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Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands		Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation		$ (264,769)	$ (260,322)
Property, plant and equipment, net		89,404	89,741
Land and Land Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross		399	399
Buildings and Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross		73,746	73,248
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	[1]	$ 280,028	$ 276,416
[1] Includes $2,646 of platinum which is depleted based on actual usage. See Note 1, “Basis of Presentation,” for further discussion.

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