Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	$ 790	$ 812	$ 2,355	$ 2,467
Interest cost	1,361	1,412	4,097	4,263
Expected return on plan assets	(529)	(448)	(1,605)	(1,358)
Amortization of prior service cost (credit)	12	0	37	0
Amortization of losses (gains)	1,196	1,278	3,568	3,859
Curtailments and settlements	205	0	601	0
Net periodic benefit cost	3,035	3,054	9,053	9,231
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	0	0	0	0
Interest cost	2,945	2,915	8,834	8,743
Expected return on plan assets	(2,825)	(3,391)	(8,476)	(10,174)
Amortization of prior service cost (credit)	36	16	108	48
Amortization of losses (gains)	1,650	2,048	4,951	6,144
Curtailments and settlements	0	0	0	0
Net periodic benefit cost	1,806	1,588	5,417	4,761
U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	31	31	94	91
Interest cost	85	83	255	250
Amortization of prior service cost (credit)	(209)	(209)	(627)	(627)
Amortization of losses (gains)	(8)	22	(23)	67
Net periodic benefit cost	(101)	(73)	(301)	(219)
Non-U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	67	69	202	206
Interest cost	36	37	108	110
Amortization of prior service cost (credit)	0	0	0	0
Amortization of losses (gains)	17	19	51	57
Net periodic benefit cost	120	$ 125	$ 361	$ 373
Minimum [Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated company contributions in next fiscal year	0
Maximum [Member] | U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated company contributions in next fiscal year	20,000
Republic of China (Taiwan) [Member] | Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company pension contributions	$ 16,966