Business (Details)	Jun. 30, 2014
Noncontrolling Interest, Ownership Percentage by Parent	96.20%
Number of Real Estate Properties	397
Number of States in which Entity Operates	12
Number of Units in Real Estate Property	111,491
Consolidated Entities [Member]
Number of Real Estate Properties	369
Number of Units in Real Estate Property	100,210
Master-Leased Properties [Member]
Number of Real Estate Properties	3
Number of Units in Real Estate Property	853
Consolidated Properties [Member]
Number of Real Estate Properties	19
Number of Units in Real Estate Property	3,752
Unconsolidated Properties [Member]
Number of Real Estate Properties	4
Number of Units in Real Estate Property	1,669
Military Housing [Member]
Number of Real Estate Properties	2
Number of Units in Real Estate Property	5,007