Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Net operating carry forwards	$ 113,402	$ 106,645
Deferred credits	1,485	1,882
Other accrued expenses	2,842	2,329
Prepaids and other	1,632	2,576
State alternative minimum tax	1	1
Other reserves and estimated losses	641	947
Operating lease	24,263	4,928
Subtotal	144,266	119,308
Less: valuation allowance	(3,063)	(1,890)
Total net deferred tax assets	141,203	117,418
Intangibles	(1,830)	(2,204)
ROU Lease	(19,210)
Property and equipment	(184,438)	(170,517)
Total deferred tax liabilities	(205,478)	(172,721)
Net deferred tax liability	$ (64,275)	$ (55,303)

Deferred tax assets operating lease.

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Deferred tax assets prepaid and other.

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Deferred tax liabilities right of use assets lease.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from provisions, reserves, allowances, and accruals, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from loss reserves other than estimated credit losses.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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