Retirement Plans (Schedule Of Assumptions Used To Determine Net Periodic Pension Cost) (Details)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on assets	8.25%	8.25%	8.25%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.93%	6.27%	6.95%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.15%	5.67%	6.85%