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Organization (Details) - Sep. 30, 2023 | property | unit | jointVenture
--- | --- | --- | ---
Real Estate Properties [Line Items] |  |  |
Number of multifamily properties owned | 120 |  |
Number of unconsolidated joint venture | 1 |  |
Number of units located with multifamily properties | unit |  | 35,427 |
Number of joint ventures | 1 |  | 4
Number of developing multifamily apartment community | 2 |  |
Number of units in developing multifamily apartment community | unit |  | 810 |
Number of operating property | 2 |  |
Number of units in operating property | unit |  | 653 |
Denver Colorado |  |  |
Real Estate Properties [Line Items] |  |  |
Number of multifamily properties owned | 2 |  |
Number of units located with multifamily properties | unit |  | 621 |

X
- Definition Number of Developing Multifamily Apartment Community + References No definition available. + Details
Name: | irt_NumberOfDevelopingMultifamilyApartmentCommunity
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Joint Ventures + References No definition available. + Details
Name: | irt_NumberOfJointVentures
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Operating Property + References No definition available. + Details
Name: | irt_NumberOfOperatingProperty
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Unconsolidated Joint Venture + References No definition available. + Details
Name: | irt_NumberOfUnconsolidatedJointVenture
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Units in Developing Multifamily Apartment Community + References No definition available. + Details
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Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Units In Operating Property + References No definition available. + Details
Name: | irt_NumberOfUnitsInOperatingProperty
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of real estate properties 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 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=irt_DenverColoradoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |