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Summary Of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2010
Summary Of Significant Accounting Policies [Abstract]  
Useful Lives Of Related Real Estate And Other Assets

Buildings and improvements

     37.8 years   

Tenant lease intangibles

     14.3 years   

Tenant improvements

     5.4 years   

Furniture, equipment and other

     9.5 years