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Net Change In Operating Accounts (Tables)
 12 Months Ended
Dec. 31, 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:
 
 
Year Ended December 31,
(in thousands)
2012
 
2011
 
2010
Change in assets:
 
 
 
 
 
Other assets, net
$
(2,443
)
 
$
5,183

 
$
(895
)
Change in liabilities:
 
 
 
 
 
Accounts payable and accrued expenses
2,320

 
2,026

 
2,209

Accrued real estate taxes
5,640

 
(122
)
 
(1,269
)
Other liabilities
(16,192
)
 
(17,152
)
 
4,188

Other
816

 
596

 
275

Change in operating accounts and other
$
(9,859
)
 
$
(9,469
)
 
$
4,508