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Property and Equipment - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 197,938	$ 159,036
Construction-in-progress	7,124	25,731
Accumulated depreciation and amortization	(65,472)	(57,084)
Total	132,466	101,952
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	42,460	38,588
Building and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	78,877	30,678
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	23,738	22,894
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,023	13,035
Tooling
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,079	12,317
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,734	9,912
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,885	4,864
Demonstration units
Property, Plant and Equipment [Line Items]
Property and equipment, gross	973	972
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 45	$ 45

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
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

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-Publisher SEC
-Name Regulation S-X (SX)
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-Section 03
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