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Leases - Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash paid for leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 2,998	$ 2,707
Right Of Use Asset Obtained In Exchange for Lease Liability [Abstract]
Right-of-use assets obtained in exchange for new operating lease liabilities	2,615	3,785
Leasehold Improvements, Gross	$ 0	$ 1,000
Weighted average remaining lease term [Abstract]
Weighted average remaining lease term- operating leases	7 years 2 months 12 days
Weighted Average Discount Rate Leases [Abstract]
Weighted average discount rate - operating leases	2.86%

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Cash paid for leases [Abstract]

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Right Of Use Asset Obtained In Exchange for Lease Liability [Abstract]

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Weighted Average Discount Rate Leases [Abstract]

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Weighted Average Remaining Lease Term [Abstract]

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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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.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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