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Leases - Components of lease costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating Lease:
Total lease costs	$ 776	$ 777
Total lease costs, net of sublease interest income	756	694
Interest expense
Finance Lease:
Interest on lease liabilities	11	30
Selling, general, and administrative
Operating Lease:
Operating lease cost	718	735
Short-term Lease, Cost	47	12
Revenue
Operating Lease:
Less sublease interest income	$ (20)	$ (83)

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- References

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- Definition

Amount of lease cost recognized by lessee for lease contract before netting of sublease income.

+ References

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- Definition

Amount of interest expense on finance lease liability.

+ References

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Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Amount of sublease income excluding finance and operating lease expense.

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