Retirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]

Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans

Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2016 are as follows:



Asset Category	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents	$	663	$	663	$	—	$	—
Mutual Funds:
U.S. Large-Cap	9,803		9,803		—		—
U.S. Small-Cap	2,584		2,584		—		—
International Equities	2,244		2,244		—		—
Fixed-Income Domestic	4,564		4,564		—		—
Collective Investment Funds	26,531		—		26,531		—
Investment Account held by Pension Plan ⁽¹⁾	9,562		—		—		9,562
Total	$	55,951	$	19,858	$	26,531	$	9,562


⁽¹⁾	This category is comprised of investments in insurance contracts.

Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2015 are as follows:



Asset Category	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and Cash Equivalents	$	954	$	954	$	—	$	—
Mutual Funds:
U.S. Large-Cap	9,194		9,194		—		—
U.S. Small-Cap	2,258		2,258		—		—
International Equities	2,206		2,206		—		—
Fixed-Income Domestic	32,589		32,589		—		—
Investment Account held by Pension Plan⁽¹⁾	10,691		—		—		10,691
Total	$	57,892	$	47,201	$	—	$	10,691


⁽¹⁾	This category is comprised of investments in insurance contracts.

Reconciliation of beginning and ending balances of Level 3 plan assets

A reconciliation of the beginning and ending balances of the Level 3 investments of our U.K. Pension Plan during the years ended are as follows:



	2016			2015
Fair value at beginning of year	$	10,691		$	9,989
Purchases, sales, issuances and settlements, net	7			52
Net gain	674			1,232
Foreign currency	(1,810		)	(582		)
Fair value at end of year	$	9,562		$	10,691

Weighted-average assumptions used to determine benefit obligations and net periodic benefit costs

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



	U.S. Pension Benefits				Non-U.S. Pension Benefits				Postretirement Medical Benefits
	2016		2015		2016		2015		2016		2015
Discount rate	3.92	%	4.08	%	2.64	%	3.59	%	3.58	%	3.70	%
Rate of compensation increase	3.00	%	3.00	%	3.50	%	3.50	%	—		—

Weighted-average assumptions used to determine net periodic benefit costs as of December 31 are as follows:



	U.S. Pension Benefits						Non-U.S. Pension Benefits						Postretirement Medical Benefits
	2016		2015		2014		2016		2015		2014		2016		2015		2014
Discount rate	4.08	%	3.76	%	4.63	%	3.59	%	3.38	%	4.33	%	3.70	%	3.39	%	4.10	%
Expected long-term rate of return on plan assets	5.20	%	5.20	%	5.70	%	4.60	%	4.40	%	5.60	%	—		—		—
Rate of compensation increase	3.00	%	3.00	%	3.00	%	3.50	%	3.50	%	4.50	%	—		—		—

Accumulated benefit obligations for all defined benefit plans

The accumulated benefit obligations as of December 31, for all defined benefit plans are as follows:



	2016		2015
U.S. Pension Plans	$	40,961	$	41,537
U.K. Pension Plan	10,067		9,720
German Pension Plan	871		870

Plans with accumulated benefit obligation in excess of plan assets

Information for our plans with an accumulated benefit obligation in excess of plan assets as of December 31 is as follows:



	2016		2015
Accumulated benefit obligation	$	12,597	$	2,616
Fair value of plan assets	9,562		—

Plans with projected benefit obligations in excess of plan assets

Information for our plans with a projected benefit obligation in excess of plan assets as of December 31 is as follows:



	2016		2015
Projected benefit obligation	$	12,794	$	2,616
Fair value of plan assets	9,562		—

Assumed healthcare cost trend rates

Assumed healthcare cost trend rates as of December 31 are as follows:



	2016		2015
Healthcare cost trend rate assumption for the next year	6.56	%	6.76	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2031		2031

Effect of one-percentage-point change in assumed healthcare cost trends

To illustrate, a one-percentage-point change in assumed healthcare cost trends would have the following effects:



	1-Percentage- Point Decrease			1-Percentage- Point Increase
Effect on total of service and interest cost components	$	(35	)	$	39
Effect on postretirement benefit obligation	$	(751	)	$	850

Changes in benefit obligations and plan assets and funded status

Summaries related to changes in benefit obligations and plan assets and to the funded status of our defined benefit and postretirement medical benefit plans are as follows:



