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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2018

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision for income taxes consists of the following:

		Years Ended September 30,
		2018				2017				2016
		(in thousands)
Current
Federal		$	—			$	—			$	—
State			465				359				413
		$	465			$	359			$	413
Deferred
Federal			(17,308	)			17,713				8,982
State			(583	)			2,802				531
		$	(17,891	)		$	20,515			$	9,513
(Benefit) provision for income taxes		$	(17,426	)		$	20,874			$	9,926

Schedule of Reconciliation between Effective Tax Rate Income from Continuing Operations and Statutory Rate

Reconciliation between the effective tax rate on income from continuing operations and the statutory tax rate is as follows:

		Years Ended September 30,
		2018				2017				2016
		(in thousands)
Income tax expense at federal statutory rate		$	3,878			$	18,796			$	8,696
(Reduction) increase in income taxes resulting from:
State taxes, net of federal tax benefit			660				1,397				792
Nondeductible stock compensation expenses			—				—				—
Permanent items			63				92				71
Change in valuation allowances			(646	)			531				249
US Tax Cuts and Jobs Act Impact			(22,015	)			—				—
Impact of changing rates on deferred tax assets			(773	)			(353	)			(673	)
Expired tax attributes			1,088				409				380
Other			319				2				411
Income tax (benefit) expense		$	(17,426	)		$	20,874			$	9,926

Schedule of Deferred Tax Assets

The Company's deferred tax assets as of September 30, 2018 and 2017 are as follows:

		Years Ended September 30,
		2018				2017
		(in thousands)
Net operating loss carry forwards		$	91,981			$	103,653
Deferred credits			2,443				4,389
Other accrued expenses			1,871				1,756
Prepaids and other			3,530				8,936
Alternative minimum tax			1				2,536
Other reserves and estimated losses			836				1,335
Operating lease			6,399				13,113
Allowance for doubtful receivables			905				1,087
Subtotal		$	107,966			$	136,805
Less: valuation allowance			(1,940	)			(2,586	)
Total net deferred tax assets		$	106,026			$	134,219
Intangibles			(2,613	)			(4,317	)
Property and equipment			(143,210	)			(186,338	)
Total deferred tax liabilities		$	(145,823	)		$	(190,655	)
Net deferred tax liability		$	(39,797	)		$	(56,436	)

Schedule of Reconciliation of Total Amounts of Unrecognized Tax Benefits

The following is a tabular reconciliation of the total amounts of unrecognized tax benefits:

		Years Ended September 30,
		2018				2017				2016
		(in thousands)
Unrecognized tax benefits — October 1		$	7,547			$	7,547				7,547
Gross increases — tax positions in prior period			—				—				—
Gross decreases — tax positions in prior period			(2,859	)			—				—
Gross increases — tax positions in current period			—				—				—
Settlement			—				—				—
Lapse of statute of limitations			—				—				—
Unrecognized tax benefits — September 30		$	4,688			$	7,547			$	7,547

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of the change in unrecognized tax benefits.

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