Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph g

-Article 7

Name:	us-gaap_ShortTermInvestments
Namespace Prefix:	us-gaap_
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			12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 EAM Trust	Apr. 30, 2014 EAM Trust Minimum	Apr. 30, 2014 EAM Trust Maximum
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%
Short term investments (in dollars)	$ 5,482	$ 6,312