Income Taxes (Reconciliation Of The Beginning And Ending Amount Of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
	Dec. 30, 2012	Dec. 25, 2011	Dec. 26, 2010
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 16,300,000	$ 15,900,000
Gross unrecognized tax benefits at beginning of year	15,850,000	12,846,000	14,884,000
Increases in tax positions for prior years	225,000	997,000	1,161,000
Decreases in tax positions for prior years	(1,068,000)	(44,000)	0
Increases in tax positions for current year	3,800,000	808,000	1,229,000
Settlements	(683,000)	(443,000)	(928,000)
Acquisition reserves	1,167,000	4,640,000	240,000
Lapse in statute of limitations	(2,956,000)	(2,954,000)	(3,740,000)
Gross unrecognized tax benefits at end of year	$ 16,335,000	$ 15,850,000	$ 12,846,000