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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-Name Accounting Standards Codification

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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.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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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.

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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.

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Property and Equipment (Details) (USD $)	12 Months Ended			1 Months Ended
Property and Equipment (Details) (USD $)	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012	Nov. 30, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 181,874,000us-gaap_PropertyPlantAndEquipmentGross	$ 209,608,000us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization	(154,078,000)	(167,889,000)
Property and equipment, net	27,796,000us-gaap_PropertyPlantAndEquipmentNet	41,719,000us-gaap_PropertyPlantAndEquipmentNet
Proceeds from sale of land and building	14,625,000	0	0
Depreciation expense	11,400,000us-gaap_Depreciation	11,200,000us-gaap_Depreciation	13,600,000us-gaap_Depreciation
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	0	1,456,000
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,516,000	27,827,000
Computer and test equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	158,117,000	154,508,000
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,028,000	9,122,000
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,213,000	16,695,000
Land and Building
Property, Plant and Equipment [Line Items]
Gain (Loss) on Disposition of Property Plant Equipment				1,600,000
Property and equipment, gross				30,900,000
Accumulated depreciation and amortization				(17,900,000)
Proceeds from sale of land and building				$ 14,600,000
Lease term				8 years