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Pension and Severance Benefits (Tables)
 12 Months Ended
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]  
Schedule of Net Benefit Costs
Pension and severance expense consists of the following:
 
Domestic Plans
(In thousands)
2012
 
2011
 
2010
Defined benefit and severance plans:
 
 
 
 
 
Service cost
$
363

 
$
447

 
$
466

Interest on projected benefit obligation
1,086

 
1,237

 
1,327

Expected return on plan assets
(1,477
)
 
(1,685
)
 
(1,668
)
Recognized actuarial loss
374

 
239

 
144

 
346

 
238

 
269

Defined contribution plans
8,544

 
8,718

 
9,225

Total pension and severance expense
$
8,890

 
$
8,956

 
$
9,494

 
 
 
 
 
 
 
Foreign Plans
(In thousands)
2012
 
2011
 
2010
Defined benefit and severance plans:
 
 
 
 
 
Service cost
$
6,783

 
$
6,291

 
$
6,105

Interest on projected benefit obligation
3,903

 
4,044

 
4,195

Expected return on plan assets
(32
)
 
(34
)
 
(37
)
Recognized actuarial loss
570

 
647

 
821

Amortization of prior service cost
128

 
128

 
128

 
11,352

 
11,076

 
11,212

Net settlement gain
—

 
(134
)
 
(118
)
 
11,352

 
10,942

 
11,094

Defined contribution plans
466

 
428

 
410

Total pension and severance expense
$
11,818

 
$
11,370

 
$
11,504
Schedule of Projected Benefit Obligation
Financial information with respect to the company's domestic and foreign defined benefit pension and severance plans is as follows:
 
Domestic Plans
Year Ended
December 31,
 
Foreign Plans
Year Ended
December 31,
(In thousands)
2012
 
2011
 
2012
 
2011
Fair value of plan assets at beginning of year
$
18,505

 
$
19,249

 
$
5,073

 
$
5,014

Actual return on plan assets
2,244

 
(244
)
 
47

 
74

Employer contributions
1,274

 
1,936

 
8,372

 
8,409

Benefits paid
(2,555
)
 
(2,436
)
 
(8,275
)
 
(8,424
)
Foreign exchange
—

 
—

 
(41
)
 
—

Fair value of plan assets at end of year
$
19,468

 
$
18,505

 
$
5,176

 
$
5,073

 
 
 
 
 
 
 
 
Projected benefit obligation at beginning of year
$
26,774

 
$
25,665

 
$
59,228

 
$
57,454

Service and interest cost
1,449

 
1,684

 
10,686

 
10,335

Actuarial loss (gain)
1,665

 
1,861

 
(942
)
 
(79
)
Benefits paid
(2,555
)
 
(2,436
)
 
(8,275
)
 
(8,424
)
Foreign exchange
—

 
—

 
(12
)
 
(58
)
Projected benefit obligation at end of year
$
27,333

 
$
26,774

 
$
60,685

 
$
59,228

 
 
 
 
 
 
 
 
Plan assets less than projected benefit obligation
$
(7,865
)
 
$
(8,269
)
 
$
(55,509
)
 
$
(54,155
)
Schedule of Assumptions Used
The following weighted-average assumptions were used to determine the projected benefit obligations for the company's domestic pension plans and foreign pension and severance plans:
 
Domestic Plans
December 31,
 
Foreign Plans
December 31,
 
2012
 
2011
 
2012
 
2011
Discount rate
3.50
%
 
4.25
%
 
6.75
%
 
6.75
%
Rate of compensation increase
5.00
%
 
5.00
%
 
5.00
%
 
5.00
%
The company's long-term rate of return on plan assets is based on the strategic asset allocation and future expected returns on plan assets. The following weighted-average assumptions were used to determine the net periodic benefit cost for the company's domestic pension plans and foreign pension and severance plans:
 
