XML 51 R35.htm IDEA: XBRL DOCUMENT
v3.20.4

Investments in Real Estate - Additional Information (Detail) | Dec. 31, 2020 Property
--- | ---
Real Estate Properties Base Purchase Price [Abstract] |
Number of multifamily properties owned | 56

X
- Definition Real estate properties base purchase price. + References No definition available. + Details
Name: | irt_RealEstatePropertiesBasePurchasePriceAbstract
Namespace Prefix: | irt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant