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.

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PROPERTY PLANT AND EQUIPMENT (PPE BREAKOUT BY TYPE TABLE) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 801,183	$ 728,009	$ 730,028
Less: Accumulated depreciation and amortization	(624,550)	(566,486)
Property, Plant and Equipment, Net, Total	176,633	161,523
Land And Building [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	32,942	33,286
Technology Equipment [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	447,260	411,653
Equipment [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	49,447	45,351
Furniture And Fixtures
Property Plant and Equipment Line Items
Property, plant and equipment, gross	85,191	74,538
Leasehold Improvements
Property Plant and Equipment Line Items
Property, plant and equipment, gross	186,083	161,960
Vehicles [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross	$ 260	90
Construction In Progress [Member]
Property Plant and Equipment Line Items
Property, plant and equipment, gross		$ 1,131