Domestic Plans
December 31,
 
Foreign Plans
December 31,
 
2012
 
2011
 
2012
 
2011
Discount rate
4.25
%
 
5.00
%
 
6.75
%
 
8.00
%
Rate of compensation increase
5.00
%
 
5.00
%
 
5.00
%
 
5.00
%
Long-term rate of return on plan assets
8.00
%
 
8.00
%
 
1.00
%
 
1.00
%
Schedule of Net Periodic Benefit Cost Not Yet Recognized
Included in "Accumulated other comprehensive income (loss)" in the Consolidated Balance Sheets are the following amounts that have not yet been recognized in net periodic pension cost:
 
December 31,
(In thousands)
2012
 
2011
Unrecognized actuarial losses
$
23,156

 
$
24,263

Unrecognized prior service costs
820

 
948
Schedule of Allocation of Plan Assets
The weighted-average asset allocations of the company's domestic pension plans and foreign pension and severance plans by asset category are as follows:
 
Domestic Plans
December 31,
 
Foreign Plans
December 31,
 
2012
 
2011
 
2012
 
2011
Asset category:
 
 
 
 
 
 
 
Equity securities
75
%
 
71
%
 
4
%
 
—

Fixed income securities
23
%
 
26
%
 
54
%
 
54
%
Cash and equivalents
2
%
 
3
%
 
42
%
 
46
%
The fair values of assets of the company's pension plans were as follows:
 
 
 
Fair Value Measurements Using
(In thousands)
Total
 
Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Unobservable
Inputs
(Level 3)
December 31, 2012
 
 
 
 
 
 
 
Domestic pension plans:
 
 
 
 
 
 
 
Money market accounts
$
393

 
$
393

 
$
—

 
$
—

Mutual funds:
 
 
 
 
 
 
 
Domestic
7,207

 
7,207

 
—

 
—

International
2,280

 
2,280

 
—

 
—

Domestic large-cap common stock
5,045

 
5,045

 
—

 
—

Fixed income securities:
 
 
 
 
 
 
 
Corporate bonds
2,442

 
—

 
2,442

 
—

Mortgage/asset-backed securities
1,795

 
—

 
1,795

 
—

Other
306

 
28

 
278

 
—

Total assets of domestic pension plans
19,468

 
14,953

 
4,515

 
—

Foreign pension and severance plans:
 
 
 
 
 
 
 
Cash and equivalents
2,158

 
2,158

 
—

 
—

Equity
199

 
199

 
—

 
—

Fixed income securities
2,819

 
—

 
2,819

 
—

Total assets of foreign pension and severance plans
5,176

 
2,357

 
2,819

 
—

Total assets of pension and severance plans
$
24,644

 
$
17,310

 
$
7,334

 
$
—

December 31, 2011
 
 
 
 
 
 
 
Domestic pension plans:
 
 
 
 
 
 
 
Money market accounts
$
538

 
$
538

 
$
—

 
$
—

Mutual funds:
 
 
 
 
 
 
 
Domestic
6,546

 
6,546

 
—

 
—

International
1,912

 
1,912

 
—

 
—

Domestic large-cap common stock
4,717

 
4,717

 
—

 
—

Fixed income securities:
 
 
 
 
 
 
 
Corporate bonds
2,642

 
—

 
2,642

 
—

Mortgage/asset-backed securities
1,968

 
—

 
1,968

 
—

Other
182

 
—

 
182

 
—

Total assets of domestic pension plans
18,505

 
13,713

 
4,792

 
—

Foreign pension and severance plans:
 
 
 
 
 
 
 
Cash and equivalents
2,347

 
2,347

 
—

 
—

Fixed income securities
2,726

 
—

 
2,726

 
—

Total assets of foreign pension and severance plans
5,073

 
2,347

 
2,726

 
—

Total assets of pension and severance plans
$
23,578

 
$
16,060

 
$
7,518

 
$
—
Schedule of Expected Benefit Payments
Expected benefit payments for the company's domestic defined benefit pension plans and foreign pension and severance plans are as follows:
(In thousands)
Domestic
Plans
 
Foreign
Plans
2013
$
2,046

 
$
7,211

2014
2,028

 
7,457

2015
2,022

 
8,149

2016
1,987

 
9,054

2017
1,941

 
9,499

2018-2022
8,889

 
44,778