Retirement Plans (Details) (USD $)	3 Months Ended
	Apr. 01, 2012	Apr. 03, 2011
Defined Benefit Plan Disclosure [Line Items]
Contribution to foreign pension plans	$ 700,000
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	722,000	769,000
Interest cost	4,083,000	4,327,000
Expected return on plan assets	(4,087,000)	(3,913,000)
Amortization of unrecognized, Prior service cost/benefit	58,000	155,000
Total net periodic (benefit) cost	776,000	1,338,000
Post-Retirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	19,000	16,000
Interest cost	110,000	136,000
Amortization of unrecognized, Prior service cost/benefit	(150,000)	(149,000)
Total net periodic (benefit) cost	$ (21,000)	$ 3,000