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Leases - Supplemental cash flow information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 187	$ 191
Operating cash flows from short-term leases	12	10
Operating cash flows from finance leases	1	5
Financing cash flows from finance leases	11	86
Cash received from subleases	$ 18	$ 113

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- Definition

Amount of interest paid on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
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Amount of cash outflow for principal payment on finance lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977

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Amount of cash inflow from lease payment, classified as operating activity.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-SubTopic 30
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Amount of cash outflow for short-term lease payment excluded from lease liability.

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