Basic and Diluted Loss Per Share - Schedule of Common Shares Not Included in Calculation of Diluted Net Loss Per Share (Details) - shares	6 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Class of Stock [Line Items]
Total	15,461,200	15,461,200
Series C Preferred Stock [Member]
Class of Stock [Line Items]
Total	1,551,200	1,551,200
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Total	13,910,000	13,910,000