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Property and Equipment Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Leasehold improvements	$ 10,554	$ 8,769
Property and equipment, gross	137,471	116,745
Accumulated depreciation	75,612	68,053
Property and equipment, net	61,859	48,692
Computers and peripheral equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	58,995	53,937
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,742	7,332
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 60,180	$ 46,707

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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+ References

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