XML 41 R30.htm IDEA: XBRL DOCUMENT
v3.20.2

Note 7 - Related Party Transactions (Tables) | 6 Months Ended
--- | ---
Oct. 31, 2020
Notes Tables |
Schedule of Non Voting Revenues Interest and Non Voting Profits Interests [Table Text Block] |
|  | Three Months Ended October 31, |  |  | Six Months Ended October 31, |
($ in thousands) |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Non-voting revenues interest in EAM |  | $ | 3,729 |  |  | $ | 2,768 |  |  | $ | 7,009 |  |  | $ | 5,356 |
Non-voting profits interest in EAM |  |  | 485 |  |  |  | 290 |  |  |  | 849 |  |  |  | 573 |
|  | $ | 4,214 |  |  | $ | 3,058 |  |  | $ | 7,858 |  |  | $ | 5,929 |

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

X
- Definition Schedule of non voting revenues interest and non voting profits interests. + References No definition available. + Details
Name: | valu_ScheduleOfNonVotingRevenuesInterestAndNonVotingProfitsInterestsTableTextBlock
Namespace Prefix: | valu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration