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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 706,829	$ 657,143
Less: accumulated depreciation	512,462	485,361
Property, plant and equipment, net	194,367	171,782
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	11,448	11,650
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	104,023	103,563
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	330,821	317,073
Furniture and Fixtures, Office Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	149,145	145,945
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	66,569	65,293
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 44,823	$ 13,619

X

- Definition

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

+ References

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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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