LIQUIDITY AND CAPITAL RESOURCES (Details Textual) - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Working Capital Surplus	$ 2,061,000
Working Capital Deficiency		$ 1,246,000
Cash and Cash Equivalents, at Carrying Value, Total	2,235,597	2,364,360	$ 2,177,070
Proceeds from Legal Settlements	400,000	$ 1,402,000
Revolving Credit Facility [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Proceeds from Legal Settlements	$ 1,150,000