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Net Change in Operating Accounts (Effect Of Changes In The Operating Accounts On Cash Flows From Operating Activities) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Increase (Decrease) in Operating Capital [Abstract]    
Other assets, net $ 102 $ 2,062
Accounts payable and accrued expenses (5,942) (18,714)
Accrued real estate taxes 1,774 4,779
Other liabilities 17 (3,026)
Other 1,483 1,455
Change in operating accounts and other $ (2,566) $ (13,444)