INCOME TAXES (Details Textual) - USD ($)	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2013
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	34.00%
Valuation Allowances and Reserves, Balance	$ 16,697,395	$ 13,438,654	$ 12,024,836
Valuation Allowances and Reserves, Period Increase (Decrease)	3,259,000
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	30,900,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 34,400,000