Subsequent Event (Details)	1 Months Ended	12 Months Ended
Aug. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)
Subsequent Events [Abstract]
Leases square feet		58,832
Expiry year		February 2023
Total rent	$ 576,259
Brokage commission		$ 27,084

Date which lease or group of leases is set to expire, in YYYY-MM-DD format.

No definition available.

Name:	mays_LeaseExpirationDate
Namespace Prefix:	mays_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease terms are the contract terms of a lease agreement between a lessee, usually the tenant, and a lessor, typically the landlord.

+ References

No definition available.

+ Details

Name:	mays_TenantLease
Namespace Prefix:	mays_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of commission revenue from buying and selling securities on behalf of customers.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 05
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126941114&loc=d3e40544-110947

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(a),(b))
-URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash payments to lessor's for use of assets under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585

+ Details

Name:	us-gaap_PaymentsForRent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration