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Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2012
Pension and Other Postretirement Benefit Expense [Abstract]  
Schedule of Expected Benefit Payments [Table Text Block]
The following represents expected future benefit payments from the plan, which reflect expected future service, as appropriate:
 
 
 
Other
 
Pension
 
Postretirement
 
Benefits
 
Benefits
 
(In thousands)
2013
$
21,275

 
$
3,987

2014
23,674

 
4,204

2015
24,210

 
4,430

2016
28,464

 
4,720

2017
32,124

 
4,893

Years 2018-2022
190,016

 
24,895

 
$
319,763

 
$
47,129

Schedule of Allocation of Plan Assets [Table Text Block]
The Company's pension plan assets at December 31, 2012 and 2011, respectively, are categorized below according to the fair value hierarchy as defined in Note 11, "Fair Value Measurements":
 
Total
 
Level 1
 
Level 2
 
Level 3
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
 
(In thousands)
Equity Securities:(A)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. small-cap
$
13,099

 
$
11,178

 
$
13,099

 
$
11,178

 
$

 
$

 
$

 
$

U.S. mid-cap
43,946

 
50,264

 
12,717

 
23,474

 
31,229

 
26,790

 

 

U.S. large-cap
102,922

 
91,561

 
48,536

 
44,820

 
54,386

 
46,741

 

 

Non-U.S.
27,251

 
22,509

 

 

 
27,251

 
22,509

 

 

Fixed income securities:

 

 
 
 
 
 
 
 
 
 
 
 
 
U.S. government securities(B)
24,202

 
13,454

 
23,483

 
12,738

 
719

 
716

 

 

Non-U.S. government securities(C)
3,681

 
2,968

 

 

 
3,681

 
2,968

 

 

U.S. government asset and mortgage backed securities(D)
781

 
800

 

 

 
781

 
800

 

 

Corporate fixed income(E)
14,016

 
14,004

 

 

 
14,016

 
14,004

 

 

State and local government securities(F)
9,903

 
18,416

 

 

 
9,903

 
18,416

 

 

Other fixed income(G)
61,765

 
51,470

 

 

 
61,765

 
51,470

 

 

Short-term investments(H)
20,894

 
8,029

 

 

 
20,894

 
8,029

 

 

Other investments(I)
414

 
421

 

 

 
414

 
421

 

 

Total
$
322,874

 
$
285,074

 
$
97,835

 
$
92,210

 
$
225,039

 
$
192,864

 
$

 
$

 (A) Equity securities includes investments in 1) common stock, 2) preferred stock and 3) mutual funds. Investments in common and preferred stocks are valued using quoted market prices multiplied by the number of shares owned. Investments in mutual funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date and are traded on listed exchanges.
(B) U.S. government securities includes agency and treasury debt. These investments are valued using dealer quotes in an active market.

(C) Non-U.S. government securities includes debt securities issued by foreign governments and are valued utilizing a price spread basis valuation technique with observable sources from investment dealers and research vendors.

(D) U.S. government asset and mortgage backed securities includes government-backed mortgage funds which are valued utilizing an income approach that includes various valuation techniques and sources such as discounted cash flows models, benchmark yields and securities, reported trades, issuer trades and/or other applicable data.

(E) Corporate fixed income is primarily comprised of corporate bonds and certain corporate asset-backed securities that are denominated in the U.S. dollar and are investment-grade securities. These investments are valued using dealer quotes.

(F) State and local government securities include different U.S. state and local municipal bonds and asset backed securities, these investments are valued utilizing a market approach that includes various valuation techniques and sources such as value generation models, broker quotes, benchmark yields and securities, reported trades, issuer trades and/or other applicable data.

(G) Other fixed income investments are actively managed fixed income vehicles that are valued at the net asset value per share multiplied by the number of shares held as of the measurement date.

(H) Short-term investments include governmental agency funds, government repurchase agreements, commingled funds, and pooled funds and mutual funds. Governmental agency funds are valued utilizing an option adjusted spread valuation technique and sources such as interest rate generation processes, benchmark yields and broker quotes. Investments in governmental repurchase agreements, commingled funds and pooled funds and mutual funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date.

(I) Other investments includes cash, forward contracts, derivative instruments, credit default swaps, interest rate swaps and mutual funds. Investments in interest rate swaps are valued utilizing a market approach that includes various valuation techniques and sources such as value generation models, broker quotes in active and non-active markets, benchmark yields and securities, reported trades, issuer trades and/or other applicable data. Forward contracts and derivative instruments are valued at their exchange listed price or broker quote in an active market. The mutual funds are valued at the net asset value per share multiplied by the number of shares held as of the measurement date and are traded on listed exchanges.
Pension Benefit Costs
Summaries of the changes in the benefit obligations, plan assets and funded status of the plans are as follows:
 
 
 
 
 
