FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS Fair Value by Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Receivable and Preferred Equity Investments	$ 59,989	$ 89,202
Mortgage Notes Payable and Convertible Notes Payable	788,840	854,924
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Receivable and Preferred Equity Investments	59,989	90,612
Mortgage Notes Payable and Convertible Notes Payable	$ 792,737	$ 863,639

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date.

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