XML 58 R41.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Summary of Disposition of Property's (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 22, 2015 | Dec. 31, 2017 | Dec. 31, 2016
Real Estate Properties [Line Items] |  |  |  |  |
Sale Price |  | $ 33,600 | $ 86,800 |  | $ 88,000
Gain (loss) on sale |  |  | 18,910 | [1] | 31,785
Net income allocable to common shares |  |  | $ 2,363 |  | 2,305
Copper Mill |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  | May 05, 2017 |  |
Sale Price |  |  | $ 32,000 |  |
Gain (loss) on sale | [1] |  | 15,595 |  |
Net income allocable to common shares |  |  | $ 548 |  | 1,105
Heritage Trace |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  | Jun. 01, 2017 |  |
Sale Price |  |  | $ 11,600 |  |
Gain (loss) on sale | [1] |  | (1,256) |  |
Net income allocable to common shares |  |  | $ 240 |  | (47)
Berkshire Square |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  | Jun. 09, 2017 |  |
Sale Price |  |  | $ 16,000 |  |
Gain (loss) on sale | [1] |  | 1,510 |  |
Net income allocable to common shares |  |  | $ 201 |  | 306
Crossings |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  | Nov. 28, 2017 |  |
Sale Price |  |  | $ 27,200 |  |
Gain (loss) on sale | [1] |  | 3,061 |  |
Net income allocable to common shares |  |  | $ 1,374 |  | $ 941
Cumberland Glen |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale | [2] |  |  |  | Feb. 18, 2016
Sale Price | [2] |  |  |  | $ 18,000
Gain (loss) on sale | [2] |  |  |  | $ 2,452
Belle Creek |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  |  |  | Apr. 07, 2016
Sale Price |  |  |  |  | $ 23,000
Gain (loss) on sale |  |  |  |  | $ 14,191
Tresa |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |
Date of Sale |  |  |  |  | May 05, 2016
Sale Price |  |  |  |  | $ 47,000
Gain (loss) on sale |  |  |  |  | $ 15,142
[1] | The gain (loss) on sale for these properties is net of $4,251 of defeasance and debt prepayment premium costs. All properties were previously classified as held for sale.
[2] | Gain (loss) on sale related to this property includes a defeasance premium of $1,343.

X
- Definition Income loss from disposal of real estate property allocable to common shares. + References No definition available. + Details
Name: | irt_IncomeLossFromDisposalOfRealEstatePropertyAllocableToCommonShares
Namespace Prefix: | irt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Sale price of real estate property. + References No definition available. + Details
Name: | irt_SalePriceOfRealEstateProperty
Namespace Prefix: | irt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DisposalDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.14(d)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_GainsLossesOnSalesOfInvestmentRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_CopperMillMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_HeritageTraceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_BerkshireSquareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_CrossingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_CumberlandGlenApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_BelleCreekApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=irt_TresaApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |