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Details of Selected Balance Sheet Accounts - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Details of Selected Balance Sheet Accounts [Abstract]
Property, plant and equipment	$ 1,140,743	$ 1,151,533
Accumulated depreciation	(810,625)	(812,950)
Property, plant, and equipment, net	$ 330,118	$ 338,583

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Details of Selected Balance Sheet Accounts [Abstract]

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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