Details of Certain Consolidated Balance Sheet Captions (Property, Plant and Equipment, net) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 1,585,382	$ 1,566,730
Less: accumulated depreciation	(1,013,207)	(956,634)
Property, plant and equipment, net	572,175	610,096
Land
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	64,778	72,701
Buildings and improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	419,454	441,006
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	666,376	634,838
Software, furniture and fixtures and other
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 434,774	$ 418,185

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.

+ References

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