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Summary of Significant Accounting Policies (Schedule Of Restricted Deposits And Mortgage Escrows) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Restricted cash $ 16,340 $ 1,952
Mortgage escrows 1,687 1,122
Total 18,027 $ 3,074
Qualified escrow for like-kind exchange, proceeds $ 13,600