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Summary Of Significant Accounting Policies And Recent Accounting Pronouncements (Tables) | 12 Months Ended
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Dec. 31, 2011
Summary Of Significant Accounting Policies And Recent Accounting Pronouncements [Abstract] |
Expected Useful Lives Of Depreciable Property |
|  |  | September 30, |
|  | Estimated Useful Life |
Buildings and improvements |  |  | 5-35 years |
Furniture, fixtures, equipment and other |  |  | 3-20 years |
Intangible assets (in-place leases and above and below market leases) |  |  | underlying lease term |

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