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Discontinued Operations and Assets Held for Sale (Results of Operations Associated with Discontinued Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Discontinued Operations and Assets Held for Sale [Abstract]        
Revenues   $ 598 $ 6 $ 853
Income (loss) before income taxes $ (1,815) 425 (2,650) 1,177
Income tax benefit
Income (loss) from discontinued operations $ (1,815) $ 425 [1] $ (2,650) $ 1,177 [1]
[1] Reclassified to conform to current presentation (see Note B).