LIQUIDITY AND CAPITAL RESOURCES (Details Textual) - USD ($)	Jan. 31, 2017	Apr. 30, 2016	Jan. 31, 2016	Apr. 30, 2015
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Working Capital Surplus	$ 2,105,000
Cash and Cash Equivalents, at Carrying Value, Total	$ 2,340,707	$ 2,235,597	$ 2,408,297	$ 2,364,360