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Organization and Summary of Significant Accounting Policies (Detail Textuals) (USD $) In Thousands, unless otherwise specified |  |  | 6 Months Ended
--- | --- | --- | ---
Oct. 31, 2014 | Apr. 30, 2014 | Oct. 31, 2014 EAM Trust | Oct. 31, 2014 EAM Trust Minimum | Oct. 31, 2014 EAM Trust Maximum
Organization, Consolidation and Presentation Of Financial Statements [Abstract] |  |  |  |  |
Cash equivalents | $ 4,857 | $ 5,482 |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment management fee revenues from its mutual fund and separate accounts business |  |  |  | 41.00% | 55.00%
Non-voting profits interest ("Profits Interest") |  |  | 50.00% |  |
Percentage of non voting profits interests due each quarter from EAM |  |  |  | 90.00% |

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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- Details
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- Definition Represents percentage of non-voting profits interest. + References No definition available. + Details
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- Definition Represents percentage of non-voting revenues interest based on the amount of EAM's adjusted gross revenues, excluding ES's distribution revenues. + References No definition available. + Details
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- Definition Represents the stated percentage of non voting profits interests due from ex-subsidiary payable to parent under agreement. + References No definition available. + Details
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