Commitments to Acquire/Dispose of Real Estate (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Land Parcel [Member]
Commitments to Acquire Real Estate
Purchase Price For Commitments To Acquire	$ 10,290
Land Parcel [Member]
Commitments to Acquire Real Estate
Land Parcels Contracted to be Acquired	1
Commitments to Dispose of Real Estate
Land Parcels Contracted to be Disposed	1
Sales price-Rental Properties	$ 40,300