Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Details Textual)

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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