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.

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Organization and Summary of Significant Accounting Policies (Detail Textuals) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jul. 31, 2014 EAM Trust	Jul. 31, 2014 EAM Trust Minimum	Jul. 31, 2014 EAM Trust Maximum
Organization, Consolidation and Presentation Of Financial Statements [Abstract]
Cash equivalents	$ 6,466	$ 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%