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BUSINESS SEGMENTS - Schedule Of Net Sales By Product Group (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Revenue from External Customer [Line Items] |  |
Total | $ 159,172 | $ 138,957
Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 133,635 | 114,222
PE Films |  |
Revenue from External Customer [Line Items] |  |
Total | 25,537 | 24,735
Nonresidential building & construction | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 67,601 | 68,228
Consumer durables | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 11,667 | 7,670
Automotive | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 10,998 | 10,189
Residential building & construction | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 8,998 | 7,591
Electrical | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 15,341 | 5,607
Machinery & equipment | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 15,283 | 11,716
Distribution | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 3,747 | 3,221
Subtotal | Aluminum Extrusions |  |
Revenue from External Customer [Line Items] |  |
Total | 133,635 | 114,222
Surface protection films | PE Films |  |
Revenue from External Customer [Line Items] |  |
Total | 18,770 | 17,011
Overwrap packaging | PE Films |  |
Revenue from External Customer [Line Items] |  |
Total | 6,767 | 7,724
Subtotal | PE Films |  |
Revenue from External Customer [Line Items] |  |
Total | $ 25,537 | $ 24,735

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