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BUSINESS SEGMENTS - Schedule of Identifiable Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Revenue from External Customer [Line Items]
Total	$ 374,217	$ 356,357
Discontinued operations	0	126
Operating Segments
Revenue from External Customer [Line Items]
Total	374,217	356,357
Cash and cash equivalents	3,657	7,062
Aluminum Extrusions | Operating Segments
Revenue from External Customer [Line Items]
Total	272,161	247,205
PE Films | Operating Segments
Revenue from External Customer [Line Items]
Total	56,231	55,081
Subtotal | Operating Segments
Revenue from External Customer [Line Items]
Total	328,392	302,286
General corporate | Operating Segments
Revenue from External Customer [Line Items]
Total	$ 42,168	$ 46,883

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