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Pensions and Other Post-retirement Benefits (Tables)
 12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
Schedule Of Defined Benefit Pension Plans And Other Postretirement Benefits Plan
Information pertaining to defined benefit pension plans and other post-retirement benefits plans is provided in the following table:
 
Pension Benefits
 
Other Benefits
(In thousands)
2017
 
2016
 
2017
 
2016
Change in Benefit Obligations
 
 
 
 
 
 
 
Benefit obligations at January 1
$
503,997

 
$
491,180

 
$
23,680

 
$
22,974

Service cost
11,023

 
10,417

 
403

 
426

Interest cost
18,450

 
18,752

 
882

 
946

Participant contributions
100

 
100

 
264

 
222

Plan amendments
—

 
(1,092
)
 
(1,694
)
 
(400
)
Actuarial losses
27,967

 
9,123

 
1,465

 
1,285

Benefits paid
(28,953
)
 
(19,550
)
 
(2,973
)
 
(1,773
)
Curtailments
—

 
(163
)
 
—

 
—

Settlements
(573
)
 
(381
)
 
—

 
—

Special termination benefits
11,384

 
—

 
—

 
—

Currency translation
16,990

 
(4,389
)
 
—

 
—

Benefit obligations at December 31
560,385

 
503,997

 
22,027

 
23,680

Change in Plan Assets
 
 
 
 
 
 
 
Fair value of plan assets at January 1
433,262

 
419,088

 
—

 
—

Actual return on plan assets
81,192

 
31,418

 
—

 
—

Employer contributions
4,094

 
3,878

 
2,709

 
1,551

Participant contributions
100

 
100

 
264

 
222

Settlements
(573
)
 
(381
)
 
—

 
—

Benefits paid
(28,953
)
 
(19,550
)
 
(2,973
)
 
(1,773
)
Administrative Expenses Paid
(222
)
 
—

 
—

 
—

Currency translation
3,777

 
(1,291
)
 
—

 
—

Fair value of plan assets at December 31
492,677

 
433,262

 
—

 
—

Funded Status
 
 
 
 
 
 
 
Funded status at December 31
(67,708
)
 
(70,735
)
 
(22,027
)
 
(23,680
)
Unrecognized transition losses
6

 
8

 
—

 
—

Unrecognized prior service credit
(764
)
 
(646
)
 
(2,328
)
 
(1,505
)
Unrecognized net actuarial losses
162,032

 
187,738

 
5,007

 
3,643

Net amount recognized
93,566

 
116,365

 
(19,348
)
 
(21,542
)
Amounts Recognized in the Balance Sheet
 
 
 
 
 
 
 
Noncurrent assets
83,060

 
62,916

 
—

 
—

Current liabilities
(5,126
)
 
(4,620
)
 
(1,584
)
 
(1,638
)
Noncurrent liabilities
(145,642
)
 
(129,031
)
 
(20,443
)
 
(22,042
)
Net amount recognized
(67,708
)
 
(70,735
)
 
(22,027
)
 
(23,680
)
Amounts Recognized in Accumulated Other Comprehensive Loss
 
 
 
 
 
 
 
Net actuarial losses
162,032

 
187,738

 
5,007

 
3,643

Prior service credit
(764
)
 
(646
)
 
(2,328
)
 
(1,505
)
Unrecognized net initial obligation
6

 
8

 
—

 
—

Total (before tax effects)
161,274

 
187,100

 
2,679

 
2,138

Accumulated Benefit Obligations for all Defined Benefit Plans
525,385

 
465,448

 
—

 
—
Components Of Net Periodic Benefit (Credit) Cost
 
Pension Benefits
 
Other Benefits
(In thousands)
2017
 
2016
 
2015
 
2017
 
2016
 
2015
Components of Net Periodic Benefit Cost
 
 
 
 
 
 
 
 
 
 
 
Service cost
$
11,023

 
$
10,417

 
$
11,517

 
$
403

 
$
426

 
$
444

Interest cost
18,450

 
18,752

 
18,314

 
882

 
946

 
863

Expected return on plan assets
(35,417
)
 
(34,751
)
 
(34,130
)
 
—

 
—

 
—

Amortization of transition amounts
2

 
2

 
2

 
—

 
—

 
—

Amortization of prior service (credit) cost
(19
)
 
