Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Minimum
Amounts Recognized in Other Comprehensive Income [Abstract]
Estimated future employer contributions in current fiscal year			$ 5,000
Maximum
Amounts Recognized in Other Comprehensive Income [Abstract]
Estimated future employer contributions in current fiscal year			10,000
U.S. Pension Plans
Net Periodic Benefit Cost [Abstract]
Service cost	$ 94		282
Interest cost	1,710	$ 1,570	5,200	$ 4,596
Expected return on plan assets	(2,392)	(2,223)	(7,226)	(6,859)
Net amortization: Net actuarial loss	693	1,101	2,027	2,459
Net periodic pension cost (benefit)	105	448	283	196
Amounts Recognized in Other Comprehensive Income [Abstract]
Company contributions			4,000
U.S. Retiree Healthcare Plan
Net Periodic Benefit Cost [Abstract]
Service cost	116	(91)	348	433
Interest cost	135	116	405	352
Expected return on plan assets	(130)	(129)	(390)	(373)
Net periodic pension cost (benefit)	121	(104)	363	412
Non-U.S. Pension Plans
Net Periodic Benefit Cost [Abstract]
Service cost	1,253	1,337	3,721	4,011
Interest cost	423	402	1,273	1,206
Expected return on plan assets	(401)	(410)	(1,206)	(1,230)
Net amortization: Prior service (credit) cost	(51)	14	(145)	42
Net amortization: Net actuarial loss	190	273	570	819
Net periodic pension cost (benefit)	$ 1,414	$ 1,616	$ 4,213	$ 4,848

The amount of gains or losses recognized in net periodic benefit cost.

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- Definition

The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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- Definition

Amount of contributions made by the employer to defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
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- Definition

Amount of the employer's best estimate of contributions expected to be paid to the plan in the current fiscal period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512171

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

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