us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_ShareRepurchaseProgramAxis = valu_FormerRepurchaseProgramMember

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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