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Property: (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Property: |
Components of property |
|  | March 31, 2013 |  | December 31, 2012 |
--- | --- | --- | --- | --- | ---
Land |  | $ | 1,723,388 |  | $ | 1,572,621 |
Buildings and improvements |  |  | 6,715,582 |  |  | 6,417,674 |
Tenant improvements |  |  | 534,354 |  |  | 496,203 |
Equipment and furnishings |  |  | 150,559 |  |  | 149,959 |
Construction in progress |  |  | 408,860 |  |  | 376,249 |
|  |  | 9,532,743 |  |  | 9,012,706 |
Less accumulated depreciation |  |  | (1,600,180 | ) |  | (1,533,160 | )
|  | $ | 7,932,563 |  | $ | 7,479,546 |

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- Definition Tabular disclosure of the components of real estate investment property. + References No definition available. + Details
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Data Type: | nonnum:textBlockItemType
Balance Type: | na
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- Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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