BASIC AND DILUTED NET LOSS PER COMMON SHARE (Details)	3 Months Ended
	Jul. 31, 2014		Jul. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	40,717,481		3,972,430
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	79,207		116,279
Senior secured convertible notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	36,166,907	[1],[2]	1,581,355
Stock warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,774,796	[1]	2,274,796
Series E preferred stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	696,571	[1]	0

[1] These diluted shares are non-exercisable/convertible until there are enough authorized shares.

[2] The Company and the Holders are currently reviewing the Notes and are seeking to resolve the number of shares of the Company’s common stock the Make-Whole Amount would be convertible into.