Less: Accumulated Amortization.

No definition available.

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Namespace Prefix:	mays_
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- Definition

Initial recognition of operating lease right-of-use assets.

+ References

No definition available.

+ Details

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Namespace Prefix:	mays_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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Property and Equipment (Schedule of Leased Property real estate Rental Operations Consists) (Details) - USD ($)	Jan. 31, 2020	Aug. 02, 2019
Property, Plant and Equipment [Line Items]
Operating lease right-of-use-assets	$ 29,384,531
Accumulated Amortization	(1,163,821)
Operating lease right-of-use-assets	$ 28,220,710	$ 10,190,334
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life lease terms	7 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life lease terms	54 years