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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	Sep. 30, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 18,927	$ 15,884
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	10,549	9,901
Americas Excluding United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	36	44
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	668	331
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	6,651	4,909
APAC Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,023	$ 699

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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