	U.S. Pension Benefits						Non-U.S. Pension Benefits						Postretirement Medical Benefits
	2016			2015			2016			2015			2016			2015
Change in benefit obligation:
Benefit obligation at beginning of year	$	41,774		$	47,027		$	10,883		$	12,014		$	11,144		$	13,292
Service cost	354			480			103			153			76			96
Interest cost	1,659			1,711			358			396			396			393
Plan participants' contributions	—			—			14			20			—			—
Actuarial loss (gain)	690			(3,352		)	1,939			(718		)	6			(1,618		)
Foreign exchange	—			—			(1,852		)	(681		)	—			—
Benefits paid	(3,516		)	(1,944		)	(309		)	(301		)	(1,082		)	(1,019		)
Settlement	—			(2,148		)	—			—			—			—
Benefit obligation at end of year	$	40,961		$	41,774		$	11,136		$	10,883		$	10,540		$	11,144
Change in fair value of plan assets and net accrued liabilities:
Fair value of plan assets at beginning of year	$	47,201		$	51,885		$	10,691		$	9,989		$	—		$	—
Actual return on plan assets	2,457			(933		)	673			1,232			—			—
Employer contributions	247			341			303			333			1,082			1,019
Plan participants' contributions	—			—			14			20			—			—
Foreign exchange	—			—			(1,810		)	(582		)	—			—
Benefits paid	(3,516		)	(1,944		)	(309		)	(301		)	(1,082		)	(1,019		)
Settlement	—			(2,148		)	—			—			—			—
Fair value of plan assets at end of year	46,389			47,201			9,562			10,691			—			—
Funded status at end of year	$	5,428		$	5,427		$	(1,574	)	$	(192	)	$	(10,540	)	$	(11,144	)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent Other Assets	$	7,087		$	7,173		$	—		$	678		$	—		$	—
Current Liabilities	(239		)	(243		)	(30		)	(33		)	(828		)	(835		)
Long-Term Liabilities	(1,420		)	(1,503		)	(1,544		)	(837		)	(9,712		)	(10,309		)
Net accrued asset (liability)	$	5,428		$	5,427		$	(1,574	)	$	(192	)	$	(10,540	)	$	(11,144	)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost	$	—		$	(42	)	$	—		$	—		$	—		$	—
Net actuarial loss	(5,720		)	(5,127		)	(1,802		)	(111		)	(566		)	(560		)
Accumulated Other Comprehensive Loss	$	(5,720	)	$	(5,169	)	$	(1,802	)	$	(111	)	$	(566	)	$	(560	)

Components of the net periodic benefit (credit) cost

The components of the net periodic benefit (credit) cost for the three years ended December 31 were as follows:



	U.S. Pension Benefits									Non-U.S. Pension Benefits									Postretirement Medical Benefits
	2016			2015			2014			2016			2015			2014			2016		2015		2014
Service cost	$	354		$	480		$	493		$	103		$	153		$	155		$	76	$	96	$	128
Interest cost	1,659			1,711			1,964			358			396			476			396		393		497
Expected return on plan assets	(2,400		)	(2,613		)	(2,683		)	(452		)	(433		)	(539		)	—		—		—
Amortization of net actuarial loss	41			835			147			27			54			9			—		—		—
Amortization of prior service cost (credit)	41			42			43			—			—			—			—		—		(6		)
Foreign currency	—			—			—			97			(35		)	(61		)	—		—		—
Curtailment charge	—			25			—			—			—			—			—		—		—
Settlement charge	—			225			356			—			—			—			—		—		—
Net periodic benefit (credit) cost	$	(305	)	$	705		$	320		$	133		$	135		$	40		$	472	$	489	$	619

Changes in accumulated other comprehensive loss

The changes in Accumulated Other Comprehensive Loss for the three years ended December 31 were as follows:



	U.S. Pension Benefits									Non-U.S. Pension Benefits									Postretirement Medical Benefits
	2016			2015			2014			2016			2015			2014			2016		2015			2014
Net actuarial loss (gain)	$	633		$	195		$	4,353		$	1,718		$	(1,517	)	$	987		$	6	$	(1,618	)	$	591
Amortization of prior service (cost) credit	(41		)	(67		)	(43		)	—			—			—			—		—			6
Amortization of net actuarial loss	(41		)	(1,060		)	(503		)	(27		)	(54		)	(9		)	—		—			—
Total recognized in other comprehensive loss (income)	$	551		$	(932	)	$	3,807		$	1,691		$	(1,571	)	$	978		$	6	$	(1,618	)	$	597
Total recognized in net periodic benefit cost and other comprehensive loss (income)	$	246		$	(227	)	$	4,127		$	1,824		$	(1,436	)	$	1,018		$	478	$	(1,129	)	$	1,216

Expected future benefit payments

The following benefit payments, which reflect expected future service, are expected to be paid for our U.S. and Non-U.S. plans:



	U.S. Pension Benefits		Non-U.S. Pension Benefits		Postretirement Medical Benefits
2017	$	2,289	$	215	$	828
2018	2,436		221		887
2019	2,422		228		924
2020	2,499		235		979
2021	2,567		243		882
2022 to 2026	13,130		1,344		4,141
Total	$	25,343	$	2,486	$	8,641

Amounts in accumulated other comprehensive loss to be recognized over next fiscal year

The following amounts are included in Accumulated Other Comprehensive Loss as of December 31, 2016 and are expected to be recognized as components of net periodic benefit cost during 2017:



	Pension Benefits		Postretirement Medical Benefits
Net actuarial loss	$	111	$	—
Prior service cost	—		—