Business (Details)	Mar. 31, 2016
Property/Unit schedule
Wholly Owned Properties	291
Wholly Owned Units	73,226
Master Leased Properties Acquired	3
Master Leased Units	853
Partially Owned Consolidated Properties	18
Partially Owned Consolidated Units	3,471
Partially Owned Unconsolidated Properties	3
Partially Owned Unconsolidated Units	1,281
Military Housing Properties	2
Military Housing Units	5,161
Business (Textuals) [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent	96.10%
Number of States in which Entity Operates	11
Number of Real Estate Properties	317
Number of Units in Real Estate Property	83,992