Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Apr. 01, 2012	Apr. 03, 2011
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 33,564	$ 96,844
Other comprehensive income, net of tax:
Foreign currency translation reclassification adjustment included in net income		2,266
Unrealized gains on investments:
Unrealized gains on investments arising during period	744	199
Less: Reclassification adjustment for gains included in net income	(466)	(184)
unrealized gains on investments	278	15
Defined benefit pension and post-retirement plans:
Amortization of prior service (benefit) cost included in net periodic pension and post-retirement costs	(92)	6
Other comprehensive income	186	2,287
Comprehensive income	$ 33,750	$ 99,131

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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