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FINANCIAL INSTRUMENTS AND CREDIT RISK CONCENTRATIONS (Narrative) (Details) - Customer Concentration Risk [Member]	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Allowance for Uncollectible Accounts Receivable [Member] | Five Customers [Member]
Concentration Risk [Line Items]
Concentration risk	65.70%
Allowance for Uncollectible Accounts Receivable [Member] | Four Customers [Member]
Concentration Risk [Line Items]
Concentration risk		54.97%
Rental Income [Member] | Two Customers [Member]
Concentration Risk [Line Items]
Concentration risk	29.91%
Rental Income [Member] | Three Customers [Member]
Concentration Risk [Line Items]
Concentration risk		43.65%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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