Segment Reporting (Schedule Of Financial Information Concerning Reportable Segments) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Loss from continuing operations before provision for income taxes				$ (65,420)
Predecessor
Segment Reporting Information [Line Items]
Total net sales		$ 125,809		288,303
Total operating loss		(6,615)		(47,189)
Other expense (income), net		733		1,151
Interest expense		8,796		17,421
Interest income		(268)		(341)
Loss from continuing operations before provision for income taxes		(15,876)		(65,420)
Predecessor | Industrial Materials
Segment Reporting Information [Line Items]
Total net sales		125,809		288,303
Total operating loss		4,632		(22,312)
Predecessor | Corporate, R&D and Other
Segment Reporting Information [Line Items]
Total operating loss		$ (11,247)		$ (24,877)
Successor
Segment Reporting Information [Line Items]
Total net sales	$ 115,365		$ 210,941
Total operating loss	(22,614)		(50,033)
Other expense (income), net	(1,198)		(960)
Interest expense	6,436		12,896
Interest income	0		(12)
Loss from continuing operations before provision for income taxes	(27,852)		(61,957)
Successor | Industrial Materials
Segment Reporting Information [Line Items]
Total net sales	115,365		210,941
Total operating loss	(16,291)		(36,538)
Successor | Corporate, R&D and Other
Segment Reporting Information [Line Items]
Total operating loss	$ (6,323)		$ (13,495)