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Investments in Real Estate (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Apr. 29, 2011
Assets acquired:
Investments in real estate, net	$ 126,523	$ 128,124	$ 101,733
Liabilities assumed:
Mortgage indebtedness			64,575	64,575
Carrying amount of net assets acquired			$ 37,158

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Total current liabilities of the broker-dealer, less certain exceptions as defined.

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The net of assets and liabilities.

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Amount of real estate investments, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; (7) other real estate investments; (8) real estate joint ventures; and (9) unconsolidated real estate and other joint ventures not separately presented.

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