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Net Change in Operating Accounts (Tables)
 3 Months Ended
Mar. 31, 2017
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)
2017
 
2016
Change in assets:
 
 
 
Other assets, net
$
2,200

 
$
6,073

Change in liabilities:
 
 
 
Accounts payable and accrued expenses
(7,786
)
 
1,768

Accrued real estate taxes
(24,359
)
 
(19,722
)
Other liabilities
(2,211
)
 
(5,779
)
Other
743

 
740

Change in operating accounts and other
$
(31,413
)
 
$
(16,920
)