3. COMMITMENTS AND CONTINGENCIES (Details Narrative)	12 Months Ended
Apr. 30, 2016 USD ($) ft²	Apr. 30, 2015 USD ($)	Apr. 30, 2014 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Square footage leased \| ft²	152,000
Annual rent expense \| $	$ 1,265,000	$ 1,197,000	$ 938,000

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration