Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Balance at January 1, 2011	$ 6,139	$ 3,850
Additions for tax positions taken during the current period	655	1,817
Additions for tax positions recorded in purchase accounting		1,219
Reductions resulting from settlements		(389)
Reductions resulting from a lapse of the statute of limitations	(763)	(358)
Balance at December 31, 2011	$ 6,031	$ 6,139