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Summary Of Significant Accounting Policies (Supplemental Consolidated Statements Of Cash Flows Information) (Details) - USD ($)
 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Supplemental disclosure of cash activities:    
Cash paid for interest $ 14,249,000 $ 16,924,000
Supplemental disclosure of non-cash activities:    
Capitalization of interest and financing costs $ 244,000 402,000
Mortgage loans payable assumed upon acquisition   (53,439,000)
Mortgage loans payable assumed by buyer   15,557,000
Conversions of OP Units into common stock   371,000
Deed-in-lieu of foreclosure of properties:    
Real estate transferred   (6,238,000)
Mortgage loan payable and related obligations settled   $ 7,661,000