Summary of Significant Accounting Policies Schedule of Other Assets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other Assets [Abstract]
Prepaid Ground Rent	$ 7,527	$ 7,615
Prepaid Real Estate Taxes	8,116	7,983
Rent Inducements, net	7,101	7,572
Cash Surrender Value of Life Insurance	11,515	9,261
Restricted Cash and Cash Equivalents	4,354	2,528
Marketable Securities	2,366	2,366
Prepaid Insurance	2,370	2,589
Furniture, Fixtures and Equipment	437	634
Deposits on future settlements	1,129	3,884
Others	8,410	8,726
Other Assets	$ 53,325	$ 53,158

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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