Financial Instruments and Credit Risk Concentrations (Details) - tenants	3 Months Ended	12 Months Ended
Oct. 31, 2020	Oct. 31, 2019	Jul. 31, 2020
Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk	60.00%		55.00%
Number of tenants	6		4
Customer One [Member] \| Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	30.00%	44.00%
Number of tenants	2	3

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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