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Property: (Tables) | 12 Months Ended
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Dec. 31, 2013
Property, Plant and Equipment [Abstract] |
Components of property | Property at December 31, 2013 and 2012 consists of the following:
| 2013 |  | 2012
Land | $ | 1,707,005 |  |  | $ | 1,572,621 |
Buildings and improvements | 6,555,212 |  |  | 6,417,674 |
Tenant improvements | 537,754 |  |  | 496,203 |
Equipment and furnishings | 152,198 |  |  | 149,959 |
Construction in progress | 229,169 |  |  | 376,249 |
| 9,181,338 |  |  | 9,012,706 |
Less accumulated depreciation | (1,559,572 | ) |  | (1,533,160 | )
| $ | 7,621,766 |  |  | $ | 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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