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Divestiture Related Activities (Tables)
 12 Months Ended
Dec. 31, 2012
Divestiture-Related Activities [Abstract]  
Gains (Losses) on Divestitures and Impairment Charges [Table Text Block]
(Losses) gains on divestitures and impairment charges, net consist of the following for the years ended December 31:
 
2012
 
2011
 
2010
 
(In thousands)
(Losses) gains on divestitures, net
$
617

 
$
(8,526
)
 
$
16,547

Impairment losses
(2,150
)
 
(2,451
)
 
(8,035
)
 
$
(1,533
)
 
$
(10,977
)
 
$
8,512