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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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PROPERTY PLANT AND EQUIPMENT (PPE BREAKOUT BY TYPE TABLE) (DETAILS) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 677,318	$ 660,081	$ 628,351
Less: Accumulated depreciation and amortization	(526,281)	(491,792)
Property, Plant and Equipment, Net, Total	151,037	168,289
Land And Building [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	38,868	38,833
Technology Equipment [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	364,854	359,581
Equipment [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	42,858	41,035
Furniture And Fixtures
Property Plant and Equipment Line Items
Property, plant and equipment, gross	68,248	62,606
Leasehold Improvements
Property Plant and Equipment Line Items
Property, plant and equipment, gross	162,232	157,788
Vehicles [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	143	$ 238
Construction In Progress [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 115