Pensions and Other Postretirement Benefits (Details 1) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 20	$ 29	$ 39	$ 57
Interest cost	146	196	292	391
Amortization of prior service (credit) cost	(111)	(110)	(221)	(220)
Amortization of transition obligation	12	18	24	37
Amortization of gains	(61)	51	(122)	(102)
Net periodic benefit cost	6	82	12	163
Foreign Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	71	61	138	128
Interest cost	73	70	142	146
Amortization of prior service (credit) cost	0	0	0	0
Amortization of transition obligation	0	0	0	0
Amortization of gains	0	0	0	0
Net periodic benefit cost	144	131	280	274
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	4,081	3,992	8,149	8,057
Expected return on plan assets	(4,888)	(4,648)	(9,541)	(9,049)
Amortization of prior service (credit) cost	612	158	1,253	202
Amortization of gains	2,201	2,352	4,303	4,657
Curtailments and settlements	148	0	148	0
Net periodic benefit cost	2,154	1,854	4,312	3,867
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	849	757	1,676	1,534
Interest cost	2,679	2,686	5,241	5,563
Expected return on plan assets	(398)	(457)	(789)	(923)
Amortization of prior service (credit) cost	0	0	0	0
Amortization of gains	254	45	503	87
Curtailments and settlements	0	0	0	0
Net periodic benefit cost	$ 3,384	$ 3,031	$ 6,631	$ 6,261