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Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of Income Tax Expense (Benefit)
The following table presents the 2015, 2014 and 2013 income tax expense (benefit):
 
Year Ended December 31
 
2015(1)
 
2014(2)
 
2013(3)
 
(In thousands)
Current income taxes:
 
 
 
 
 
Federal
$
26,939

 
$
(94,983
)
 
$
(52,601
)
State
1,987

 
1,255

 
(9,477
)
Foreign
513

 
723

 
6

Total current income tax expense (benefit)
29,439

 
(93,005
)
 
(62,072
)
Deferred income taxes:
 
 
 
 
 
Federal
(34,620
)
 
54,015

 
15,051

State
(48
)
 
6,894

 
4,696

Total deferred income tax expense (benefit)
(34,668
)
 
60,909

 
19,747

Total income tax benefit
$
(5,229
)
 
$
(32,096
)
 
$
(42,325
)
(1)
Excludes $0.5 million of income tax expense related to discontinued operations.
(2)
Excludes $0.9 million of income tax expense related to discontinued operations.
(3)
Excludes $431.0 million of income tax expense related to discontinued operations.
Reconciliation of Income Taxes
The following is a reconciliation of income tax expense (benefit) computed at the U.S. federal statutory tax rate to income tax expense (benefit) reported in our Consolidated Statements of Operations:
 
Year Ended December 31
 
2015
 
2014
 
2013
 
Amount
 
Percentage
 
Amount
 
Percentage
 
Amount
 
Percentage
 
(In thousands, except percentages)
Tax expense (benefit) at statutory rate
$
(4,658
)
 
35.0
 %
 
$
(18,299
)
 
35.0
 %
 
$
99,062

 
35.0
 %
State income taxes
3,469

 
(26.1
)
 
2,281

 
(4.4
)
 
(2,894
)
 
(1.0
)
Tax-free disposition of investment
—

 
—

 
—

 
—

 
(145,524
)
 
(51.4
)
Uncertain tax position
—

 
—

 
(15,451
)
 
29.6

 
6,106

 
2.2

Domestic production activities deduction
(2,456
)
 
18.5

 
—

 
—

 
—

 
—

Corporate owned life insurance
(947
)
 
7.1

 
(870
)
 
1.7

 
(1,776
)
 
(0.6
)
Nondeductible executive compensation
851

 
(6.4
)
 
683

 
(1.3
)
 
449

 
0.2

Changes in valuation allowance
(2,209
)
 
16.6

 
3,016

 
(5.8
)
 
(213
)
 
(0.1
)
Other
721

 
(5.4
)
 
(3,456
)
 
6.6

 
2,465

 
0.8

Total
$
(5,229
)
 
39.3
 %
 
$
(32,096
)
 
61.4
 %
 
$
(42,325
)
 
(14.9
)%
Deferred Income Tax Assets (Liabilities)
The tax effects of temporary differences giving rise to deferred income tax assets (liabilities) were:
 
December 31
 
2015(1)
 
2014(2)
 
(In thousands)
Deferred income tax assets:
 
 
 
Accrued liabilities
$
104,675

 
$
105,029

Retirement plans and postretirement benefits
33,259

 
38,004

Share-based compensation
15,386

 
16,261

Receivables and inventories
11,061

 
11,155

Intangible assets
4,131

 
—

Derivative financial instruments
3,990

 
1,646

State net operating loss carryforwards
30,799

 
35,089

State tax credit carryforwards
5,026

 
4,748

Valuation allowances
(10,968
)
 
(13,177
)
 
197,359

 
198,755

Deferred income tax liabilities:
 
 
 
Property, plant and equipment
(208,485
)
 
(209,168
)
Intangible assets
—

 
(29,612
)
Cancellation of debt
(8,411
)
 
(11,299
)
Other
(1,162
)
 
(843
)
 
(218,058
)
 
(250,922
)
Net deferred income tax liability
$
(20,699
)
 
$
(52,167
)
(1)
Includes $8.7 million of deferred tax assets related to uncertain tax positions.
(2)
Includes $8.0 million of deferred tax assets related to uncertain tax positions.
Balance Sheet Classification of Net Deferred Income Tax Assets (Liabilities)
These net deferred income tax assets (liabilities) are classified in our Consolidated Balance Sheets as follows:
 
December 31
 
2015
 
2014
 
(In thousands)
Current assets
$
54,735

 
$
50,362

Noncurrent assets
31,386

 
35,415

Noncurrent liabilities
(106,820
)
 
(137,944
)
Total
$
(20,699
)
 
$
(52,167
)
Reconciliation of Gross Unrecognized Tax Benefits
The following is a reconciliation of gross unrecognized tax benefits, including interest, recorded in our Consolidated Balance Sheets:
 
December 31
 
2015
 
2014
 
2013
 
(In thousands)
Balance at beginning of year
$
26,463

 
$
40,478

 
$
27,734

Increases in tax positions for current year
39

 
—

 
18,230

Increases in tax positions for prior years
1,327

 
11,432

 
2,315

Decreases in tax positions for prior years
—

 
(21,194
)
 
(6,192
)
Settlement of tax matters
—

 
(4,203
)
 
(1,232
)
Lapse of applicable statutes of limitations
—

 
(50
)
 
(377
)
Balance at end of year
$
27,829

 
$
26,463

 
$
40,478
Balance Sheet Classification of Unrecognized Tax Benefits
These unrecognized tax benefits are classified in our Consolidated Balance Sheets as follows:
 
December 31
 
2015
 
2014
 
2013
 
(In thousands)
Accrued expenses
$
553

 
$
295

 
$
3,348

Other long-term liabilities
27,276

 
26,168

 
37,130

Total
$
27,829

 
$
26,463

 
$
40,478