CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Apr. 30, 2017	Jul. 31, 2016
Common stock, par value (in dollars per share)	$ .001	$ 0.001
Common stock, shares authorized	2,450,000	2,450,000
Common stock, shares issued	1,068,101	908,541
Common stock, shares outstanding	1,068,101	908,541
Series F Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Convertible preferred stock, shares authorized	4,150	4,150
Convertible preferred stock, shares issued	0	120
Convertible preferred stock, shares outstanding	0	120
Convertible preferred stock, cumulative percentage of interest	9.00%	9.00%
Series G Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Convertible preferred stock, shares authorized	1,000	1,000
Convertible preferred stock, shares issued	0	500
Convertible preferred stock, shares outstanding	0	500
Convertible preferred stock, cumulative percentage of interest	9.00%	9.00%
Series H Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ 1,000	$ .001
Convertible preferred stock, shares authorized	109,000	109,000
Convertible preferred stock, shares issued	3,000	0
Convertible preferred stock, shares outstanding	3,000	0
Convertible preferred stock, cumulative percentage of interest	9.00%	9.00%
Series I Convertible Preferred Stock
Convertible preferred stock, par value (in dollars per share)	$ .001	$ .001
Convertible preferred stock, shares authorized	6,000	6,000
Convertible preferred stock, shares issued	790	0
Convertible preferred stock, shares outstanding	790	0
Convertible preferred stock, cumulative percentage of interest	9.00%	9.00%