COST OF REVENUES (Details)	12 Months Ended
	Apr. 30, 2021 USD ($) ft²
Retail Building
Area of land sold	14,000
Warehouse and Office Buildings
Area of land sold	61,000
New Mexico | Retail Building
Cost of revenues on sale of building and other | $	$ 3,308,000
Area of land sold	14,000
Florida | Warehouse and Office Buildings
Cost of revenues on sale of building and other | $	$ 2,414,000
Area of land sold	61,000