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Sales of Real Estate and Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2011
Sales of Real Estate and Discontinued Operations [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]
The following presents the operating results for the properties sold and held for sale during the years ended December 31, 2011, 2010 and 2009:
 
 
Year Ending December 31,
 
 
2011
 
2010
 
2009
Total gross revenues
 
$
9,630

 
$
31,874

 
$
58,687

Pre-tax net loss, including gains on sales
 
$
(40,050
)
 
$
(32,932
)
 
$
(81,187
)