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Leases - Supplemental cash flow information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 177	$ 182	$ 553	$ 561
Operating cash flows from short-term leases	23	10	36	29
Operating cash flows from finance leases	2	6	10	25
Financing cash flows from finance leases	89	91	262	248
Operating leases		212		216
Cash received from subleases	$ 113	$ 113	$ 338	$ 338

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Amount of interest paid on finance lease liability.

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