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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2015
Income Tax Disclosure [Abstract] |
Provision for income taxes |
|  |  |  |  | 2015 |  |  |  | 2014 |  |  |  | 2013 |
| Current: |  |  |  |  |  |  |  |  |  |  |  |  |
| Federal |  |  | $ | 1,803 |  |  |  | 2,820 |  |  |  | 1,842 |
| State |  |  |  | 524 |  |  |  | 1,083 |  |  |  | 392 |
|  |  |  |  | 2,327 |  |  |  | 3,903 |  |  |  | 2,234 |
| Deferred |  |  |  | 1,568 |  |  |  | (342 | ) |  |  | 3,274 |
| Total |  |  | $ | 3,895 |  |  |  | 3,561 |  |  |  | 5,508 |
|  |  | 2015 |  |  |  | 2014 |  |  |  | 2013 |
Amount computed at statutory |  |  |  |  |  |  |  |  |  |  |  |
Federal rate |  | $ | 3,396 |  |  |  | 3,020 |  |  |  | 4,863 |
State income taxes (net of Federal |  |  |  |  |  |  |  |  |  |  |  |
income tax benefit) |  |  | 504 |  |  |  | 520 |  |  |  | 622 |
Other, net |  |  | (5 | ) |  |  | 21 |  |  |  | 23 |
Provision for income taxes |  | $ | 3,895 |  |  |  | 3,561 |  |  |  | 5,508 |
Temporary differences |
|  |  | 2015 |  |  |  | 2014 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Property and equipment |  | $ | 13,100 |  |  |  | 12,120 |
Depletion |  |  | 496 |  |  |  | 477 |
Unrealized rents |  |  | 1,881 |  |  |  | 1,850 |
Prepaid expenses |  |  | 278 |  |  |  | 314 |
Gross deferred tax liabilities |  |  | 15,755 |  |  |  | 14,761 |
Deferred tax assets: |  |  |  |  |  |  |  |
Employee benefits and other |  |  | 1,214 |  |  |  | 1,792 |
Gross deferred tax assets |  |  | 1,214 |  |  |  | 1,792 |
Net deferred tax liability |  | $ | 14,541 |  |  |  | 12,969 |
Unrecognized tax benefits |
|  |  | 2015 |  |  |  | 2014 |
Balance at October 1 |  | $ | — |  |  |  | — |
Reductions due to lapse of statute of limitations |  |  | — |  |  |  | — |
Balance at September 30 |  | $ | — |  |  |  | — |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=51663037&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Tabular disclosure of deferred tax liabilities not recognized because of the exceptions to comprehensive recognition of deferred taxes, including a description of the temporary differences, events that would cause the temporary differences to become taxable, the cumulative amounts of the temporary differences and the amounts not recognized as deferred tax liabilities or a statement that the determination of the deferred tax liabilities is not practicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 740 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6487024&loc=d3e29054-158556 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51675352&loc=d3e28200-109314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 + Details
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