Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	$ 791	$ 826	$ 1,565	$ 1,655
Interest cost	1,383	1,419	2,736	2,851
Expected return on plan assets	(542)	(456)	(1,076)	(910)
Amortization of prior service cost (credit)	13	0	25	0
Amortization of losses (gains)	1,201	1,282	2,372	2,581
Curtailments and settlements	201	0	396	0
Net periodic benefit cost	3,047	3,071	6,018	6,177
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	0	0	0	0
Interest cost	2,889	2,885	5,889	5,828
Expected return on plan assets	(2,826)	(3,398)	(5,651)	(6,783)
Amortization of prior service cost (credit)	36	16	72	32
Amortization of losses (gains)	1,651	2,074	3,301	4,096
Curtailments and settlements	0	0	0	0
Net periodic benefit cost	1,750	1,577	3,611	3,173
U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	32	30	63	60
Interest cost	85	84	170	167
Amortization of prior service cost (credit)	(209)	(209)	(418)	(418)
Amortization of losses (gains)	(7)	23	(15)	45
Net periodic benefit cost	(99)	(72)	(200)	(146)
Non-U.S. Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net service cost	68	68	135	137
Interest cost	36	36	72	73
Amortization of prior service cost (credit)	0	0	0	0
Amortization of losses (gains)	17	19	34	38
Net periodic benefit cost	121	$ 123	$ 241	$ 248
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	35,000
Republic of China (Taiwan) [Member] | Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Company pension contributions	$ 16,966