Long-term Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Long-term obligations (less current portion)
Finance lease obligations	$ 7,502	$ 7,613
Environmental post-closure monitoring and maintenance activities	566	566
Long-term disability	220	231
Deferred dividends	161	210
Less amounts due within one year	(338)	(319)
Long-term obligations (less current portion)	$ 8,111	$ 8,301

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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