Shareholders' Equity (Details Narrative) - USD ($)	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Subsidiary, Sale of Stock [Line Items]
Dividends, preferred stock
Series B Preferred Stock [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference	$ 100
Dividends payable amount per share	10
Series C Preferred Stock [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference	1.00
Dividends payable amount per share	0.10
Preferred stock, redemption price per share	$ 0.10
Convertible preferred stock, shares issued upon conversion	25
Preferred stock conversion premium price per share	$ 4.20
Preferred stock, conversion basis	Each share of Series C Preferred Stock is convertible into 25 shares of the Company's common stock.
Series D Preferred Stock [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred stock liquidation preference	$ 1,500
Convertible preferred stock, shares issued upon conversion	5,000
Preferred stock, conversion basis	Each share of Series D Preferred Stock is convertible into 5,000 shares of the Company's common stock.