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Leasing Activity (Summary Of Future Minimum Rental Revenues Excluding Recovery Of Operating Expenses) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Leasing Activity [Abstract]  
2016 $ 265,816
2017 201,788
2018 146,980
2019 99,678
2020 63,771
Thereafter 122,574
Total $ 900,607