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Net Change in Operating Accounts (Tables)
 3 Months Ended
Mar. 31, 2018
Increase (Decrease) in Operating Capital [Abstract]  
Effect Of Changes In The Operating And Other Accounts On Cash Flows From Operating Activities
The effect of changes in the operating and other accounts on cash flows from operating activities is as follows:
  
Three Months Ended
March 31,
(in thousands)
2018
 
2017
Change in assets:
 
 
 
Other assets, net
$
2,236

 
$
2,200

Change in liabilities:
 
 
 
Accounts payable and accrued expenses
(9,836
)
 
(7,786
)
Accrued real estate taxes
(22,464
)
 
(24,359
)
Other liabilities
1,600

 
(2,211
)
Other
700

 
743

Change in operating accounts and other
$
(27,764
)
 
$
(31,413
)