SHAREHOLDERS' EQUITY (Details 2) - $ / shares	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Class of Stock [Line Items]
Number of Warrants, Common Stock Warrants Outstanding Beginning Balance	171,582	103,400
Number of Warrants, BTX Warrants issued in connection with the BTX Purchase Agreement		68,182
Number of Warrants, Warrants exchanged in connection with the Amendment	(156,072)
Number of Warrants, Common Stock Warrants Outstanding Ending Balance	15,510	171,582
Weighted Average Exercise Price, Common Stock Warrants Outstanding Beginning Balance	$ 72.27	$ 47.39
Weighted Average Exercise Price, BTX Warrants issued in connection with the BTX Purchase Agreement		110.00
Weighted Average Exercise Price, Exchange Warrants issued in connection with the Amendment	47.39
Weighted Average Exercise Price, Common Stock Warrants Outstanding Ending Balance	$ 322.64	$ 72.27
Weighted Average Remaining Life in years, Common Stock Warrants Contractual Term		4 years 6 months
Weighted Average Exercise Price, BTX Warrants issued in connection with the BTX Purchase Agreement		4 years
Common Stock Warrants Exchanged In Connection With Amendment
Weighted Average Remaining Life in years, Common Stock Warrants Contractual Term	4 years 4 days	4 years