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Net Change In Operating Accounts
 3 Months Ended
Mar. 31, 2018
Increase (Decrease) in Operating Capital [Abstract]  
Net Change in Operating Accounts
11. Net Change in Operating Accounts
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
)