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Impairments and Other Charges Impairments and Other Charges (Tables)
 12 Months Ended
Dec. 31, 2011
Impairment or Disposal of Tangible Assets Disclosure [Abstract]  
Impairment and Other Charges By Period
The following table illustrates impairment and other charges recognized during the years ended December 31, 2011, 2010 and 2009, respectively (in thousands):
 
 
2011
 
2010
 
2009
Undeveloped land
$
12,931

 
$
9,834

 
$
136,581

Buildings
—

 
—

 
78,087

Investments in unconsolidated companies
—

 
—

 
56,437

Other real estate related assets
—

 
—

 
31,461

Impairment charges
$
12,931

 
$
9,834

 
$
302,566

Less: Impairment charges included in discontinued operations
—

 
—

 
(27,206
)
Impairment charges - continuing operations
$
12,931

 
$
9,834

 
$
275,360