Financial Instruments And Derivatives (Schedule Of Quantitative Information Associated With Fair Value Measurement Of Level 3) (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
Apr. 01, 2012	Dec. 31, 2011	Apr. 01, 2012 Discount Rate For Revenue Earn-Out [Member]	Apr. 01, 2012 Discount Rate For Cellular Earn-Out [Member]	Apr. 01, 2012 Maximum [Member] Revenue Earn-Out-Probability Of High Case (Scenario) For Calendar Year 2012 Revenue [Member]	Apr. 01, 2012 Minimum [Member] Revenue Earn-Out-Probability Of Low Case (Scenario) For Calendar Year 2012 Revenue [Member]
Revenue earn-out scenario probability percentage					30.00%	70.00%
Earn-out discount rate			3.50%	3.50%
Contingent consideration, fair value	$ 61,210	$ 68,892

Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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+ Details