(14
)
 
66

 
(307
)
 
(419
)
 
(335
)
Recognized net actuarial losses
12,955

 
11,921

 
15,545

 
100

 
68

 
27

Settlement/curtailment loss (credit)
148

 
5

 
641

 
(562
)
 
—

 
—

Special termination charge
11,384

 
—

 
—

 
—

 
—

 
—

Net periodic benefit cost
$
18,526

 
$
6,332

 
$
11,955

 
$
516

 
$
1,021

 
$
999
Schedule Of Amounts Included In Accumulated Other Comprehensive Income Expected To Be Recognized In Net Periodic Benefit Costs
Amounts included in accumulated other comprehensive income expected to be recognized in 2018 net periodic benefit costs.
(In thousands)
Pension Benefits
 
Other Benefits
Loss recognition
$
12,971

 
$
305

Prior service credit recognition
(23
)
 
(405
)
Transition obligation recognition
1

 
—
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]
Information for pension plans with an accumulated benefit obligation in excess of plan assets.
(In thousands)
2017
 
2016
Aggregate accumulated benefit obligations (ABO)
$
169,065

 
$
147,531

Aggregate projected benefit obligations (PBO)
182,159

 
160,543

Aggregate fair value of plan assets
31,471

 
26,986
Schedule Of Assumptions Used To Determine Benefit Obligations And Net Periodic Benefit Cost
 
Pension Benefits
 
Other Benefits
 
2017
 
2016
 
2017
 
2016
Assumptions used to determine benefit obligations
 
 
 
 
 
 
 
Average discount rate
3.34
%
 
3.67
%
 
3.57
%
 
4.05
%
Rate of compensation increase
3.00
%
 
2.99
%
 
—

 
—

Assumptions used to determine net periodic benefit cost
 
 
 
 
 
 
 
Average discount rate
3.67
%
 
3.92
%
 
4.05
%
 
4.20
%
Expected return on plan assets
8.04
%
 
8.18
%
 
—

 
—

Rate of compensation increase
2.99
%
 
3.06
%
 
—

 
—
Schedule Of Expected Return On Assets For Net Periodic Pension Cost
 
Pension Plan Assets at
December 31,
 
2017
 
2016
Equity securities
57
%
 
70
%
Fixed income securities
26

 
20

Pooled investment funds
12

 
5

Insurance contracts
3

 
4

Cash and cash equivalents
2

 
1

Total
100
%
 
100
%
Summary Of Pension Plan Assets Measured At Fair Value On A Recurring Basis By Fair Value Hierarchy
 
 
 
 
 
Fair Value
(In thousands)
Total
 
NAV
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Equity securities
$
278,606

 
$
64,840

 
$
213,766

 
$
—

 
$
—

Fixed income securities
127,128

 
—

 
40,778

 
86,350

 
—

Pooled investment funds
60,014

 
60,014

 
—

 
—

 
—

Insurance contracts
17,834

 
—

 
—

 
—

 
17,834

Cash and cash equivalents
9,095

 
7,974

 
1,121

 
—

 
—

Total
$
492,677

 
$
132,828

 
$
255,665

 
$
86,350

 
$
17,834

The fair values of the Company's pension plan assets at December 31, 2016 were as follows:
 
 
 
 
 
Fair Value
(In thousands)
Total
 
NAV
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Equity securities
$
304,460

 
$
62,094

 
$
242,161

 
$
205

 
$
—

Fixed income securities
87,776

 
—

 
25,109

 
62,667

 
—

Pooled investment funds
20,156

 
20,156

 
—

 
—

 
—

Insurance contracts
14,948

 
—

 
—

 
—

 
14,948

Cash and cash equivalents
5,922

 
5,231

 
691

 
—

 
—

Total
$
433,262

 
$
87,481

 
$
267,961

 
$
62,872

 
$
14,948
Schedule Of Reconciliation Of Level 3 Assets
The following table presents a reconciliation of Level 3 assets:
(In thousands)
Insurance
Contracts
Balance January 1, 2016
$
13,681

Net realized and unrealized gains included in earnings
975

Net purchases, issuances and settlements
292

Balance December 31, 2016
14,948

Net realized and unrealized gains included in earnings
2,741

Net purchases, issuances and settlements
145

Balance December 31, 2017
$
17,834