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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Impairment of Long-Lived Assets (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Accounting Policies [Abstract] |  |
Impairment of real estate investments | $ 0 | $ 0

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- Definition Impairment of real estate continuing and discontinued operations. + References No definition available. + Details
Name: | iret_ImpairmentOfRealEstateContinuingAndDiscontinuedOperations
Namespace Prefix: | iret_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration