Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2011 Y
Land Improvements [Member]
Estimated useful life
Minimum useful life	15.0
Maximum useful life	39.0
Building and Building Improvements [Member]
Estimated useful life
Minimum useful life	3.3
Maximum useful life	39.0
Lease Intangible [Member]
Estimated useful life
Minimum useful life	0.8
Maximum useful life	93.1
Personal Property [Member]
Estimated useful life
Minimum useful life	3.0
Maximum useful life	15.8