Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Summary of Provision for Income Taxes from Continuing Operations

The following table summarizes our provision for income taxes for the periods presented: 

	Successor		Predecessor
	Period From September 13, 2016		Period From January 1, 2016		Year Ended December 31,
	Through December 31, 2016		Through September 12, 2016		2015			2014
Current income taxes (benefit)
Federal	$	—	$	—	$	(660	)	$	2,045
State	—		—		1			1,504
	—		—		(659		)	3,549
Deferred income tax benefit
Federal	—		—		(261		)	(130,693		)
State	—		—		(4,451		)	(4,534		)
	—		—		(4,712		)	(135,227		)
	$	—	$	—	$	(5,371	)	$	(131,678	)

Income Taxes Reconciliation

The following table reconciles the difference between the income tax benefit computed by applying the statutory tax rate to our loss before income taxes and our reported income tax benefit for the periods presented: 

	Successor					Predecessor
	Period From September 13, 2016					Period From January 1, 2016					Year Ended December 31,
	Through December 31, 2016					Through September 12, 2016					2015					2014
Computed at federal statutory rate	$	(1,854	)	35.0	%	$	369,111		35.0	%	$	(555,916	)	35.0	%	$	(189,445	)	35.0	%
State income taxes, net of federal income tax benefit	197			(3.7	)%	1,989			0.2	%	(4,438		)	0.3	%	(3,556		)	0.6	%
Change in valuation allowance	1,657			(31.3	)%	(384,692		)	(36.5	)%	554,879			(35.0	)%	61,104			(11.3	)%
Reorganization adjustments	—			—	%	13,572			1.3	%	—			—	%	—			—	%
Other, net	—			—	%	20			—	%	104			—	%	219			—	%
	$	—		—	%	$	—		—	%	$	(5,371	)	0.3	%	$	(131,678	)	24.3	%

Summary of Principal Components of Net Deferred Income Tax Liability

The following table summarizes the principal components of our deferred income tax assets and liabilities as of the dates presented: 

	Successor			Predecessor
	December 31,
	2016			2015
Deferred tax assets:
Property and equipment	$	183,303		$	417,535
Pension and postretirement benefits	710			2,276
Share-based compensation	28			7,393
Net operating loss (“NOL”) carryforwards	87,622			222,971
Fair value of derivative instruments	9,579			—
Deferred gains	—			30,382
Other	7,166			16,637
	288,408			697,194
Less:  Valuation allowance	(288,408		)	(662,909		)
Total net deferred tax assets	—			34,285
Deferred tax liabilities:
Fair value of derivative instruments	—			34,285
Total net deferred tax liabilities	—			34,285
Net deferred tax liabilities	$	—		$	—