Real Estate And Accumulated Depreciation (Estimated Useful Lives Of Assets) (Details)	12 Months Ended
	Dec. 31, 2011 years
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of the assets (in years)	3
Maximum estimated useful lives of the assets (in years)	20
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of the assets (in years)	3
Maximum estimated useful lives of the assets (in years)	40
Furniture, Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Minimum estimated useful lives of the assets (in years)	5
Maximum estimated useful lives of the assets (in years)	10
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of the assets (in years)	5