BASIS OF PRESENTATION AND LIQUIDITY (Details) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015		Jan. 31, 2014
Total consideration	$ 4,579,000		$ 6,901,000
Less: senior secured convertible note	(314,000)		(459,000)
Less: make-whole amount on senior secured convertible note	(643,000)		(949,000)
Total inducement expense	3,622,344	0	5,492,842	[1]	0
Series F Preferred Stock [Member]
Total consideration	3,373,000		4,963,000
Series G Preferred Stock [Member]
Total consideration	$ 1,206,000		$ 1,938,000

[1] (1) Write-offs and recoveries