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Net Change In Operating Accounts
 6 Months Ended
Jun. 30, 2012
Increase (Decrease) in Operating Capital [Abstract]  
Net Change In Operating Accounts
11. Net Change in Operating Accounts
The effect of changes in the operating accounts and other on cash flows from operating activities is as follows:  
 
Six Months Ended
  
June 30,
(in thousands)
2012
 
2011
Change in assets:
 
 
 
Other assets, net
$
(4,884
)
 
$
5,047

Change in liabilities:
 
 
 
Accounts payable and accrued expenses
(10,120
)
 
(9,530
)
Accrued real estate taxes
8,718

 
5,086

Other liabilities
(9,477
)
 
(4,591
)
Other
397

 
209

Change in operating accounts and other
$
(15,366
)
 
$
(3,779
)