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Organization, Properties, Basis of Presentation, Financial Instruments and Recent Accounting Standards (Tables) | 6 Months Ended
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Jun. 30, 2012
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 sale |
|  |  | As of June 30, |
|  |  | 2012 |  |  |  | 2011 |
Commercial real estate: |  |  |  |  |  |  |  |
Number of properties |  |  | 36 |  |  |  | 34 |
Rentable square feet |  |  | 7,052,592 |  |  |  | 6,747,815 |

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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. + References No definition available. + Details
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