Pension and Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Benefits [Abstract]

Schedule of Net Funded Status

The accompanying balance sheets reflect the funded status of the Company’s defined benefit pension plans at December 31, 2017 and 2016, respectively. Reconciliations of the obligations and funded status of the plans follow:

	2017									2016
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Benefit obligation, January 1	$	389,613		$	104,339		$	493,952		$	385,629		$	75,406		$	461,035
Service cost	3,931			2,124			6,055			3,892			1,503			5,395
Interest cost	17,151			1,668			18,819			17,523			1,971			19,494
Amendments	1,233			27			1,260			2,405			(174		)	2,231
Actuarial loss (gain)	28,350			(4,397		)	23,953			6,661			10,814			17,475
Benefits paid	(24,909		)	(4,240		)	(29,149		)	(26,497		)	(4,691		)	(31,188		)
Transfers in	—			2,743			2,743			—			25,968			25,968
Plan curtailments	—			(7,030		)	(7,030		)	—			—			—
Plan settlements	—			(21,074		)	(21,074		)	—			—			—
Participant contributions	—			1,355			1,355			—			1,444			1,444
Foreign exchange rate changes	—			7,226			7,226			—			(7,902		)	(7,902		)
Benefit obligation, December 31	415,369			82,741			498,110			389,613			104,339			493,952
Fair value of plan assets, January 1	331,260			85,652			416,912			326,829			68,553			395,382
Actual return on plan assets	56,131			6,150			62,281			13,051			7,276			20,327
Company contributions	12,896			2,027			14,923			17,877			2,224			20,101
Participant contributions	—			1,355			1,355			—			1,444			1,444
Benefits paid	(24,909		)	(4,240		)	(29,149		)	(26,497		)	(4,691		)	(31,188		)
Plan settlements	—			(20,857		)	(20,857		)	—			—			—
Transfers in	—			2,743			2,743			—			18,320			18,320
Foreign exchange rate changes	—			6,230			6,230			—			(7,474		)	(7,474		)
Fair value of plan assets, December 31	375,378			79,060			454,438			331,260			85,652			416,912
Underfunded status, December 31	$	(39,991	)	$	(3,681	)	$	(43,672	)	$	(58,353	)	$	(18,687	)	$	(77,040	)

The accompanying balance sheets reflect the underfunded status of the Company’s other postretirement benefit plans at December 31, 2017 and 2016. Reconciliations of the obligations and underfunded status of the plans follow:

	2017			2016
Benefit obligation, January 1	$	36,853		$	41,706
Service cost	83			122
Interest cost	1,561			1,766
Actuarial loss (gain)	3,806			(3,495		)
Benefits paid	(7,251		)	(5,621		)
Participant contributions	2,209			2,281
Foreign exchange rate changes	309			94
Benefit obligation, December 31	37,570			36,853
Fair value of plan assets, January 1	—			—
Company contributions	5,042			3,340
Participant contributions	2,209			2,281
Benefits paid	(7,251		)	(5,621		)
Fair value of plan assets, December 31	—			—
Underfunded status, December 31	$	37,570		$	36,853

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets

Projected benefit obligations related to pension plans with benefit obligations in excess of plan assets follow:

	2017						2016
	U.S.		Non-U.S.		Total		U.S.		Non-U.S.		Total
Projected benefit obligation	$	311,320	$	40,931	$	352,251	$	389,613	$	61,060	$	450,673
Fair value of plan assets	267,087		26,205		293,292		331,260		39,356		370,616

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets

Information related to pension plans with accumulated benefit obligations in excess of plan assets follows:

	2017						2016
	U.S.		Non-U.S.		Total		U.S.		Non-U.S.		Total
Projected benefit obligation	$	40,572	$	40,931	$	81,503	$	389,613	$	61,014	$	450,627
Accumulated benefit obligation	40,090		40,877		80,967		378,431		59,568		437,999
Fair value of plan assets	4,797		26,205		31,002		331,260		39,356		370,616

Schedule of Amounts Recognized in Balance Sheet

Amounts related to other postretirement benefits recognized in the accompanying balance sheets consist of:

	2017			2016
Accrued liabilities	$	5,064		$	5,081
Accrued retirement benefits	32,506			31,772
Accumulated other non-owner changes to equity, net	(5,838		)	(3,582		)

Amounts related to pensions recognized in the accompanying balance sheets consist of:

	2017									2016
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Other assets	$	4,242		$	11,045		$	15,287		$	—		$	3,017		$	3,017
Accrued liabilities	2,823			407			3,230			2,813			367			3,180
Accrued retirement benefits	41,410			14,319			55,729			55,540			21,337			76,877
Accumulated other non-owner changes to equity, net	(84,990		)	(13,016		)	(98,006		)	(91,530		)	(19,458		)	(110,988		)

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

Amounts related to other postretirement benefits recognized in accumulated other non-owner changes to equity, net of tax, at December 31, 2017 and 2016 consist of:

	2017			2016
Net actuarial loss	$	(5,746	)	$	(3,532	)
Prior service loss	(92		)	(50		)
	$	(5,838	)	$	(3,582	)

