FINANCIAL INSTRUMENTS AND CREDIT RISK CONCENTRATIONS (Narrative) (Details) - tenants	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018
Concentration Risk [Line Items]
Number of tenants	50	50
Four Customers [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk	68.80%	77.70%
Four Customers [Member] \| Unbilled Receivables [Member]
Concentration Risk [Line Items]
Concentration risk	68.44%
Three Customers [Member] \| Unbilled Receivables [Member]
Concentration Risk [Line Items]
Concentration risk		66.90%
Three Customers [Member] \| Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	44.40%	44.60%

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Subparagraph (a)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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