Income Taxes (Components Of Provision For Income Taxes) (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	Dec. 31, 2010	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current, Federal									$ 7,250	$ 25,795	$ 3,404
Current, State									1,191	3,108	1,569
Current, Foreign									28,175	17,157	6,066
Total current									36,616	46,060	11,039
Deferred, Federal									12,477	(3,591)	10,504
Deferred, State									405	2,524	509
Deferred, Foreign									(122)	0	1,776
Total deferred									12,760	(1,067)	12,789
Provision for income taxes	$ 8,253	$ 13,795	$ 13,082	$ 14,246	$ 13,117	$ 13,411	$ 10,331	$ 8,134	$ 49,376	$ 44,993	$ 23,828