Amounts related to pensions recognized in accumulated other non-owner changes to equity, net of tax, at December 31, 2017 and 2016, respectively, consist of:

	2017									2016
	U.S.			Non-U.S.			Total			U.S.			Non-U.S.			Total
Net actuarial loss	$	(82,736	)	$	(13,237	)	$	(95,973	)	$	(89,772	)	$	(19,822	)	$	(109,594	)
Prior service costs	(2,254		)	221			(2,033		)	(1,758		)	364			(1,394		)
	$	(84,990	)	$	(13,016	)	$	(98,006	)	$	(91,530	)	$	(19,458	)	$	(110,988	)

The sources of changes in accumulated other non-owner changes to equity, net, during 2017 were:

	Pension			Other Postretirement Benefits
Prior service cost	$	(800	)	$	—
Net (loss) gain	7,787			(2,392		)
Amortization of prior service (credits) costs	117			(43		)
Amortization of actuarial loss	7,140			170
Foreign exchange rate changes	(1,262		)	9
	$	12,982		$	(2,256	)

Schedule of Assumptions Used, Benefit Obligation

Weighted-average assumptions used to determine benefit obligations as of December 31, are:

	2017		2016
U.S. plans:
Discount rate	3.90	%	4.50	%
Increase in compensation	2.56	%	2.56	%
Non-U.S. plans:
Discount rate	1.90	%	1.60	%
Increase in compensation	2.17	%	2.29	%

Schedule of Allocation of Plan Assets

The fair values of the Company’s pension plan assets at December 31, 2017 and 2016, by asset category are as follows:

			Fair Value Measurements Using
Asset Category	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
December 31, 2017
Cash and short-term investments	$	10,731	$	10,731	$	—	$	—
Equity securities:
U.S. large-cap	46,786		—		46,786		—
U.S. mid-cap	15,576		15,576		—		—
U.S. small-cap	16,157		16,157		—		—
International equities	159,803		—		159,803		—
Global equity	51,945		51,945		—		—
Fixed income securities:
U.S. bond funds	109,033		—		109,033		—
International bonds	41,742		—		41,742		—
Other	2,665		—		—		2,665
	$	454,438	$	94,409	$	357,364	$	2,665
December 31, 2016
Cash and short-term investments	3,207		3,207		—		—
Equity securities:
U.S. large-cap	39,162		—		39,162		—
U.S. mid-cap	12,724		12,724		—		—
U.S. small-cap	19,551		19,551		—		—
International equities	135,514		—		135,514		—
Global equity	47,445		47,445		—		—
Fixed income securities:
U.S. bond funds	103,399		—		103,399		—
International bonds	53,783		—		53,783		—
Other	2,127		—		—		2,127
	$	416,912	$	82,927	$	331,858	$	2,127

Schedule of Expected Benefit Payments

The following are the estimated future net benefit payments, which include future service, over the next 10 years:

	Pensions		Other Postretirement Benefits
2018	$	29,261	$	3,653
2019	29,243		3,485
2020	29,086		3,204
2021	29,205		3,014
2022	29,378		2,848
Years 2023-2027	144,074		11,722
Total	$	290,247	$	27,926

Schedule of Net Benefit Costs

Pension and other postretirement benefit costs consist of the following:

	Pensions									Other Postretirement Benefits
	2017			2016			2015			2017			2016			2015
Service cost	$	6,055		$	5,395		$	5,508		$	83		$	122		$	145
Interest cost	18,819			19,494			20,019			1,561			1,766			1,836
Expected return on plan assets	(28,082		)	(30,302		)	(32,404		)	—			—			—
Amortization of prior service cost (credit)	446			210			305			(68		)	(373		)	(564		)
Recognized losses	10,557			10,791			15,004			276			535			1,011
Curtailment gain	(7,217		)	—			—			—			—			—
Settlement (gain) loss	(119		)	—			9,939			—			—			—
Net periodic benefit cost	$	459		$	5,588		$	18,371		$	1,852		$	2,050		$	2,428

Schedule of Assumptions Used, Net Benefit Expense

Weighted-average assumptions used to determine net periodic benefit cost for years ended December 31, are:

	2017		2016		2015
U.S. plans:
Discount rate	4.50	%	4.65	%	4.25	%
Long-term rate of return	7.75	%	8.25	%	8.25	%
Increase in compensation	2.56	%	3.71	%	3.71	%
Non-U.S. plans:
Discount rate	1.60	%	2.80	%	2.74	%
Long-term rate of return	3.59	%	4.73	%	5.00	%
Increase in compensation	2.29	%	2.71	%	2.72	%

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one percentage point change in the assumed health care cost trend rate would have the following effects:

	One Percentage Point Increase		One Percentage Point Decrease
Effect on postretirement benefit obligation	$	261	$	(242	)
Effect on postretirement benefit cost	11		(10		)

Schedule of Multiemployer Plans

Contributions related to the individually insignificant multi-employer plans, as disclosure is required pursuant to the applicable accounting standards, are as follows:

	Contributions by the Company
Pension Fund:	2017		2016		2015
Swedish Pension Plan	739		$	673	$	343
Total Contributions	$	739	$	673	$	343