Balance Sheet Components Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 30, 2012
Property and equipment:
Property and equipment, gross	$ 19,965	$ 19,889
Accumulated depreciation and amortization	(17,855)	(17,230)
Property and equipment, net	2,110	2,659
Equipment [Member]
Property and equipment:
Property and equipment, gross	12,857	12,803
Software [Member]
Property and equipment:
Property and equipment, gross	5,697	5,682
Furniture and Fixtures [Member]
Property and equipment:
Property and equipment, gross	746	746
Leasehold Improvements [Member]
Property and equipment:
Property and equipment, gross	$ 665	$ 658

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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