XML 77 R63.htm IDEA: XBRL DOCUMENT
v3.21.2

RELATED PARTY TRANSACTIONS (Schedule of Summarizes Assets and Liabilities) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Jul. 31, 2021 | Jul. 31, 2020 | Apr. 30, 2020 | Jul. 31, 2019
Operating Lease Right-Of-Use Assets | $ 34,566,169 | $ 37,077,038 | $ 37,698,819 | $ 27,104,937
Operating Lease liabilities | $ 27,840,930 | 29,044,966 | $ 29,326,365 | $ 17,863,507
Expiration Date | Jul. 31, 2030 |  |  |
Jamaica Avenue at 169th Street [Member] |  |  |  |
Operating Lease Right-Of-Use Assets | $ 12,842,642 | 13,190,809 |  |
Operating Lease liabilities | $ 4,959,450 | 5,084,505 |  |
Expiration Date | May 31, 2030 |  |  |
504-506 Fulton Street [Member] |  |  |  |
Operating Lease Right-Of-Use Assets | $ 2,831,134 | 2,890,056 |  |
Operating Lease liabilities | $ 2,946,306 | $ 3,008,181 |  |
Expiration Date | Apr. 30, 2031 |  |  |

X
- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Present value of lessee's discounted obligation for lease payments from 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 (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- 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=123391704&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mays_JamaicaAvenueAt169thStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=mays_FiveHundredFour506FultonStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |