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Property and Equipment Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 11,081	$ 10,511
Property and equipment, gross	147,429	153,997
Accumulated depreciation	68,915	76,230
Property and equipment, net	78,514	77,767
Computers and peripheral equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	51,389	61,343
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,838	7,934
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 78,121	$ 74,209

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- Definition

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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