OTHER BALANCE SHEET CAPTIONS - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Components of Property and Equipment [Abstract]
Land, buildings, and improvements	$ 114,374	$ 105,257
Transportation equipment	664	3,317
Machinery and equipment	181,990	190,930
Construction in progress	16,702	14,454
Property, plant, and equipment, at cost	313,730	313,958
Less accumulated depreciation and amortization	(181,738)	(185,539)
Property, plant, and equipment, net	$ 131,992	$ 128,419

-- None. No documentation exists for this element. --

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- Definition

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 of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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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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