DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details Textual)	12 Months Ended
Apr. 30, 2017	Apr. 30, 2016
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Percentage Of International Operation	0.00%	60.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration