Employee Benefit Plans (Schedule Of Accrued Benefits) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2012	Dec. 25, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Accrued pensions — current	$ 4,687	$ 4,453
Accrued pensions	95,839	78,815
Net amount recognized at end of year	100,526	83,268
Accumulated benefit obligation at end of year	$ 96,774	$ 80,744