Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
REVENUE:
Rental and other property revenue	$ 49,465	$ 45,616
Other revenue	75	139
Total revenue	49,540	45,755
EXPENSES:
Property operating expenses	$ 19,886	$ 18,418
Type of Cost, Good or Service [Extensible List]	us-gaap:AssetManagement1Member	us-gaap:AssetManagement1Member
Property management expenses	$ 1,813	$ 1,683
General and administrative expenses	3,107	2,734
Depreciation and amortization expense	12,447	11,224
Total expenses	37,253	34,059
Operating income	12,287	11,696
Interest expense	(9,721)	(8,340)
Other income		144
Net income:	2,566	3,500
Income allocated to noncontrolling interest	(26)	(88)
Net income allocable to common shares	$ 2,540	$ 3,412
Earnings per share:
Basic	$ 0.03	$ 0.04
Diluted	$ 0.03	$ 0.04
Weighted-average shares:
Basic	88,989,450	85,303,010
Diluted	89,516,224	85,535,089

Rental and other property revenue.

No definition available.

Name:	irt_RentalAndOtherPropertyRevenue
Namespace Prefix:	irt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227