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Net Change In Operating Accounts (Tables)
 6 Months Ended
Jun. 30, 2012
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:  
 
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
)