INVESTMENT ASSETS, NET- Additional Information (Details)	12 Months Ended
	Apr. 30, 2019 a	Jul. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)
Area of Land	12,000
Lease Expiration Date	Dec. 31, 2029
Depreciation On Warehouse And Other Facilities | $		$ 122,000	$ 122,000
Florida
Area of Land	204,000