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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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.14)
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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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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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-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Property and Equipment Property and Equipment Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jan. 02, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 6,300	$ 5,600
Depreciation and amortization	8,132	$ 7,697
Property, plant and equipment, gross	201,027		$ 197,938
Accumulated depreciation	67,990		65,472
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,186		7,124
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,336		$ 8,885
Capital Leased Assets, Gross	400
Capital Lease Obligations [Member]
Property, Plant and Equipment [Line Items]
Accumulated depreciation	300
Accounts Payable \| Irvine, California \| Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,200