XML 36 R24.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 16 - Concentration of Credit Risk | 3 Months Ended
--- | ---
Jul. 31, 2018
Notes to Financial Statements |
Concentration of Credit Risk [Text Block] |
Note 16 - Concentration of Credit Risk:
Financial instruments that potentially subject the Company to concentration of credit risk consist principally of cash deposits. Accounts at each institution are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000. As of July 31, 2018 and July 31, 2017, the Company had $899,000 and $4,670,000, respectively, in excess of the FDIC insured limit.

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure related to concentration of credit risk primarily related to cash deposits. + References No definition available. + Details
Name: | valu_ConcentrationOfCreditRiskTextBlock
Namespace Prefix: | valu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration