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Note 1 - Organization (Details Textual)	Sep. 30, 2025
Number of Properties, Multifamily Apartments	115
Number of Consolidated Properties, Multifamily Apartments	1
Number of Units in Real Estate Property	33,818
Number of Investments in Developing Real Estate	1
Number of Units in Real Estate Properties Upon Completion	296
Number of Unconsolidated Joint Ventures	4
Number of Unconsolidated Joint Ventures, Multifamily Apartment Communities	3
Number of Units in Real Estate Property, Multifamily Apartment Communities	862
Number of Unconsolidated Joint Ventures, Multifamily Apartment Properties	1
Number of Units in Real Estate Property, Multifamily Apartment Properties	324

X

- Definition

The number of consolidated properties classified as multifamily apartments.

+ References

No definition available.

+ Details

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X

- Definition

The number of investments in real estate that are under development.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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X

- Definition

The number of properties classified as multifamily apartments.

+ References

No definition available.

+ Details

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X

- Definition

The number of unconsolidated joint ventures.

+ References

No definition available.

+ Details

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Namespace Prefix:	irt_
Data Type:	xbrli:pureItemType
Balance Type:	na
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X

- Definition

The number of unconsolidated joint ventures classified as multifamily apartment communities.

+ References

No definition available.

+ Details

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Namespace Prefix:	irt_
Data Type:	xbrli:pureItemType
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X

- Definition

The number of unconsolidated joint ventures classified as multifamily apartment properties.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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X

- Definition

The number of units in real estate properties upon completion.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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X

- Definition

The number of units in real estate property classified as multifamily apartment communities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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X

- Definition

The number of units in real estate property classified as multifamily apartment properties.

+ References

No definition available.

+ Details

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Namespace Prefix:	irt_
Data Type:	xbrli:pureItemType
Balance Type:	na
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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
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