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v3.20.2

Segment Reporting Schedule of Revenue by Geographic Location (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | $ 177,917 | $ 198,880 | $ 543,544 | $ 606,573 |
UNITED STATES |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 129,654 | 145,629 | 395,207 | 455,509 |
PE Films |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 26,440 | 34,487 | 103,444 | 99,313 |
PE Films | Personal Care Materials [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 5,042 | 5,607 | 17,262 | 17,305 |
PE Films | Surface Protection Films [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 19,868 | 27,053 | 79,919 | 76,194 |
PE Films | Films For Other Markets [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 1,530 | 1,827 | 6,263 | 5,814 |
PE Films | Film Products Subtotal [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 26,440 | 34,487 | 103,444 | 99,313 |
Flexible Packaging Films [Member] [Domain] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 35,856 | 34,888 | 100,534 | 101,950 |
Aluminum Extrusions [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 115,621 | 129,505 | 339,566 | 405,310 |
Aluminum Extrusions [Member] | Nonresidential Building And Construction [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 62,611 | 64,340 | 190,476 | 202,998 |
Aluminum Extrusions [Member] | Consumer Durables [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 11,160 | 12,939 | 31,491 | 44,865 |
Aluminum Extrusions [Member] | Distribution [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 7,796 | 9,366 | 22,055 | 26,678 |
Aluminum Extrusions [Member] | Automotive [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 10,332 | 11,091 | 25,375 | 36,214 |
Aluminum Extrusions [Member] | Residential Building And Construction [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 10,149 | 11,110 | 29,016 | 33,060 |
Aluminum Extrusions [Member] | Aluminum Extrusions Subtotal [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 115,621 | 129,505 | 339,566 | 405,310 |
Aluminum Extrusions [Member] | Machinery and Equipment BNL [Domain] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 7,581 | 10,191 | 23,147 | 29,585 |
Aluminum Extrusions [Member] | Electrical [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 5,992 | 10,468 | 18,006 | 31,910 |
Exports From United States [Member] | Asia [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 14,255 | 23,163 | 59,816 | 61,037 | $ 32,100
Revenues | 5,900 | 8,600 | 25,100 | 21,300 |
Exports From United States [Member] | CANADA |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 7,200 | 2,120 | 13,359 | 10,352 |
Exports From United States [Member] | Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 1,468 | 1,494 | 4,272 | 4,227 |
Exports From United States [Member] | Latin America [Member] |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 465 | 880 | 1,953 | 1,359 |
Operations Outside United States [Member] | BRAZIL |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | 24,875 | 25,594 | 68,937 | 73,864 |
Operations Outside United States [Member] | CHINA |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Sales | $ 0 | $ 0 | $ 0 | $ 225 |

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