Other Postretirement
 
Pension Benefits
 
Benefits
 
2012
 
2011
 
2012
 
2011
 
(In thousands)
CHANGE IN BENEFIT OBLIGATIONS
 
 
 
 
 
 
 
Benefit obligations at January 1
$
333,951

 
$
297,707

 
$
45,129

 
$
39,633

Service cost
27,466

 
16,490

 
2,142

 
3,917

Interest cost
15,668

 
16,253

 
2,020

 
3,279

Plan amendments

 
(3,235
)
 
2,183

 
(55,542
)
Benefits paid
(23,624
)
 
(18,848
)
 
(4,244
)
 
(1,669
)
Curtailments
(687
)
 

 
(708
)
 

Acquisition of ICG

 

 

 
48,441

Other-primarily actuarial loss (gain)
38,120

 
25,584

 
2,804

 
7,070

Benefit obligations at December 31
$
390,894

 
$
333,951

 
$
49,326

 
$
45,129

CHANGE IN PLAN ASSETS
 
 
 
 
 
 
 
Value of plan assets at January 1
$
285,074

 
$
247,713

 
$

 
$

Actual return on plan assets
42,396

 
9,443

 

 

Employer contributions
19,028

 
46,766

 
4,244

 
1,669

Benefits paid
(23,624
)
 
(18,848
)
 
(4,244
)
 
(1,669
)
Value of plan assets at December 31
$
322,874

 
$
285,074

 
$

 
$

Accrued benefit cost
(68,020
)
 
(48,877
)
 
(49,326
)
 
(45,129
)
ITEMS NOT YET RECOGNIZED AS A COMPONENT OF NET PERIODIC BENEFIT COST
 
 
 
 
 
 
 
Prior service credit (cost)
$
1,890

 
$
1,736

 
$
45,938

 
$
62,920

Accumulated gain (loss)
(68,915
)
 
(68,302
)
 
(1,531
)
 
1,795

 
$
(67,025
)
 
$
(66,566
)
 
$
44,407

 
$
64,715

BALANCE SHEET AMOUNTS
 
 
 
 
 
 
 
Current liability
$
(390
)
 
$
(633
)
 
$
(4,240
)
 
$
(2,820
)
Noncurrent liability
$
(67,630
)
 
$
(48,244
)
 
$
(45,086
)
 
$
(42,309
)
 
$
(68,020
)
 
$
(48,877
)
 
$
(49,326
)
 
$
(45,129
)
The following table details the components of pension benefit costs:
 
Pension Benefits
 
Other Postretirement Benefits
Year Ended December 31,
2012
 
2011
 
2010
 
2012
 
2011
 
2010
 
(In thousands)
Service cost
$
27,466

 
$
16,490

 
$
15,870

 
$
2,142

 
$
3,917

 
$
1,509

Interest cost
15,668

 
16,253

 
15,822

 
2,020

 
3,279

 
2,083

Curtailments
324

 

 

 
(4,049
)
 

 

Expected return on plan assets*
(22,030
)
 
(21,812
)
 
(19,392
)
 

 

 

Amortization of prior service cost (credit)
259

 
(189
)
 
173

 
(11,458
)
 
(2,364
)
 
(2,364
)
Amortization of other actuarial losses (gains)
14,666

 
8,748

 
7,130

 
(522
)
 
(3,100
)
 
(2,918
)
Net benefit cost
$
36,353

 
$
19,490

 
$
19,603

 
$
(11,867
)
 
$
1,732

 
$
(1,690
)
 
 
 
 
 
 
 
 
 
 
 
 
*The Company does not fund its other postretirement benefit obligations.
 
 
 
 
 
 
 
 
ScheduleOfActuarialPresentValueOfProjectedBenefitObligationsTableTextBlock [Table Text Block]
The following table provides the assumptions used to determine the actuarial present value of projected benefit obligations at December 31.
 
 
 
 
 
Other
 
Pension
 
Postretirement
 
Benefits
 
Benefits
 
2012
 
2011
 
2012
 
2011
Weighted average assumptions:
 
 
 
 
 
 
 
Discount rate
4.13%
 
4.91%
 
3.64%
 
4.52%
Rate of compensation increase
3.39%
 
3.39%
 
N/A
 
N/A
Schedule of Assumptions Used [Table Text Block]
The following table provides the assumptions used to determine net periodic benefit cost for years ended December 31.

 
Pension Benefits
 
Other Postretirement Benefits
 
2012
 
2011
 
2010
 
2012
 
2011
 
2010
Weighted average assumptions:
 
 
 
 
 
 
 
 
 
 
 
Discount rate
4.91%
 
5.71%
 
5.97%
 
4.52%
 
5.23%
 
5.67%
Rate of compensation increase
3.39%
 
3.39%
 
3.39%
 
N/A
 
N/A
 
N/A
Expected return on plan assets
7.75%
 
8.50%
 
8.50%
 
N/A
 
N/A
 
N/A