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Disposition of Properties and Properties Held for Sale (Tables)
12 Months Ended
Dec. 31, 2011
6. Disposition of Properties and Properties Held for Sale [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
Below is a summary of the results of operations of the disposed property as presented in discontinued operations for the respective periods (in thousands):
Summary statements of operations - disposed properties
 
2011
 
2010
 
2009
Total revenues
 
$

 
$
388

 
$
1,090

Total expenses
 

 
486

 
6,304

Discontinued operations
 
$

 
$
(98
)
 
$
(5,214
)
Schedule Of Outparcel Sales [Table Text Block]
Below is a summary of outparcel sales that we completed during the years ended December 31, 2011, 2010 and 2009, respectively (in thousands, except number of outparcels):
 
 
2011
 
2010
 
2009
Number of outparcels
 

 
3

 
1

Net proceeds
 
$

 
$
602

 
$
1,577

Gain on sales of outparcels included in other income
 
$

 
$
161

 
$
3,293