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Retirement Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Assumptions used in accounting for the defined benefit plan
The assumptions used in accounting for the defined benefit plans were as follows for the years ended December 31:
 
2016
 
2015
 
2014
U.S. Plans
 
 
 
 
 
Weighted average discount rates for pension benefit obligation
3.60% - 4.00%

 
3.70% - 4.20%

 
3.45% - 3.95%

Weighted average discount rates for net periodic benefit cost
3.70% - 4.20%

 
3.45% - 3.95%

 
4.00% - 4.75%

Expected long-term rate of return on assets for net periodic benefit cost
7.50
%
 
7.75
%
 
7.75
%
Non-U.S. Plan
 
 
 
 
 
Weighted average discount rates for pension benefit obligation
3.75
%
 
4.00
%
 
3.75
%
Weighted average discount rates for net periodic benefit cost
4.00
%
 
3.75
%
 
4.50
%
Rate of increase in compensation levels
3.50
%
 
3.50
%
 
3.50
%
Expected long-term rate of return on assets for net periodic benefit cost
5.50
%
 
5.75
%
 
6.00
%
The assumptions used in accounting for the postretirement health care plans are set forth below for the years ended December 31:
 
2016
 
2015
 
2014
Weighted average discount rates for benefit obligation
3.40
%
 
3.40
%
 
3.25
%
Weighted average discount rates for net periodic benefit cost
3.25
%
 
3.25
%
 
3.85
%
Health care cost trend rate assumed for next year
7.3
%
 
7.3
%
 
7.0
%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)
5.0
%
 
5.0
%
 
5.0
%
Year that the rate reaches the ultimate trend rate
2025

 
2025

 
2022
Net periodic benefit income and expense for the defined benefit plan
Set forth below is a detail of the net periodic pension expense (income) for the defined benefit plans for the years ended December 31:
 
2016
 
2015
 
2014
U.S. Plans
 
 
 
 
 
Interest cost
$
2,632

 
$
2,627

 
$
2,754

Expected return on plan assets
(4,860
)
 
(4,892
)
 
(4,689
)
Amortization of actuarial loss
910

 
1,059

 
837

Amortization of prior service cost
58

 
50

 
32

     Settlements
90

 
—

 
—

Net periodic pension income
$
(1,170
)
 
$
(1,156
)
 
$
(1,066
)
 
 
 
 
 
 
Non-U.S. Plan
 
 
 
 
 
Interest cost
$
144

 
$
152

 
$
196

Expected return on plan assets
(248
)
 
(272
)
 
(296
)
Amortization of actuarial loss
13

 
146

 
112

Settlements
—

 
37

 
—

Net periodic pension (income) expense
$
(91
)
 
$
63

 
$
12

Set forth below is a detail of the net periodic benefit expense for the postretirement health care plans for the years ended December 31:
 
2016
 
2015
 
2014
Service cost
$
70

 
$
70

 
$
70

Interest cost
116

 
113

 
118

Amortization of actuarial loss
132

 
91

 
66

Amortization of prior service credit
(107
)
 
(107
)
 
(107
)
Net periodic benefit expense
$
211

 
$
167

 
$
147
Changes in plan assets and benefit obligations recognized in comprehensive income (loss)
Set forth below is a detail of other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) for the years ended December 31:
 
2016
 
2015
 
2014
Current year actuarial (gain) loss
$
(25
)
 
$
226

 
$
613

Amortization of actuarial loss
(132
)
 
(91
)
 
(66
)
Amortization of prior service credit
107

 
107

 
107

Total recognized in other comprehensive income
$
(50
)
 
$
242

 
$
654

Set forth below is detail of other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) for the years ended December 31:
 
2016
 
2015
 
2014
U.S. Plans
 
 
 
 
 
Current year actuarial loss
$
2,816

 
$
2,181

 
$
8,896

Amortization of actuarial loss
(910
)
 
(1,059
)
 
(837
)
Current year prior service cost
—

 
147

 
360

Amortization of prior service cost
(58
)
 
(50
)
 
(32
)
Settlements
(90
)
 
—

 
—

Total recognized in other comprehensive loss
$
1,758

 
$
1,219

 
$
8,387

Non-U.S. Plan
 
 
 
 
 
Current year actuarial loss (gain)
$
318

 
$
(128
)
 
$
(94
)
Amortization of actuarial loss
(13
)
 
(146
)
 
(112
)
Settlements
—

 
(37
)
 
—

Total recognized in other comprehensive loss (income)
$
305

 
$
(311
)
 
$
(206
)
Changes in benefit obligations during the year and funded status of defined benefit plan
The following sets forth the changes in benefit obligations during the year and the funded status of the postretirement health care at December 31:
 
2016
 
2015
Change in benefit obligation
 
 
 
Benefit obligation at beginning of year
$
3,466

 
$
3,534

Service cost
70

 
70

Interest cost
116

 
113

Actuarial loss
(25
)
 
226

Benefits paid
(416
)
 
(477
)
Benefit obligation at end of year
$
3,211

 
$
3,466

Funded status at end of year
$
(3,211
)
 
$
(3,466
)
Amounts recognized in the balance sheets consist of:
 
 
 
Current liabilities
$
(294
)
 
$
(262
)
Noncurrent liabilities
(2,917
)
 
(3,204
)
 
$
(3,211
)
 
$
(3,466
)
Components of accumulated other comprehensive loss (income) consist of:
 
 
 
