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Equity Investments in Real Estate (Details 2) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Equity Method Investment Summarized Financial Information    
Assets $ 1,099,466 $ 1,125,342
Liabilities (715,044) (748,312)
Partners/members equity $ 384,422 $ 377,030