Long-term Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Long-term obligations (less current portion)
Finance lease obligations	$ 7,384	$ 7,613
Environmental post-closure monitoring and maintenance activities	407	566
Long-term disability	210	231
Deferred dividends	199	210
Less amounts due within one year	(352)	(319)
Long-term obligations (less current portion)	$ 7,848	$ 8,301
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Long-term obligations (less current portion)	Long-term obligations (less current portion)

Represents the amount of accrued deferred dividends.

No definition available.

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- Definition

Represents the current portion accrued as of the balance sheet date of both the total costs for environmental loss contingencies and the present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

No definition available.

+ Details

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- Definition

Represents the noncurrent portion accrued as of the balance sheet date of both the total costs for environmental loss contingencies and the present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

No definition available.

+ Details

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- Definition

Present value of minimum lease payments for finance leases included in capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

No definition available.

+ Details

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- Definition

The amount of Long-term disability.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 10
-Subparagraph (d)(3)
-URI https://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.Y.Q1)
-URI https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 10
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-URI https://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 55
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-URI https://asc.fasb.org/extlink&oid=6571209&loc=d3e13703-110860

+ Details

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- Definition

Indicates line item in statement of financial position that includes accrual for environmental loss contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.Y.Q4)
-URI https://asc.fasb.org/extlink&oid=27011672&loc=d3e149879-122751

+ Details

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