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Business Segments (Schedule Of Segment Reporting Information By Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenue from External Customer [Line Items] |  |  |
Net Sales | $ 903,582 | $ 798,223 | $ 729,604
Sales | 938,564 | 826,455 | 755,290
Goodwill, Impairment Loss | 0 | 0 | (13,696)
Total | 79,016 | 102,108 | 85,769
Interest income | 57 | 73 | 44
Interest expense | 4,990 | 3,386 | 2,587
Gain (loss) on investment accounted for under the fair value method | (14,602) | (14,160) | (14,720)
Loss on sale of business |  |  | 50,027
Stock option-based compensation expense | 1,424 | 2,495 | 2,161
Corporate expenses, net | 41,295 | 41,859 | 42,912
Income (loss) from continuing operations before income taxes | 32,770 | 67,221 | (25,046)
Income tax expense (benefit) | 4,389 | 9,284 | (8,213)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent | 28,381 | 57,937 | (16,833)
Income (loss) from discontinued operations, net of tax | 74 | (111) | (58,611)
Net income (loss) | 28,455 | 57,826 | (75,444)
kaleo |  |  |
Revenue from External Customer [Line Items] |  |  |
Gain (loss) on investment accounted for under the fair value method | 1,406 | 12,780 | (60,900)
Bright View Technologies |  |  |
Revenue from External Customer [Line Items] |  |  |
Loss on sale of business | 0 | 0 | 2,299
PE Films |  |  |
Revenue from External Customer [Line Items] |  |  |
Net Sales | 97,571 | 118,920 | 139,288
Earnings before interest, taxes, depreciation and amortization (EBITDA) | 11,949 | 27,694 | 45,107
Cost, Depreciation and Amortization | 6,280 | 6,263 | 6,762
Earnings before interest and taxes (EBIT) | 5,669 | 21,431 | 38,345
Plant shutdowns, asset impairments, restructurings and other | (646) | (371) | (1,974)
Goodwill, Impairment Loss |  | 0 |
Aluminum Extrusions |  |  |
Revenue from External Customer [Line Items] |  |  |
Net Sales | 637,872 | 539,325 | 455,711
Earnings before interest, taxes, depreciation and amortization (EBITDA) | 66,800 | 55,948 | 55,137
Cost, Depreciation and Amortization | 17,414 | 16,272 | 17,403
Earnings before interest and taxes (EBIT) | 49,386 | 39,676 | 37,734
Plant shutdowns, asset impairments, restructurings and other | (310) | 3,237 | (3,506)
Goodwill, Impairment Loss | 0 | 0 | (13,696)
PET Films |  |  |
Revenue from External Customer [Line Items] |  |  |
Earnings before interest, taxes, depreciation and amortization (EBITDA) | 27,452 | 31,684 | 30,645
Cost, Depreciation and Amortization | 2,444 | 1,988 | 1,761
Earnings before interest and taxes (EBIT) | 25,008 | 29,696 | 28,884
Flexible Packaging Films |  |  |
Revenue from External Customer [Line Items] |  |  |
Net Sales | 168,139 | 139,978 | 134,605
Plant shutdowns, asset impairments, restructurings and other | (91) | 8,439 | (18)
Freight |  |  |
Revenue from External Customer [Line Items] |  |  |
Cost of Goods and Services Sold | $ 34,982 | $ 28,232 | $ 25,686

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