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Financial Instruments and Credit Risk Concentrations (Details) - Customer One [Member] - Customer Concentration Risk [Member] - tenants	6 Months Ended		12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jul. 31, 2021
Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	29.00%	30.00%
Number of tenants	2	2
Allowance for Uncollectible Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk	66.00%		66.00%
Number of tenants	5		5

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Represents the number of tenants from whom rental income is derived.

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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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- Definition

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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