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Organization - Additional Information (Detail)	12 Months Ended
	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

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Namespace Prefix:	irt_
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Balance Type:	na
Period Type:	duration

X

- Definition

Number of Joint Ventures, Own and Operate Apartment Communities

+ 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 Operating Property

+ 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 Real Estate Properties, Construction in Progress

+ 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 Real Estate Properties Excluding Development Properties

+ 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 Unconsolidated Joint Venture

+ 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 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, 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

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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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X

- Details

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