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Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2011
Discontinued Operations [Abstract]  
Summary Of Discontinued Operations, Net Of Tax [Table Text Block]
           
(in thousands) 2011 2010 2009
Operating revenues $ 34,769 $ 133,013 $ 243,691
Operating costs and expenses   42,133   176,454   340,098
Loss from discontinued operations   (7,364)   (43,441)   (96,407)
Benefit from income taxes   (2,834)   (16,369)   (31,400)
Net loss from discontinued operations   (4,530)   (27,072)   (65,007)
Gain (loss) on sale of discontinued operations   2,975   (9,156)  
Provision for income taxes on sale of discontinued operations   2,616   5,869  
Loss from discontinued operations, net of tax $ (4,171) $ (42,097) $ (65,007)