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. 29, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 25,450	$ 19,025
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	10,901	9,898
Americas Excluding United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	2,079	36
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	986	1,173
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	9,564	6,763
APAC Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,920	$ 1,155