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Summary of Revenue And Net Income (Loss) for Properties Acquired (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	$ 9,134
Net Income allocable to common shares	2,266
Lakes of Northdale
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	2,603
Net Income allocable to common shares	709
Haverford Place
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	1,078
Net Income allocable to common shares	302
South Terrace
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	2,071
Net Income allocable to common shares	379
Cherry Grove
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	526
Net Income allocable to common shares	140
Riverchase
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	533
Net Income allocable to common shares	70
Kensington
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	736
Net Income allocable to common shares	187
Schirm Farms
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	711
Net Income allocable to common shares	170
Live Oak Trace
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	424
Net Income allocable to common shares	108
Tides at Calabash
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	315
Net Income allocable to common shares	177
Brunswick Point
Business Acquisition Pro Forma Information Nonrecurring Adjustment [Line Items]
Total revenue	137
Net Income allocable to common shares	$ 24

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

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