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Organization - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2024 jointVenture joint_venture property unit
Real Estate Properties [Line Items] |
Number of properties | property | 113
Number of unconsolidated joint venture | property | 1
Number of units located with multifamily properties | unit | 33,615
Number of joint ventures | jointVenture | 4
Joint ventures that operate apartment communities | joint_venture | 3
Number of units in developing multifamily apartment community | unit | 886
Number of operating property | property | 1
Number of units in operating property | unit | 378
Denver, Colorado |
Real Estate Properties [Line Items] |
Number of units located with multifamily properties | unit | 296
Number of real estate properties, construction in progress | property | 1

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: | duration

X
- Definition Number of Joint Ventures, Own and Operate Apartment Communities + References No definition available. + Details
Name: | irt_NumberOfJointVenturesOwnAndOperateApartmentCommunities
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 Real Estate Properties, Construction in Progress + References No definition available. + Details
Name: | irt_NumberOfRealEstatePropertiesConstructionInProgress
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of Real Estate Properties Excluding Development Properties + References No definition available. + Details
Name: | irt_NumberOfRealEstatePropertiesExcludingDevelopmentProperties
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
Name: | irt_NumberOfUnitsInDevelopingMultifamilyApartmentCommunity
Namespace Prefix: | irt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Units In Operating Property, Under Construction + References No definition available. + Details
Name: | irt_NumberOfUnitsInOperatingPropertyUnderConstruction
Namespace Prefix: | irt_
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
Name: | us-gaap_NumberOfUnitsInRealEstateProperty
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_StatementGeographicalAxis=irt_DenverColoradoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |