Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Schedule of Deferred Tax Assets and Liabilities

The significant components of the deferred income tax assets and liabilities as of December 31, 2014 and 2013 are as follows (in thousands):



	December 31
	2014			2013
Deferred tax assets:
Net operating loss carryforward and federal credits	$	35,902		$	36,624
Capital and operating leases	—			2,841
Post-retirement employee benefits	31,067			6,470
Employee benefits other than post-retirement	16,489			16,667
Inventory reserve	2,930			3,050
Deferred revenue	9,154			8,903
Other	1,810			1,262
Deferred tax assets	97,352			75,817
Deferred tax liabilities:
Accelerated depreciation	(164,858		)	(155,769		)
Partnership items	(9,493		)	(9,466		)
State taxes	(5,995		)	(6,265		)
Valuation allowance against deferred tax assets	(229		)	(229		)
Deferred tax liabilities	(180,575		)	(171,729		)
Net deferred tax (liability)	$	(83,223	)	$	(95,912	)

Schedule of Components of Income Tax Expense (Benefit)

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



	Years Ended December 31
	2014			2013			2012
Current taxes:
Federal	$	338		$	67		$	—
Foreign	—			—			337
State	345			425			145
Deferred taxes:
Federal	17,411			17,902			23,454
Foreign	—			—			—
State	1,608			872			736
Total deferred tax expense	19,019			18,774			24,190
Total income tax expense from continuing operations	$	19,702		$	19,266		$	24,672
Income tax expense (benefit) from discontinued operations	$	(1,262	)	$	(2	)	$	(441	)

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
	2014		2013		2012
Statutory federal tax rate	35.0	%	35.0	%	35.0	%
Foreign income taxes	—	%	—	%	0.3	%
State income taxes, net of federal tax benefit	2.5	%	(234.7	)%	0.9	%
Tax effect of non-deductible goodwill	—	%	(5,121.2	)%	—	%
Tax effect of other non-deductible expenses	0.8	%	(26.4	)%	1.1	%
Other	(0.2	)%	(19.3	)%	(0.1	)%
Effective income tax rate	38.1	%	(5,366.6	)%	37.2	%

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
	2014		2013		2012
Statutory federal tax rate	(35.0	)%	(35.0	)%	(35.0	)%
State income taxes, net of federal tax benefit	(1.3	)%	(1.3	)%	(1.3	)%
Effective income tax rate	(36.3	)%	(36.3	)%	(36.3	)%