Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Segment Information - Net Operating Income of Company's Reportable Segments (Parenthetical) (Details) - property	Mar. 31, 2016	Jun. 22, 2015
Segment Reporting Information [Line Items]
Number of Properties	121
Austin, Texas [Member]
Segment Reporting Information [Line Items]
Number of Properties	7
Broadmoor Austin Associates [Member]
Segment Reporting Information [Line Items]
Percentage of ownership interests		50.00%