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Discontinued Operations (Tables)
6 Months Ended
Jun. 30, 2013
Discontinued Operations [Abstract]  
Summarized Income (Loss) from Discontinued Operations, Net Of Tax [Table Text Block]
   Three Months Ended Six Months Ended
   June 30, June 30,
(in thousands) 2013 2012 2013 2012
Operating revenues $ $ 17,908 $ 3,461 $ 41,079
Operating costs and expenses     (22,068)   (5,477)   (49,412)
Loss from discontinued operations     (4,160)   (2,016)   (8,333)
Benefit from income taxes     (1,370)   (676)   (2,759)
Net Loss from Discontinued Operations     (2,790)   (1,340)   (5,574)
Gain (loss) on sales of discontinued operations     29,541   (70)   26,459
Provision (benefit) for income taxes on sales of discontinued operations     11,000   (24)   (12,454)
Income (Loss) from Discontinued Operations, Net of Tax $ $ 15,751 $ (1,386) $ 33,339