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Net Change In Operating Accounts (Tables)
 12 Months Ended
Dec. 31, 2017
Increase (Decrease) in Operating Capital [Abstract]  
Effect Of Changes In The Operating Accounts On Cash Flows From Operating Activities
The effect of changes in the operating accounts and other on cash flows from operating activities is as follows:
 
 
Year Ended December 31,
(in thousands)
2017
 
2016
 
2015
Change in assets:
 
 
 
 
 
Other assets, net
$
(6,724
)
 
$
(3,551
)
 
$
(1,687
)
Change in liabilities:
 
 
 
 
 
Accounts payable and accrued expenses
(2,300
)
 
(2,309
)
 
(15,478
)
Accrued real estate taxes
2,342

 
5,526

 
6,386

Other liabilities
(995
)
 
(2,361
)
 
2,245

Other
2,831

 
2,976

 
2,773

Change in operating accounts and other
$
(4,846
)
 
$
281

 
$
(5,761
)