INCOME TAXES (Details 4) - USD ($)	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of the year	$ 13,438,654	$ 12,024,836
Charged (reversed) to costs and expenses	(208,988)	1,413,818
Capital loss from sale of Pride	3,467,729	0
Balance at end of the year	$ 16,697,395	$ 13,438,654