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Organization, Properties, Basis of Presentation, Financial Instruments and Recent Accounting Standards (Tables) | 9 Months Ended
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Sep. 30, 2011
Organization, Properties, Basis of Presentation, Financial Instruments and Recent Accounting Standards |
Summary of the entity's investment in real estate assets, excluding assets held for syndication and assets held for sale |
|  | As of September 30, |
|  | 2011 |  | 2010 |
Commercial real estate: |  |  |  |  |
Number of properties |  | 35 |  | 33 |
Rentable square feet |  | 6,929,891 |  | 6,417,299 |

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- Definition Tabular disclosure of real estate properties and units in those properties that are included in the discussion of the nature of an entity's operations. + Details
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