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Segment Information, Operations By Geographic Area And Customer Concentration (Schedule Of Long-Lived Asset By Geographic Areas) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 01, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 14,716	$ 15,884
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	8,988	9,901
Americas Excluding United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	41	44
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	343	331
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	4,729	4,909
APAC Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 615	$ 699

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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