Actuarial loss
$
983

 
$
1,140

Prior service credit
(95
)
 
(202
)
Deferred taxes
284

 
263

 
$
1,172

 
$
1,201

The following table sets forth the changes in the benefit obligation and the plan assets during the year and the funded status of the defined benefit plans at December 31:
 
2016
 
2015
 
U.S.
Plans
 
Non-U.S.
Plan
 
U.S. Plans
 
Non-U.S.
Plan
Change in benefit obligation
 
 
 
 
 
 
 
Projected benefit obligation at beginning of year
$
68,490

 
$
3,519

 
$
72,839

 
$
4,549

Interest cost
2,632

 
144

 
2,627

 
152

Actuarial loss (gain)
2,145

 
430

 
(2,884
)
 
(146
)
Benefits paid
(3,978
)
 
(176
)
 
(4,393
)
 
(146
)
Foreign currency exchange rate changes
—

 
104

 
—

 
(712
)
Settlements
(18
)
 
—

 
—

 
(178
)
Intercompany transfers
(303
)
 
—

 
301

 
—

Projected benefit obligation at end of year
$
68,968

 
$
4,021

 
$
68,490

 
$
3,519

Accumulated benefit obligation at end of year
$
68,968

 
$
4,021

 
$
68,490

 
$
3,519

Change in plan assets
 
 
 
 
 
 
 
Fair value of plan assets at beginning of year
$
64,893

 
$
4,383

 
$
68,675

 
$
5,286

Actual return on plan assets
682

 
356

 
110

 
256

Employer contributions
755

 
17

 
424

 
17

Benefits paid
(3,978
)
 
(176
)
 
(4,393
)
 
(146
)
Foreign currency exchange rate changes
—

 
132

 
—

 
(852
)
Settlements
(18
)
 
—

 
—

 
(178
)
Intercompany transfers
(304
)
 
—

 
77

 
—

Fair value of plan assets at end of year
$
62,030

 
$
4,712

 
$
64,893

 
$
4,383

Funded status at end of year
$
(6,938
)
 
$
691

 
$
(3,597
)
 
$
864

Amounts recognized in the balance sheets consist of:
 
 
 
 
 
 
 
Noncurrent assets
$
5,140

 
$
691

 
$
4,261

 
$
864

Current liabilities
(721
)
 
—

 
(1,016
)
 
—

Non-current liabilities
(11,357
)
 
—

 
(6,842
)
 
—

 
$
(6,938
)
 
$
691

 
$
(3,597
)
 
$
864

Components of accumulated other comprehensive loss (income) consist of:
 
 
 
 
 
 
 
Actuarial loss
$
29,857

 
$
1,029

 
$
28,041

 
$
737

Prior service cost
996

 
—

 
1,054

 
—

Deferred taxes
(11,957
)
 
(327
)
 
(11,324
)
 
(250
)
     Currency differences
—

 
(89
)
 
—

 
(102
)
 
$
18,896

 
$
613

 
$
17,771

 
$
385
Future benefit payments
Future pension benefit payments expected to be paid from assets of the pension plans are:
 
U.S. Plans
 
Non-U.S. Plan
2017
$
4,761

 
$
172

2018
4,564

 
170

2019
4,552

 
177

2020
4,806

 
187

2021
4,694

 
199

2022 - 2026
22,831

 
1,187

 
$
46,208

 
$
2,092

Future postretirement health care benefit payments expected to be paid are:
2017
$
294

2018
306

2019
317

2020
370

2021
354

2022 - 2026
1,358

 
$
2,999
Actual allocation percentage and target allocation percentage for pension plan assets
The following is the actual allocation percentage and target allocation percentage for the U.S. pension plan assets at December 31:
 
2016
Actual
Allocation
 
2015
Actual
Allocation
 
Target Allocation
Range
U.S. equity securities
45.8
%
 
52.1
%
 
36.0% - 54.0%
Non-U.S. equity securities
19.7
%
 
12.3
%
 
16.0% - 24.0%
Fixed income securities
33.7
%
 
35.1
%
 
30.0% - 40.0%
Money market
0.8
%
 
0.5
%
 
0.0% - 10.0%
The following is the actual allocation percentage and target allocation percentage for the Non-U.S. pension plan assets at December 31:
 
2016
Actual
Allocation
 
2015
Actual
Allocation
 
Target Allocation
Range
Canadian equity securities
32.7
%
 
28.9
%
 
25.0% - 35.0%
Non-Canadian equity securities
32.1
%
 
30.6
%
 
25.0% - 35.0%
Fixed income securities
35.2
%
 
40.5
%
 
30.0% - 50.0%
Cash and cash equivalents
—
%
 
—
%
 
0.0% - 5.0%
Fair value of pension plan assets
Following are the values as of December 31:
 
Level 1
 
Level 2
 
2016
 
2015
 
2016
 
2015
U.S. equity securities
$
28,428

 
$
33,799

 
$
777

 
$
670

Non-U.S. equity securities
12,197

 
8,003

 
2,275

 
1,939

Fixed income securities
20,930

 
22,787

 
1,660

 
1,774

Money market
475

 
304

 
—

 
—

Total
$
62,030

 
$
64,893

 
$
4,712

 
$
4,383
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 rates would have the following effects at December 31, 2016:
 
1-Percentage-Point
Increase
 
1-Percentage-Point
Decrease
Effect on total of service and interest cost
$
16

 
$
(14
)
Effect on postretirement benefit obligation
$
223

 
$
(208
)