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Property and Equipment Property and Equipment (Details) $ in Thousands		6 Months Ended
	Jan. 26, 2016 ft²	Jul. 02, 2016 USD ($) ft²	Jan. 02, 2016 USD ($)
Property, Plant and Equipment [Line Items]
Property Plant and Equipment, Occupied Square Feet | ft²	70,700	16,830
Property, Plant and Equipment, Transfers and Changes		$ 6,200
Property, plant and equipment, gross		201,027	$ 197,938
Accumulated depreciation and amortization		(67,990)	(65,472)
Property and equipment, net		133,037	132,466
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		43,106	42,460
Building and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		85,546	78,877
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		23,738	23,738
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		15,202	15,023
Tooling
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		13,113	13,079
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		7,777	7,734
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Capital Leased Assets, Gross		400
Property, plant and equipment, gross		9,336	8,885
Demonstration units
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		978	973
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		45	45
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		2,186	$ 7,124
Capital Lease Obligations [Member]
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization		$ (300)

X

- Definition

The amount of square feet occupied.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

+ References

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-Publisher FASB
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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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+ References

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