Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Income before income taxes

	2012			2011			2010
United States income (loss)	$	(507,197	)	$	91,329		$	225,555
Foreign income (loss)	$	24,052		$	(10,722	)	$	(25,390	)
	$	(483,145	)	$	80,607		$	200,165

Provision for income taxes

	2012			2011		2010
Current:
Federal	$	(68,791	)	$	—	$	(13,280	)
State		21,503			19,122		—
Foreign		—			—		9,334
Total current		(47,288	)		19,122		(3,946	)
Deferred:
Federal		169,923			13,302		114,738
State		1,628			463		(530	)
Foreign		7,170			10,629		21,534
		178,721			24,394		135,742
	$	131,433		$	43,516	$	131,796

Differences between federal statutory rate and effective tax rate

	2012			2011			2010
Statutory income tax rate		34	%		34	%		34	%
State and foreign income taxes, net of federal benefit		1			1			1
Change in valuation allowance		(69	)		—			23
Foreign earnings taxed at different rate		—			(24	)		—
Change in estimated state income tax rate		(5	)		3			—
Other permanent differences		12			40			8
Effective tax rate		(27	)%		54	%		66	%

Schedule of deferred tax assets and liabilities

	2012			2011
Deferred tax liabilities:
Property, plant and equipment	$	(192,136	)	$	(165,421	)
Prepaid expenses and other		(4,599	)		(4,599	)
Total deferred tax liabilities		(196,735	)		(170,020	)
Deferred tax assets:
Operating loss carryforwards		1,209,966			929,061
Postretirement benefits		22,047			22,047
Pension costs		691,824			666,138
Allowance for doubtful accounts		52,385			45,667
Other assets		5,719			8,008
Accrued expenses		171,444			121,219
Other employee benefits		16,009			8,746
Inventory costs		85,742			74,563
Total deferred tax assets		2,255,136			1,875,449
Net		2,058,401			1,705,429
Valuation allowance		(1,142,633	)		(699,874	)
Net	$	915,768		$	1,005,555
Current deferred tax asset	$	287,417		$	278,437
Long-term deferred tax asset		628,351			727,118
	$	915,768		$	1,005,555