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Accrued Expenses (Schedule Of Reconciliation Of Beginning And Ending Balances Of Accrued Expenses Associated With Asset Impairments And Costs Associated With Exit And Disposal Activities) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Loss on asset impairments |  |  |  | $ 223 | $ 101,282 | $ 1,436
Accrued Freight |  | $ 2,091 | $ 1,581 | 2,091 | 1,581 |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | 1,103 | 2,408 | 1,867
Charges |  |  |  | 3,005 | 102,488 | 2,684
Cash spend |  |  |  | (3,099) | (2,198) | (1,540)
Charges against assets |  |  |  | (141) | (101,595) | (603)
Restructuring Reserve, Accrual Adjustment |  |  |  | (92) |  |
Ending balance |  | 776 | 1,103 | 776 | 1,103 | 2,408
Severance(a) |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | 627 | 1,854 | 1,462
Charges |  |  |  | 2,654 | 589 | 1,535
Cash spend |  |  |  | (2,665) | (1,816) | (1,143)
Ending balance |  | 616 | 627 | 616 | 627 | 1,854
Asset Impairments(b) |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance |  |  |  | 0 | 0 | 0
Charges |  |  |  | 233 | 101,595 | 603
Charges against assets |  |  |  | (141) | (101,595) | (603)
Restructuring Reserve, Accrual Adjustment |  |  |  | (92) |  |
Ending balance |  | 0 | 0 | 0 | 0 | 0
Other |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Beginning balance | [1] |  |  | 476 | 554 | 405
Charges | [1] |  |  | 118 | 304 | 546
Cash spend | [1] |  |  | (434) | (382) | (397)
Ending balance | [1] | 160 | 476 | 160 | 476 | $ 554
Flexible Packaging Films [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Loss on asset impairments |  | $ 101,000 | $ 101,000 | $ 101,000 | $ 101,000 |
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