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Segment Reporting (Schedule Of Identifiable Assets By Segment) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Subtotal | $ 584,857 | $ 572,056 |  |
General corporate | 105,474 | 100,920 |  |
Cash, cash equivalents, and restricted cash at beginning of period | 39,769 | 34,397 | $ 62,321 | $ 36,491
Total assets | 730,100 | 707,373 |  |
PE Films |  |  |  |
Total assets | 232,316 | 231,720 |  |
Flexible Packaging Films [Member] [Domain] |  |  |  |
Total assets | 63,826 | 58,964 |  |
Aluminum Extrusions |  |  |  |
Total assets | $ 288,715 | $ 281,372 |  |

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