Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

Following is a summary of the provision for (benefit from) income taxes (in thousands):

Years Ended December 31,	2015		2014		2013
Federal:
Current	$	4,810	$	2,529	$	(1,298	)
Deferred	25,955		11,142		(18,606		)
Total federal	30,765		13,671		(19,904		)
State:
Current	1,914		1,897		1,592
Deferred	2,500		4,153		(951		)
Total state	4,414		6,050		641
Total provision for (benefit from) income taxes	$	35,179	$	19,721	$	(19,263	)

Schedule of Effective Income Tax Rate Reconciliation

Following is a reconciliation of our provision for (benefit from) income taxes from the Federal statutory tax rate to our effective tax rate (dollars in thousands):

Years Ended December 31,	2015					2014					2013
Federal statutory tax	$	35,165		34.0	%	$	19,459		35.0	%	$	(22,411	)	35.0	%
State taxes, net of federal tax benefit	3,769			3.6		5,420			9.7		101			(0.2	)
Percentage depletion deduction	(1,444		)	(1.4	)	(1,217		)	(2.2	)	(787		)	1.2
Domestic production deduction	(306		)	(0.3	)	(2		)	—		(27		)	0.1
Non-controlling interests	(2,639		)	(2.6	)	(3,686		)	(6.6	)	2,920			(4.6	)
Nondeductible expenses	219			0.2		275			0.5		2,384			(3.7	)
Other	415			0.5		(528		)	(0.9	)	(1,443		)	2.3
Total	$	35,179		34.0	%	$	19,721		35.5	%	$	(19,263	)	30.1	%

Schedule of Deferred Tax Assets and Liabilities

Following is a summary of the deferred tax assets and liabilities (in thousands):

December 31,	2015			2014
Long-term deferred tax assets:
Receivables	$	332		$	306
Inventory	2,710			3,579
Insurance	10,427			11,534
Deferred compensation	11,139			12,479
Other accrued liabilities	3,405			4,801
Contract income recognition	—			5,592
Impairments on real estate investments	485			11,329
Accrued compensation	12,639			7,524
Other	2,925			2,107
Net operating loss carryforwards	648			8,665
Valuation allowance	(641		)	(1,185		)
Total long-term deferred tax assets	44,069			66,731
Long-term deferred tax liabilities:
Property and equipment	30,285			33,946
Contract income recognition	9,455			—
Total long-term deferred tax liabilities	39,740			33,946
Net long-term deferred tax assets	$	4,329		$	32,785

Summary of Valuation Allowance

ur deferred tax asset for net operating loss carryforwards relates to state and l

Summary of Income Tax Contingencies

The following is a tabular reconciliation of unrecognized tax benefits (in thousands), the balance of which is included in other long-term liabilities on the consolidated balance sheets:

December 31,	2015			2014			2013
Beginning balance	$	887		$	2,231		$	2,315
Gross increases – current period tax positions	1,006			—			363
Gross decreases – current period tax positions	(156		)	(282		)	(638		)
Gross increases – prior period tax positions	—			—			508
Gross decreases – prior period tax positions	—			(2		)	(2		)
Settlements with taxing authorities/lapse of statute of limitations	(159		)	(1,060		)	(315		)
Ending balance	$	1,578		$	887		$	2,231