Balance Sheet Information (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2012	Dec. 30, 2011
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	$ 28,519	$ 28,992
Accumulated depreciation and amortization	(19,237)	(18,983)
Total	9,282	10,009
Computer equipment and software [Member]
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	8,148	7,089
Furniture and fixtures [Member]
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	1,682	1,761
Machinery and equipment [Member]
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	8,597	9,282
Leasehold improvements [Member]
Equipment and leasehold improvements, net
Equipment and leasehold improvements, gross	$ 10,092	$ 10,860

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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