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Acquisitions and Divestitures Divestitures (Schedule of Selected Financial Information) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract] |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Revenue |  |  |  |  |  | $ 593,733 | $ 702,695
Disposal Group, Including Discontinued Operation, Operating Expense |  |  |  |  |  | 592,505 | 703,715
Disposal Group, Including Discontinued Operation, Operating Income (Loss) |  |  |  |  |  | 1,228 | (1,020)
Disposal Group, Including Discontinued Operation, Interest Income |  |  |  |  |  | 2 | 2
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  |  |  |  |  | 1,230 | (1,018)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |  |  |  |  |  | 875 | 0
Income (loss) from discontinued operations | $ 1,164 | $ 508 | $ 290 | $ 143 | $ 0 | $ 2,105 | $ (1,018)

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