Balance Sheet Components (Property and Equipment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2012	Jan. 01, 2012
Property and equipment:
Property and equipment, gross	$ 19,889	$ 20,671
Accumulated depreciation and amortization	(17,230)	(18,490)
Property and equipment, net	2,659	2,181
Equipment [Member]
Property and equipment:
Property and equipment, gross	12,803	12,200
Software [Member]
Property and equipment:
Property and equipment, gross	5,682	7,065
Furniture and Fixtures [Member]
Property and equipment:
Property and equipment, gross	746	747
Leasehold Improvements [Member]
Property and equipment:
Property and equipment, gross	$ 658	$ 659

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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