Retirement Plans (Schedule Of Amounts Recognized Defined Benefit Pension Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011
Retirement Plans [Abstract]
Other Accrued Expenses	$ (3,654)	$ (1,564)
Pension and Other Post Retirement Benefits	(60,592)	(51,127)
Pension plan balance sheet total	(64,246)	(52,691)
Net actuarial loss	51,141	36,600
Prior service cost	1,904	2,108
Acquisitions		2,398
Total	$ 53,045	$ 41,106