Retirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2015

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, 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.

Weighted-average asset allocations by asset category of the U.S. and U.K. Pension Plans as of December 31, 2014 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	$	486	$	486	$	—	$	—
Mutual Funds:
U.S. Large-Cap	12,955		12,955		—		—
U.S. Small-Cap	4,004		4,004		—		—
International Equities	3,788		3,788		—		—
Fixed-Income Domestic	30,652		30,652		—		—
Investment Account held by Pension Plan⁽¹⁾	9,989		—		—		9,989
Total	$	61,874	$	51,885	$	—	$	9,989


⁽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:



	2015			2014
Fair value at beginning of year	$	9,989		$	9,733
Purchases, sales, issuances and settlements, net	52			(96		)
Net gain	1,232			974
Foreign currency	(582		)	(622		)
Fair value at end of year	$	10,691		$	9,989

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
	2015		2014		2015		2014		2015		2014
Discount rate	4.08	%	3.76	%	3.59	%	3.38	%	3.70	%	3.39	%
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
	2015		2014		2013		2015		2014		2013		2015		2014		2013
Discount rate	3.76	%	4.63	%	3.79	%	3.38	%	4.33	%	4.41	%	3.39	%	4.10	%	3.27	%
Expected long-term rate of return on plan assets	5.20	%	5.70	%	6.50	%	4.40	%	5.60	%	4.70	%	—		—		—
Rate of compensation increase	3.00	%	3.00	%	3.00	%	3.50	%	4.50	%	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:



	2015		2014
U.S. Pension Plans	$	41,537	$	45,695
U.K. Pension Plan	9,720		10,658
German Pension Plan	870		1,027

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:



	2015		2014
Accumulated benefit obligation	$	2,616	$	13,872
Fair value of plan assets	—		9,989

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:



	2015		2014
Projected benefit obligation	$	2,616	$	14,207
Fair value of plan assets	—		9,989

Assumed healthcare cost trend rates

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



	2015		2014
Healthcare cost trend rate assumption for the next year	6.76	%	7.50	%
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	$	(37	)	$	42
Effect on postretirement benefit obligation	$	(803	)	$	910

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
	2015			2014			2015			2014			2015			2014
Change in benefit obligation:
Benefit obligation at beginning of year	$	47,027		$	43,653		$	12,014		$	11,238		$	13,292		$	13,186
Service cost	480			493			153			155			96			128
Interest cost	1,711			1,964			396			476			393			497
Plan participants' contributions	—			—			20			21			—			—
Actuarial (gain) loss	(3,352		)	5,907			(718		)	1,421			(1,618		)	591
Foreign exchange	—			—			(681		)	(815		)	—			—
Benefits paid	(1,944		)	(1,706		)	(301		)	(482		)	(1,019		)	(1,110		)
Settlement	(2,148		)	(3,284		)	—			—			—			—
Benefit obligation at end of year	$	41,774		$	47,027		$	10,883		$	12,014		$	11,144		$	13,292
Change in fair value of plan assets and net accrued liabilities:
Fair value of plan assets at beginning of year	$	51,885		$	52,397		$	9,989		$	9,733		$	—		$	—
Actual return on plan assets	(933		)	4,236			1,232			974			—			—
Employer contributions	341			242			333			365			1,019			1,110
Plan participants' contributions	—			—			20			21			—			—
Foreign exchange	—			—			(582		)	(622		)	—			—
Benefits paid	(1,944		)	(1,706		)	(301		)	(482		)	(1,019		)	(1,110		)
Settlement	(2,148		)	(3,284		)	—			—			—			—
Fair value of plan assets at end of year	47,201			51,885			10,691			9,989			—			—
Funded status at end of year	$	5,427		$	4,858		$	(192	)	$	(2,025	)	$	(11,144	)	$	(13,292	)
Amounts recognized in the Consolidated Balance Sheets consist of:
Noncurrent Other Assets	$	7,173		$	7,051		$	678		$	—		$	—		$	—
Current Liabilities	(243		)	(185		)	(33		)	(37		)	(835		)	(947		)
Long-Term Liabilities	(1,503		)	(2,008		)	(837		)	(1,988		)	(10,309		)	(12,345		)
Net accrued asset (liability)	$	5,427		$	4,858		$	(192	)	$	(2,025	)	$	(11,144	)	$	(13,292	)
Amounts recognized in Accumulated Other Comprehensive Loss consist of:
Prior service cost	$	(42	)	$	(109	)	$	—		$	—		$	—		$	—
Net actuarial loss	(5,127		)	(5,993		)	(111		)	(1,682		)	(560		)	(2,178		)
Accumulated Other Comprehensive Loss	$	(5,169	)	$	(6,102	)	$	(111	)	$	(1,682	)	$	(560	)	$	(2,178	)

Components of the net periodic benefit cost

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



	U.S. Pension Benefits									Non-U.S. Pension Benefits									Postretirement Medical Benefits
	2015			2014			2013			2015			2014			2013			2015		2014			2013
Service cost	$	480		$	493		$	690		$	153		$	155		$	142		$	96	$	128		$	154
Interest cost	1,711			1,964			1,803			396			476			422			393		497			443
Expected return on plan assets	(2,613		)	(2,683		)	(2,911		)	(433		)	(539		)	(402		)	—		—			—
Amortization of net actuarial loss	835			147			1,751			54			9			9			—		—			201
Amortization of prior service cost (credit)	42			43			73			—			—			—			—		(6		)	(103		)
Foreign currency	—			—			—			(35		)	(61		)	21			—		—			—
Curtailment charge	25			—			—			—			—			—			—		—			—
Settlement charge	225			356			—			—			—			—			—		—			—
Net periodic benefit cost	$	705		$	320		$	1,406		$	135		$	40		$	192		$	489	$	619		$	695

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
	2015			2014			2013			2015			2014			2013			2015			2014		2013
Net actuarial loss (gain)	$	195		$	4,353		$	(9,817	)	$	(1,517	)	$	987		$	467		$	(1,618	)	$	591	$	(1,001	)
Amortization of prior service (cost) credit	(67		)	(43		)	(73		)	—			—			—			—			6		103
Amortization of net actuarial loss	(1,060		)	(503		)	(1,751		)	(54		)	(9		)	(9		)	—			—		(201		)
Total recognized in other comprehensive (income) loss	$	(932	)	$	3,807		$	(11,641	)	$	(1,571	)	$	978		$	458		$	(1,618	)	$	597	$	(1,099	)
Total recognized in net periodic (cost) benefit and other comprehensive (income) loss	$	(227	)	$	4,127		$	(10,235	)	$	(1,436	)	$	1,018		$	650		$	(1,129	)	$	1,216	$	(404	)

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
2016	$	2,296	$	225	$	835
2017	2,450		230		890
2018	2,594		238		914
2019	2,573		244		959
2020	2,637		251		1,010
2021 to 2025	13,582		1,377		4,574
Total	$	26,132	$	2,565	$	9,182

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, 2015 and are expected to be recognized as components of net periodic benefit cost during 2016:



	Pension Benefits		Postretirement Medical Benefits
Net actuarial loss	$	64	$	173
Prior service cost	42		—