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BUSINESS SEGMENTS - Schedule Of Net Sales By Product Group (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Revenue from External Customer [Line Items] |  |  |  |
Total | $ 172,963 | $ 148,610 | $ 332,133 | $ 287,568
Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 148,367 | 119,413 | 281,999 | 233,636
PE Films |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 24,596 | 29,197 | 50,134 | 53,932
Nonresidential building & construction | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 81,625 | 69,388 | 149,223 | 137,616
Consumer durables | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 12,751 | 8,559 | 24,418 | 16,230
Automotive | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 11,069 | 9,715 | 22,067 | 19,904
Residential building & construction | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 10,025 | 9,481 | 19,023 | 17,072
Electrical | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 12,522 | 6,927 | 27,863 | 12,534
Machinery & equipment | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 15,998 | 12,154 | 31,281 | 23,870
Distribution | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 4,377 | 3,189 | 8,124 | 6,410
Subtotal | Aluminum Extrusions |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 148,367 | 119,413 | 281,999 | 233,636
Surface protection films | PE Films |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 16,741 | 21,713 | 35,512 | 38,725
Overwrap packaging | PE Films |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | 7,855 | 7,484 | 14,622 | 15,207
Subtotal | PE Films |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Total | $ 24,596 | $ 29,197 | $ 50,134 | $ 53,932

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