Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Deferred Tax Assets and Liabilities

The significant components of the deferred income tax assets and liabilities as of December 31, 2012 and 2011 are as follows (in thousands):



	December 31
	2012			2011
Deferred tax assets:
Net operating loss carryforward and federal credits	$	34,401		$	35,814
Capital and operating leases	1,742			763
Post-retirement employee benefits	62,823			65,695
Employee benefits other than post-retirement	18,010			17,324
Inventory reserve	3,181			3,172
Deferred revenue	10,770			9,624
Other	458			221
Deferred tax assets	131,385			132,613
Deferred tax liabilities:
Accelerated depreciation	(147,282		)	(130,180		)
Partnership items	(9,418		)	(12,384		)
State taxes	(1,724		)	(802		)
Valuation allowance against deferred tax assets	(229		)	(229		)
Deferred tax liabilities	(158,653		)	(143,595		)
Net deferred tax (liability)	$	(27,268	)	$	(10,982	)

Schedule of Components of Income Tax Expense (Benefit)

The following summarizes the Company’s income tax provisions (benefits) (in thousands):



	Years Ended December 31
	2012			2011			2010
Current taxes:
Federal	$	—		$	(950	)	$	1,275
Foreign	337			—			—
State	145			426			1,278
Deferred taxes:
Federal	23,454			15,968			20,452
Foreign	—			—			—
State	736			1,551			408
Total deferred tax expense	24,190			17,519			20,860
Total income tax expense from continuing operations	$	24,672		$	16,995		$	23,413
Income tax expense (benefit) from discontinued operations	$	(441	)	$	(393	)	$	(40	)
Income tax expense (benefit) for debt extinguishment	$	—		$	—		$	(14,847	)

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of income tax from continuing operations computed at the U.S. statutory federal income tax rates to effective income tax rates is as follows:



	Years Ended December 31
	2012		2011		2010
Statutory federal tax rate	35.0	%	35.0	%	35.0	%
Foreign income taxes	0.3	%	—	%	—	%
State income taxes, net of federal tax benefit	0.9	%	3.1	%	1.7	%
Tax effect of non-deductible goodwill	—	%	2.4	%	—	%
Tax effect of other non-deductible expenses	1.1	%	1.7	%	0.9	%
Other	(0.1	)%	(0.6	)%	(0.6	)%
Effective income tax rate	37.2	%	41.6	%	37.0	%

Schedule of Effective Income Tax Rate Reconciliation, Discontinued Operations

The reconciliation of income tax from discontinued operations computed at the U.S. statutory federal income tax rates to effective income tax rates is as follows:



	Years Ended December 31
	2012		2011		2010
Statutory federal tax rate	(35.0	)%	(35.0	)%	(35.0	)%
State income taxes, net of federal tax benefit	(1.3	)%	(1.8	)%	(1.3	)%
Effective income tax rate	(36.3	)%	(36.8	)%	(36.3	)%

Schedule of Unrecognized Tax Benefits Roll Forward

Changes in unrecognized tax benefits are as follows (in thousands):



	2012		2011		2010
As of January 1	$	—	$	—	$	4,287
Expiration of uncertain tax positions	—		—		(4,287		)
As of December 31	$	—	$	—	$	—