Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Income Tax Expense (Benefit)

Income tax expense (benefit) consists of the following (in thousands):

	Years ended December 31,
	2012			2011			2010
Current:
Federal	$	—		$	(57	)	$	(19,190	)
State		813			1,150			390
Total		813			1,093			(18,800	)
Deferred:
Federal		11,922			27,940			(5,045	)
State		(182	)		2,755			(948	)
Total		11,740			30,695			(5,993	)
Total income tax expense (benefit)	$	10,927		$	31,788		$	(24,793	)

Reconciliation Between Federal Statutory Rate and Income From Continuing Operations With the Provisions For Income Taxes

Reconciliation between the amount determined by applying the federal statutory rate of 35% to income from continuing operations with the provision for income taxes is as follows (in thousands):

	Years ended December 31,
	2012			2011		2010
Statutory federal income tax	$	11,123		$	27,633	$	(23,925	)
Meals and entertainment		672			630		473
State taxes, net of federal benefit		(758	)		3,504		(847	)
Impairment of non-deductible goodwill		—			—		—
Changes in estimates and other		(110	)		21		(494	)
	$	10,927		$	31,788	$	(24,793	)

Schedule of Significant Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows (in thousands):

	December 31,
	2012			2011
Deferred tax assets:
Receivables allowance	$	1,026		$	456
Inventory		234			177
Asset retirement obligation		530			492
Accrued liabilities		10,177			8,695
Operating loss carryforward		21,254			32,946
Goodwill and intangibles		5,119			8,298
Deferred compensation		7,851			6,732
Total deferred tax assets	$	46,191		$	57,796
Deferred tax liabilities:
Property and equipment		(199,765	)		(199,795	)
Prepaid expenses		(2,414	)		(2,398	)
Total deferred tax liabilities	$	(202,179	)	$	(202,193	)
Net deferred tax liability	$	(155,988	)	$	(144,397	)
Recognized as:
Deferred tax assets — current		29,113			39,154
Deferred tax liabilities — non-current		(185,101	)		(183,551	)
Net deferred tax liability	$	(155,988	)	$	(144,397	)