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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PROPERTY PLANT AND EQUIPMENT (PPE BREAKOUT BY TYPE TABLE) (DETAILS) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 729,979	$ 677,318	$ 660,081
Less: Accumulated depreciation and amortization	(566,682)	(526,281)
Property, Plant and Equipment, Net, Total	163,297	151,037
Land And Building
Property Plant and Equipment Line Items
Property, plant and equipment, gross	38,858	38,868
Technology Equipment
Property Plant and Equipment Line Items
Property, plant and equipment, gross	390,899	364,854
Equipment
Property Plant and Equipment Line Items
Property, plant and equipment, gross	46,521	42,858
Furniture And Fixtures
Property Plant and Equipment Line Items
Property, plant and equipment, gross	76,856	68,248
Leasehold Improvements
Property Plant and Equipment Line Items
Property, plant and equipment, gross	176,467	162,232
Vehicles
Property Plant and Equipment Line Items
Property, plant and equipment, gross	158	143
Construction In Progress
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 220	$ 115