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Segment Reporting (Schedule Of Financial Information Concerning Reportable Segments) (Details) $ in Thousands | 5 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2015 USD ($) | Aug. 14, 2015 USD ($) | Dec. 31, 2015 USD ($) segment | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of Reportable Segments | segment |  |  | 2 |  |
Net sales |  |  | $ 686,672 | $ 1,085,304 | $ 1,166,674
Loss Related to Bankruptcy of Major Customer |  |  | 4,800 |  |
Industrial Materials [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other (income) expense, net |  | $ 2,700 |  | 60,300 | 34,500
Preferred Stock Issuance Expense |  | 3,200 |  |  |
Mark To Market Adjustment |  |  | 3,500 | 4,200 |
Impairment of long-lived assets and goodwill |  | 35,400 |  | 75,700 |
Engineered Solutions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other (income) expense, net | $ 3,000 | 6,900 |  | 3,600 | 22,000
Preferred Stock Issuance Expense |  | 2,500 |  |  |
Mark To Market Adjustment |  |  | 9,200 | 5,900 |
Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Other (income) expense, net |  | 2,100 |  | 1,800 | 6,300
Preferred Stock Issuance Expense |  | 19,400 |  |  |
Mark To Market Adjustment |  |  | (6,300) | 4,200 |
Proxy Context Costs |  |  | 2,400 |  |
Predecessor [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 437,931 |  | 1,085,304 | 1,166,674
Total segment operating income (loss) |  | (88,477) |  | (255,620) | (2,570)
Other (income) expense, net |  | 1,335 |  | 2,445 | 1,698
Interest expense |  | 27,118 |  | 37,057 | 36,037
Interest income |  | (367) |  | (330) | (203)
Income before income taxes |  | (116,563) |  | (294,792) | (40,102)
Impairment of long-lived assets and goodwill |  | 35,381 |  | 197,220 | 0
Predecessor [Member] | Industrial Materials [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 341,974 |  | 840,103 | 909,448
Total segment operating income (loss) |  | (25,678) |  | (50,260) | 20,007
Predecessor [Member] | Engineered Solutions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 95,957 |  | 245,201 | 257,226
Total segment operating income (loss) |  | (15,368) |  | (138,271) | 28,392
Predecessor [Member] | Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total segment operating income (loss) |  | $ (47,431) |  | (67,089) | $ (50,969)
Successor [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 248,741 |  |  |  |
Total segment operating income (loss) | (16,709) |  |  |  |
Other (income) expense, net | (943) |  |  |  |
Interest expense | 10,916 |  |  |  |
Interest income | (11) |  |  |  |
Income before income taxes | (26,671) |  |  |  |
Impairment of long-lived assets and goodwill | 0 |  |  |  |
Successor [Member] | Industrial Materials [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 193,223 |  |  |  |
Total segment operating income (loss) | (4,017) |  |  |  |
Successor [Member] | Engineered Solutions [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 55,518 |  |  |  |
Total segment operating income (loss) | (457) |  |  |  |
Successor [Member] | Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total segment operating income (loss) | $ (12,235) |  |  |  |
Impairments [Member] | 2014 Engineered Solutions Rationalization [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Impairments (recorded in Impairments) |  |  | $ 121,570 | $ 121,600 |

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