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Segment Reporting (Schedule Of Segment Reporting Information By Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Assets | $ 755,610 |  | $ 755,743
Total net sales | 249,921 | $ 212,720 |
Add back freight | 8,790 | 8,306 |
Sales as shown in the Consolidated Statements of Income | 258,711 | 221,026 |
Total Segment Income (Loss) | 24,843 | 10,453 |
Interest income | 56 | 74 |
Interest expense | 1,644 | 1,180 |
Gain (loss) on investment in kaléo accounted for under fair value method | 8,200 | 3,300 |
Gain (Loss) on Disposition of Assets | 0 | 164 |
Stock option-based compensation costs | 86 | 3 |
Corporate expenses, net | 7,918 | 6,523 |
Income from continuing operations before income taxes | 23,451 | 6,121 |
Income taxes from continuing operations | 5,287 | 2,418 |
Net income | 18,164 | 3,703 |
kaleo |  |  |
Segment Reporting Information [Line Items] |  |  |
Gain (loss) on investment in kaléo accounted for under fair value method | 8,200 | 3,300 |
PE Films |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 293,662 |  | 289,514
Total net sales | 93,249 | 86,411 |
Operating profit from ongoing operations | 14,034 | 9,031 |
Plant shutdowns, asset impairments, restructurings and other | (1,052) | (2,068) |
Flexible Packaging Films [Member] [Domain] |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 47,810 |  | 49,915
Total net sales | 28,437 | 26,710 |
Operating profit from ongoing operations | 1,715 | (1,998) |
Plant shutdowns, asset impairments, restructurings and other | 0 | 0 |
Aluminum Extrusions |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 272,609 |  | $ 268,127
Total net sales | 128,235 | 99,599 |
Operating profit from ongoing operations | 10,199 | 9,829 |
Plant shutdowns, asset impairments, restructurings and other | $ (53) | $ (4,341) |

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