Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Debt Instrument [Line Items]
Finance lease obligations	$ 94
Unamortized debt issuance costs	(23)	$ (25)
Total debt	22,474	23,380
Less – current maturities	(17,984)	(21,328)
Total long-term debt	4,490	2,052
Finance lease obligations
Debt Instrument [Line Items]
Finance lease obligations		138
Other, net of unamortized debt issuance costs ($23) and ($25), respectively
Debt Instrument [Line Items]
Long-term debt, gross	5,919	1,108
Revolving credit agreement \| Revolving credit agreement
Debt Instrument [Line Items]
Long-term debt, gross	11,302	15,542
Foreign subsidiary borrowings
Debt Instrument [Line Items]
Long-term debt, gross	$ 5,159	$ 6,592

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of short-term and long-term debt and lease obligation.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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