Segment Information, Operations By Geographic Area And Customer Concentration (Schedule Of Customer Concentration) (Details)	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Revenue, Major Customer [Line Items]
Percentage of net revenue (in percentage)	100.00%	100.00%
Virgin Media Limited And Affiliates [Member]
Revenue, Major Customer [Line Items]
Percentage of net revenue (in percentage)	11.00%	10.00%
Best Buy Company Incorporation And Affiliates [Member]
Revenue, Major Customer [Line Items]
Percentage of net revenue (in percentage)	9.00%	13.00%
Ingram Micro Incorporation And Affiliates [Member]
Revenue, Major Customer [Line Items]
Percentage of net revenue (in percentage)	9.00%	10.00%
All Others [Member]
Revenue, Major Customer [Line Items]
Percentage of net revenue (in percentage)	71.00%	67.00%