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Property, Plant and Equipment - Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Land	$ 4,575	$ 4,575
Building and land improvements	35,667	35,578
Building	68,161	68,157
Furniture and fixtures	19,956	19,917
Computer hardware and software	73,440	72,274
Engineering and other equipment	134,438	134,771
Total property, plant and equipment	336,237	335,272
Less: accumulated depreciation	(281,853)	(279,506)
Total property, plant and equipment, net	$ 54,384	$ 55,766

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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 of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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