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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2023
Income Taxes [Abstract] |
Schedule of Deferred Income Tax Liabilities and Assets |
|  | 2023 |  | 2022
Deferred tax liabilities: |  |  |  |  |  |
Property and equipment tax/book differences |  | $ | 78,008,000 |  | $ | 82,457,000
Interest rate swaps |  |  | 4,278,000 |  |  | 4,011,000
Property tax method |  |  | 1,462,000 |  |  | 1,450,000
Total deferred tax liabilities |  |  | 83,748,000 |  |  | 87,918,000
Deferred tax assets: |  |  |  |  |  |
Insurance reserves |  |  | 5,115,000 |  |  | 4,303,000
Advance payments on purchases contracts |  |  | 731,000 |  |  | 487,000
Vacation accrual |  |  | 1,724,000 |  |  | 1,977,000
Inventory |  |  | 1,777,000 |  |  | 1,571,000
Deferred compensation |  |  | 5,282,000 |  |  | 4,483,000
Other |  |  | 1,932,000 |  |  | 1,519,000
Total deferred tax assets |  |  | 16,561,000 |  |  | 14,340,000
Net deferred tax liabilities |  | $ | 67,187,000 |  | $ | 73,578,000
Schedule of Income Tax Expense Reconciliation |
|  | 2023 |  | 2022 |  | 2021
Federal tax at statutory rate |  | $ | 58,396,000 |  | $ | 75,783,000 |  | $ | 68,818,000
State income tax, net of federal tax benefits |  |  | 9,247,000 |  |  | 12,032,000 |  |  | 10,872,000
Federal tax credits |  |  | (1,449,000) |  |  | (1,500,000) |  |  | (1,700,000)
Other |  |  | 1,499,000 |  |  | 2,196,000 |  |  | (107,000)
Total |  | $ | 67,693,000 |  | $ | 88,511,000 |  | $ | 77,883,000
Schedule of Current and Deferred Income Tax Expense (Benefit) |
|  | 2023 |  | 2022 |  | 2021
Current: |  |  |  |  |  |  |  |  |
Federal |  | $ | 61,562,000 |  | $ | 76,647,000 |  | $ | 66,526,000
State |  |  | 12,789,000 |  |  | 16,173,000 |  |  | 14,129,000
Total current expense |  |  | 74,351,000 |  |  | 92,820,000 |  |  | 80,655,000
Deferred: |  |  |  |  |  |  |  |  |
Federal |  |  | (5,802,000) |  |  | (3,565,000) |  |  | (2,482,000)
State |  |  | (856,000) |  |  | (744,000) |  |  | (290,000)
Total deferred (benefit) expense |  |  | (6,658,000) |  |  | (4,309,000) |  |  | (2,772,000)
Total expense |  | $ | 67,693,000 |  | $ | 88,511,000 |  | $ | 77,883,000

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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