Goodwill And Other Intangible Assets (Schedule Of Changes In The Carrying Value Of Goodwill) (Details) - USD ($) $ in Thousands	5 Months Ended	6 Months Ended		7 Months Ended
	Dec. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Aug. 14, 2015
Goodwill [Roll Forward]
Beginning Balance		$ 172,059
Ending Balance	$ 172,059	171,117
Predecessor
Goodwill [Roll Forward]
Beginning Balance	384,132		$ 420,129	$ 420,129
Adjustments				(616)
Ending Balance				384,132
Successor
Goodwill [Roll Forward]
Beginning Balance		172,059
Adjustments	1,641	1,058
Goodwill transferred to discontinued operations		(2,000)
Ending Balance	$ 172,059	$ 171,117
Needle Coke [Member]
Goodwill [Roll Forward]
Impairment			$ (35,400)	$ (35,381)