Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Determinable Useful Lives By Major Category) (Details) - Predecessor - USD ($) $ in Thousands	Dec. 31, 2015	Aug. 14, 2015
Goodwill [Line Items]
Gross Carrying Amount	$ 155,700	$ 155,700
Accumulated Amortization & Impairment	(6,188)	(10,187)
Net Carrying Amount	149,512	145,513
Trade Name
Goodwill [Line Items]
Gross Carrying Amount	26,800	26,800
Accumulated Amortization & Impairment	(1,048)	(1,746)
Net Carrying Amount	25,752	25,054
Technological Know-How
Goodwill [Line Items]
Gross Carrying Amount	63,200	63,200
Accumulated Amortization & Impairment	(3,327)	(5,528)
Net Carrying Amount	59,873	57,672
Customer-Related Intangible
Goodwill [Line Items]
Gross Carrying Amount	65,700	65,700
Accumulated Amortization & Impairment	(1,813)	(2,913)
Net Carrying Amount	$ 63,887	$ 62,787