v2.4.0.8

Property and Equipment - Components of Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 70,886	$ 63,022
Accumulated depreciation and amortization	(49,415)	(43,456)
Construction-in-progress	3,395	4,358
Total	24,866	23,924
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	33,315	27,646
Tooling
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,636	10,557
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,039	9,394
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,921	4,339
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	45	45
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,974	8,725
Demonstration units
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 956	$ 2,316

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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-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

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X

- 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

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X

- Definition

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

-Publisher FASB

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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

-Publisher FASB

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