Summary of Significant Accounting Policies (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Value of furniture and fixtures minimum range	$ 3,000
Value of furniture and fixtures maximum range	13,000
Partially Owned Consolidated Properties	19
Partially Owned Consolidated Units	3,752
Noncontrolling Interests - Partially Owned Properties	107,493,000	77,688,000
Partially Owned Limited Life Partnership Properties	6
Noncontrolling Interest Balance Limited Life Partnerships	(8,220,357)
Noncontrolling Interests Settlement Value	$ 37,805,506
Lease Intangibles, Average Term	6
Furniture and Fixtures [Member]
Property, Plant and Equipment, Estimated Useful Lives	5
Furniture and Fixtures Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives	10
Building Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives	8
Building [Member]
Property, Plant and Equipment, Estimated Useful Lives	30