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Plants Shutdowns, Asset Impairments, Restructurings And Other (Schedule Of Accrued Expenses Associated With Asset Impairments And Exit And Disposal Activities) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 13 Months Ended
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019
Restructuring Reserve [Roll Forward] |  |  |  |  |
January 1, 2019 |  |  | $ 776 |  |
Charges |  |  | 2,131 |  |
Cash payments |  |  | (1,200) |  |
Charges against assets |  |  | (695) |  |
June 30, 2019 | $ 1,012 |  | 1,012 |  | $ 1,012
Restructuring Reserve, Accrual Adjustment |  |  | 0 |  |
Severance (a) |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
January 1, 2019 |  |  | 616 |  |
Charges |  |  | 968 |  |
Cash payments |  |  | (677) |  |
June 30, 2019 | 907 |  | 907 |  | 907
Long Lived Asset Impairment [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
January 1, 2019 |  |  | 0 |  |
Charges |  |  | 695 |  |
Cash payments |  |  | 0 |  |
Charges against assets |  |  | (695) |  |
June 30, 2019 | 0 |  | 0 |  | 0
Restructuring Reserve, Accrual Adjustment |  |  | 0 |  |
Other |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
January 1, 2019 |  |  | 160 |  |
Charges |  |  | 468 |  |
Cash payments |  |  | (523) |  |
Charges against assets |  |  | 0 |  |
June 30, 2019 | 105 |  | 105 |  | 105
Film Products Manufacturing Facility In Shanghai, China [Member] | Other Restructuring [Member] |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance Costs |  | $ 400 |  | $ 400 |
PE Films |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Severance Costs |  |  | 500 |  |
PE Films | Film Products Manufacturing Facility In Shanghai, China [Member] | Other Restructuring [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Cash payments | $ (300) |  | $ (500) |  | $ (3,000)

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