CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jul. 31, 2015	Apr. 30, 2015
Allowance for accounts receivable	$ 92,000	$ 92,000
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	2,200,649	982,660
Common stock, shares outstanding	2,200,649	982,660
Convertible Series F [Member]
Preferred stock, shares issued	0	5,268
Preferred Stock, Shares Outstanding	0	5,268
Preferred Stock, liquidation preference	$ 0	$ 0
Convertible Series F-1 [Member]
Preferred stock, shares issued	1,858	5,642
Preferred Stock, Shares Outstanding	1,858	5,642
Preferred Stock, liquidation preference	$ 3,089,348	$ 3,089,348
Convertible Series G [Member]
Preferred stock, shares issued	0	2,088
Preferred Stock, Shares Outstanding	0	2,088
Preferred Stock, liquidation preference	$ 0	$ 0
Convertible Series G-1 [Member]
Preferred stock, shares issued	2,122	3,128
Preferred Stock, Shares Outstanding	2,122	3,128
Preferred Stock, liquidation preference	$ 4,329,212	$ 4,329,212
Convertible Series H [Member]
Preferred stock, shares issued	3,943	0
Preferred Stock, Shares Outstanding	3,943	0
Preferred Stock, liquidation preference	$ 607,232	$ 607,232
Convertible Series H-1 [Member]
Preferred stock, shares issued	8,532	0
Preferred Stock, Shares Outstanding	8,532	0
Preferred Stock, liquidation preference	$ 1,415,030	$ 1,415,030