Leases (Details) - USD ($)	3 Months Ended	6 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021
Leases [Abstract]
Operating Lease, Liability, Current	$ 14,877,000		$ 14,877,000		$ 13,973,000
Finance Lease, Liability, Current	1,546,000		1,546,000		$ 1,033,000
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	11,726,000		11,726,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	11,918,000		11,918,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	8,683,000		8,683,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	6,052,000		6,052,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	3,945,000		3,945,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	4,482,000		4,482,000
Lessee, Operating Lease, Liability, Payments, Due	46,806,000		46,806,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	3,559,000		3,559,000
Operating Lease, Liability	43,247,000		43,247,000
Finance Lease, Liability, Payments, Due Next Twelve Months	1,187,000		1,187,000
Finance Lease, Liability, Payments, Due Year Two	1,576,000		1,576,000
Finance Lease, Liability, Payments, Due Year Three	1,541,000		1,541,000
Finance Lease, Liability, Payments, Due Year Four	1,256,000		1,256,000
Finance Lease, Liability, Payments, Due Year Five	643,000		643,000
Finance Lease, Liability, Payments, Due after Year Five	240,000		240,000
Finance Lease, Liability, Payment, Due	6,443,000		6,443,000
Finance Lease, Liability, Undiscounted Excess Amount	540,000		540,000
Finance Lease, Liability	5,903,000		5,903,000
Lessee, Total Lease, Liability, Payments, Remainder of Fiscal Year [Line Items]	12,913,000		12,913,000
Total Lease, Liability, Payments, Year Two	13,494,000		13,494,000
Total Lease, Liability, Payments, Year Three	10,224,000		10,224,000
Total Lease, Liability, Payments, Year Four	7,308,000		7,308,000
Total Lease, Liability, Payments, Year Five	4,588,000		4,588,000
Total Lease, Liability, Payments, Due After Year Five	4,722,000		4,722,000
Total Lease, Liability, Payments Due	53,249,000		53,249,000
Total Lease, Liability, Undiscounted Excess Amount	4,099,000		4,099,000
Total Lease, Liability	49,150,000		49,150,000
Lessee, Operating Lease, Lease Not yet Commenced, Description	2,346,000		2,346,000
Operating Lease, Cost	4,157,000	$ 3,804,000	8,160,000	$ 7,049,000
Finance Lease, Right-of-Use Asset, Amortization	332,000	133,000	603,000	242,000
Finance Lease, Interest Expense	56,000	26,000	104,000	48,000
Finance Lease, Cost	388,000	159,000	707,000	290,000
Short-term Lease, Cost	491,000	237,000	776,000	550,000
Variable Lease, Cost	485,000	343,000	957,000	634,000
Lease, Cost	5,521,000	4,543,000	10,600,000	8,523,000
Operating Lease, Payments	5,111,000	3,654,000	9,351,000	7,649,000
Finance Lease, Interest Payment on Liability	56,000	0	104,000	48,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	3,984,000	6,247,000	11,499,000	14,861,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 1,328,000	$ 396,000	$ 2,582,000	$ 960,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 3 months 18 days		4 years 3 months 18 days		5 years
Finance Lease, Weighted Average Remaining Lease Term	4 years 3 months 18 days		4 years 3 months 18 days		4 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	3.40%		3.40%		3.70%
Finance Lease, Weighted Average Discount Rate, Percent	4.10%		4.10%		4.30%

Finance Lease, Cost

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Lessee, Total Lease, Liability, Payments, Remainder of Fiscal Year

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Operating Leases not yet Commenced

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Total Lease, Liability

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Total Lease, Liability, Payment, Due

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Total Lease, Liability, Payments, Due After Year Five

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Total Lease, Liability, Payments, Year Four

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Total Lease, Liability, Payments, Year Three

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Total Lease, Liability, Undiscounted Excess Amount

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Amount of interest expense on finance lease liability.

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Amount of interest paid on finance lease liability.

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

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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

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

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Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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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 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 finance lease liability.

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Amount of increase in right-of-use asset obtained in exchange for operating 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 variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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