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Investments (Schedule Of Fair Value Method Investments, Balance Sheets And Income Statements) (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 29,511,000 | [1] |  |  |  | $ 44,156,000 | [1] |  |  |  | $ 29,511,000 | [1] | $ 44,156,000 | [1] | $ 50,056,000 | $ 52,617,000
Net property, plant and equipment |  | 260,725,000 |  |  |  |  | 231,315,000 |  |  |  |  | 260,725,000 |  | 231,315,000 |  |  |
Other assets and deferred charges |  | 30,790,000 |  |  |  |  | 27,869,000 |  |  |  |  | 30,790,000 |  | 27,869,000 |  |  |
Total assets | [1] | 651,162,000 |  |  |  |  | 623,260,000 |  |  |  |  | 651,162,000 |  | 623,260,000 |  |  |
Liabilities and Shareholders’ Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other noncurrent liabilities |  | 95,000,000 |  |  |  |  | 104,000,000 |  |  |  |  | 95,000,000 |  | 104,000,000 |  |  |
Equity |  | 310,783,000 |  |  |  |  | 272,748,000 |  |  |  |  | 310,783,000 |  | 272,748,000 |  | 372,029,000 | $ 402,664,000
Total liabilities and shareholders’ equity |  | 651,162,000 |  |  |  |  | 623,260,000 |  |  |  |  | 651,162,000 |  | 623,260,000 |  |  |
Revenues & Expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of goods sold |  |  |  |  |  |  |  |  |  |  |  | 668,626,000 |  | 725,459,000 |  | 778,113,000 |
Income tax (expense) benefit | [2] |  |  |  |  |  |  |  |  |  |  | (3,217,000) |  | (8,928,000) |  | (9,387,000) |
Net income (loss) |  | 1,728,000 |  | $ 12,048,000 | $ 3,408,000 | $ 7,281,000 | (5,876,000) |  | $ (36,723,000) | $ 594,000 | $ 9,870,000 | 24,466,000 |  | (32,135,000) |  | 36,879,000 |
kaleo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 102,329,000 |  |  |  |  | 91,844,000 |  |  |  |  | 102,329,000 |  | 91,844,000 |  |  |
Restricted cash |  | 31,000 |  |  |  |  | 8,182,000 |  |  |  |  | 31,000 |  | 8,182,000 |  |  |
Other current assets |  | 15,391,000 |  |  |  |  | 9,070,000 |  |  |  |  | 15,391,000 |  | 9,070,000 |  |  |
Net property, plant and equipment |  | 13,011,000 |  |  |  |  | 8,453,000 |  |  |  |  | 13,011,000 |  | 8,453,000 |  |  |
Other assets and deferred charges |  | 472,000 |  |  |  |  | 2,903,000 |  |  |  |  | 472,000 |  | 2,903,000 |  |  |
Total assets |  | 131,234,000 |  |  |  |  | 120,452,000 |  |  |  |  | 131,234,000 |  | 120,452,000 |  |  |
Liabilities and Shareholders’ Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current liabilities |  | 50,134,000 |  |  |  |  | 10,261,000 |  |  |  |  | 50,134,000 |  | 10,261,000 |  |  |
Liabilities, Other than Long-term Debt, Noncurrent |  | 822,000 |  |  |  |  | 552,000 |  |  |  |  | 822,000 |  | 552,000 |  |  |
Other noncurrent liabilities |  | 143,380,000 |  |  |  |  | 142,696,000 |  |  |  |  | 143,380,000 |  | 142,696,000 |  |  |
Equity |  | (63,102,000) |  |  |  |  | (33,057,000) |  |  |  |  | (63,102,000) |  | (33,057,000) |  |  |
Total liabilities and shareholders’ equity |  | $ 131,234,000 |  |  |  |  | $ 120,452,000 |  |  |  |  | 131,234,000 |  | 120,452,000 |  |  |
Revenues & Expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  | 56,188,000 |  | 35,731,000 |  | 21,156,000 |
Cost of goods sold |  |  |  |  |  |  |  |  |  |  |  | 15,428,000 |  | 14,147,000 |  | 3,801,000 |
Expenses and other, net |  |  |  |  |  |  |  |  |  |  |  | 71,548,000 |  | 63,042,000 |  | 48,447,000 |
Income tax (expense) benefit |  |  |  |  |  |  |  |  |  |  |  | (35,000) |  | (481,000) |  | 8,100,000 |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  | (30,823,000) |  | (41,939,000) |  | (22,992,000) |
Effect of Excluding Gain on Contract Termination from Expenses and Other, Net |  |  |  |  |  |  |  |  |  |  |  | 89.6 |  |  |  |  |
Harbinger Capital Partners Special Situations Fund L P [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments, Other Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Withdrawal Proceeds Received |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 100,000 |  | $ 200,000 |
[1] | Information on exports and foreign operations are provided on the previous page. Cash and cash equivalents includes funds held in locations outside the U.S. of $23.8 million and $27.7 million at December 31, 2016 and 2015, respectively. Export sales relate almost entirely to PE Films. Operations outside the U.S. in The Netherlands, Hungary, China and India also relate to PE Films. Operations in Brazil are primarily related to Flexible Packaging Films, but also include PE Films operations. Sales from locations in The Netherlands and Hungary are primarily to customers located in Europe. Sales from locations in China (Guangzhou and Shanghai) are primarily to customers located in China, but also include other customers in Asia.
[2] | See Notes 1, 3, 4 and 18 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.

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