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Represents the number of letters of credit issued and outstanding.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Debt (Details)	May 02, 2024 USD ($)	Mar. 31, 2024 USD ($) item	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)
DEBT
Deposit		$ 5,000,000	$ 5,000,000
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Long-term Debt and Capital Lease Obligations, Long-term Debt and Capital Lease Obligations, Current
Finance lease		$ 2,105,000
Dominion Loan Agreement
DEBT
Maximum borrowing capacity				$ 5,000,000
Deposit				$ 5,000,000
Available for withdrawal		$ 5,000,000
Dominion Loan Agreement \| Subsequent Events
DEBT
Collateral deposit released	$ 5,000,000
Dominion Letters of Credit
DEBT
Number of letters of credit \| item		1
Amount of letter of credit		$ 265,000
Notes payable to finance companies for insurance
DEBT
Number of notes payable \| item		1
Aggregate principal amount outstanding		$ 526,000	$ 910,000