Major Customer, Segment And Geographic Information (Schedule Of Total Assets By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Segment Reporting Information [Line Items]
Total	$ 830,756	$ 642,910	$ 556,661	$ 536,975	$ 701,076	$ 523,825	$ 412,560	$ 393,229	$ 2,567,302	$ 2,030,690	$ 1,548,093
Long-lived Assets	407,520				326,756				407,520	326,756
United States [Member]
Segment Reporting Information [Line Items]
Total									1,255,148	1,028,840	757,837
Long-lived Assets	209,576				161,472				209,576	161,472	161,636
Europe [Member]
Segment Reporting Information [Line Items]
Total									858,452	670,959	563,061
Long-lived Assets	158,324				135,087				158,324	135,087	142,234
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Total									358,904	267,158	183,599
Long-lived Assets	31,609				23,617				31,609	23,617	19,418
All Other International [Member]
Segment Reporting Information [Line Items]
Total									94,798	63,733	43,596
Long-lived Assets	$ 8,011				$ 6,580				$ 8,011	$ 6,580	$ 6,722