Retirement Plans (Details 3) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of defined benefit plan assets, beginning balance	$ 202,981
Fair value of defined benefit plan assets, ending balance	204,570	$ 202,981
U.S. Pension Plans
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of defined benefit plan assets, beginning balance	135,887	128,516
Actual return on defined benefit plan assets	(486)	7,366
Company contributions	4,279	3,592
Benefits paid	(3,552)	(3,587)
Fair value of defined benefit plan assets, ending balance	136,128	135,887
U.S. Retiree Healthcare Plan
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of defined benefit plan assets, beginning balance	7,526	6,616
Actual return on defined benefit plan assets	71	533
Company contributions	448	392
Employee contributions	864	832
Benefits paid	(908)	(847)
Fair value of defined benefit plan assets, ending balance	8,001	7,526
Non-U.S. Pension Plans
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of defined benefit plan assets, beginning balance	59,568	40,820
Actual return on defined benefit plan assets	611	4,170
Company contributions	7,082	24,216
Employee contributions	573	592
Plan settlements	(577)	(2,766)
Benefits paid	(2,503)	(1,195)
Foreign currency impact on plan assets	(4,313)	(6,269)
Fair value of defined benefit plan assets, ending balance	$ 60,441	59,568
Non-U.S. Pension Plans \| One-Time Contribution to Pension Plans [Member]
Change in Fair Value of Plan Assets [Roll Forward]
Company contributions		$ 21,000

The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Postretirement Benefit Cost)
-URI http://asc.fasb.org/extlink&oid=6504192

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Actual Return on Plan Assets (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6504226

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- Definition

The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Postretirement Benefits
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

+ References

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

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- Definition

The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts.

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