Business (Details)	Mar. 31, 2014	Mar. 31, 2013
Noncontrolling Interest, Ownership Percentage by Parent	96.20%
Number of States in which Entity Operates	12
Number of Real Estate Properties	396
Number of Units in Real Estate Property	111,537
Property/Unit schedule
Wholly Owned Properties	367
Master Leased Properties Acquired		3
Partially Owned Consolidated Properties	20
Partially Owned Unconsolidated Properties	4
Military Housing Properties	2
Wholly Owned Units	99,936
Master Leased Units	853
Partially Owned Consolidated Units	4,020
Partially Owned Unconsolidated Units	1,669
Military Housing Units	5,059