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Geographic and Product Data (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2012	Dec. 30, 2011
Property, plant and equipment, net	$ 5,439	$ 4,222
Us [Member]
Property, plant and equipment, net	3,052	1,460
Switzerland [Member]
Property, plant and equipment, net	984	1,010
Japan [Member]
Property, plant and equipment, net	$ 1,403	$ 1,752

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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