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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, 2013
Organization, Properties, Basis of Presentation, Financial Instruments and Recent Accounting Standards |
Summary of the entity's investment in real estate assets, including one asset held for sale |
|  | As of September 30, |
|  | 2013 |  | 2012 |
Commercial real estate: |  |  |  |  |
Number of properties |  | 40 |  | 37 |
Rentable square feet |  | 9,807,483 |  | 7,439,195 |

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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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