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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Schedule of Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes consists of the following:

		Years Ended September 30,
		2019				2018				2017
		(in thousands)
Current
Federal		$	(138	)		$	—			$	—
State			341				465				359
		$	203			$	465			$	359
Deferred
Federal			13,238				(17,308	)			17,713
State			2,265				(583	)			2,802
		$	15,503			$	(17,891	)		$	20,515
Provision (Benefit) for income taxes		$	15,706			$	(17,426	)		$	20,874

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,
		2019				2018				2017
		(in thousands)
Income tax expense at federal statutory rate		$	13,290			$	3,878			$	18,796
Increase (reduction)  in income taxes resulting from:
State taxes, net of federal tax benefit			1,785				660				1,397
Nondeductible stock compensation expenses			(21	)			—				—
Permanent items			261				63				92
Change in valuation allowances			(50	)			(646	)			531
US Tax Cuts and Jobs Act Impact			—				(22,015	)			—
162(m) Limitation			119
Impact of changing rates on deferred tax assets			484				(773	)			(353	)
Expired tax attributes			111				1,088				409
Other			(273	)			319				2
Income tax expense (benefit)		$	15,706			$	(17,426	)		$	20,874

Schedule of Deferred Tax Assets

The Company's deferred tax assets as of September 30, 2019 and 2018 are as follows:

		Years Ended September 30,
		2019				2018
		(in thousands)
Net operating carry forwards		$	106,645			$	91,981
Deferred credits			1,882				2,443
Other accrued expenses			2,329				1,871
Prepaids and other			2,576				3,530
State alternative minimum tax			1				1
Other reserves and estimated losses			947				836
Operating lease			4,928				6,399
Allowance for doubtful receivables			—				905
Subtotal		$	119,308			$	107,966
Less: valuation allowance			(1,890	)			(1,940	)
Total net deferred tax assets		$	117,418			$	106,026
Intangibles			(2,204	)			(2,613	)
Property and equipment			(170,517	)			(143,210	)
Total deferred tax liabilities		$	(172,721	)		$	(145,823	)
Net deferred tax liability		$	(55,303	)		$	(39,797	)

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,
		2019				2018				2017
		(in thousands)
Unrecognized tax benefits — October 1		$	4,688			$	7,547			$	7,547
Gross decreases — tax positions in prior period			—				(2,859	)			—
Unrecognized tax benefits — September 30		$	4,688			$	4,688			$	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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