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
-Paragraph 20
-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
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13537-108611

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

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Financial Instruments and Credit Risk Concentrations (Details)	3 Months Ended		12 Months Ended
	Oct. 31, 2019 USD ($) tenants	Oct. 31, 2018	Jul. 31, 2019 USD ($)
Concentration Risk [Line Items]
Write-offs of unbilled receivables \| $	$ 40,292		$ 118,238
Number of tenants \| tenants	50
Customer One [Member] \| Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	15.98%	16.16%
Customer Two [Member] \| Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	15.77%	13.81%
Customer Three [Member] \| Rental Income [Member]
Concentration Risk [Line Items]
Concentration risk	12.25%	11.95%