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v3.19.1

COMMITMENTS AND CONTINGENCIES (Details) | Mar. 31, 2019 property unit
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Real Estate Properties [Line Items] |
Number of properties | 88
Subject to Restrictions on Taxable Dispositions |
Real Estate Properties [Line Items] |
Number of properties | 25
Number of apartment units | unit | 4,372

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | us-gaap_RealEstatePropertiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=iret_SubjectToRestrictionsOnTaxableDispositionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |