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Leases (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Oct. 01, 2019
Leases [Abstract] |  |  |  |
Current operating lease liabilities | $ 13,973 | $ 11,056 |  |
Current finance lease liabilities | 1,033 |  |  |
Lessee, Operating Lease, Liability, Payments, Due Year One | 3,840 |  |  |
Lessee, Operating Lease, Liability, Payments, Due Year Two | 13,481 |  |  |
Lessee, Operating Lease, Liability, Payments, Due Year Three | 9,466 |  |  |
Lessee, Operating Lease, Liability, Payments, Due Year Four | 6,430 |  |  |
Lessee, Operating Lease, Liability, Payments, Due Year Five | 4,632 |  |  |
Lessee, Operating Lease, Liability, Payments, Due after Year Five | 9,411 |  |  |
Lessee, Operating Lease, Liability, Payments, Due | 47,260 |  |  |
Lessee, Operating Lease, Liability, Undiscounted Excess Amount | 4,637 |  |  |
Operating Lease, Liability | 42,623 |  |  | $ 32,237
Finance Lease, Liability, Payments, Due Year One | 266 |  |  |
Finance Lease, Liability, Payments, Due Year Two | 1,055 |  |  |
Finance Lease, Liability, Payments, Due Year Three | 1,043 |  |  |
Finance Lease, Liability, Payments, Due Year Four | 999 |  |  |
Finance Lease, Liability, Payments, Due Year Five | 715 |  |  |
Finance Lease, Liability, Payments, Due after Year Five | 181 |  |  |
Finance Lease, Liability, Payment, Due | 4,259 |  |  |
Finance Lease, Liability, Undiscounted Excess Amount | 354 |  |  |
Finance Lease, Liability | 3,905 |  |  |
Lessee, Total Lease, Liability, Payments, Due Year One | 4,106 |  |  |
Total Lease, Liability, Payments, Year Two | 14,536 |  |  |
Total Lease, Liability, Payments, Year Three | 10,509 |  |  |
Total Lease, Liability, Payments, Year Four | 7,429 |  |  |
Total Lease, Liability, Payments, Year Five | 5,347 |  |  |
Total Lease, Liability, Payments, Due After Year Five | 9,592 |  |  |
Total Lease, Liability, Payments Due | 51,519 |  |  |
Total Lease, Liability, Undiscounted Excess Amount | 4,991 |  |  |
Total Lease, Liability | 46,528 |  |  |
Minimum payments for leases not yet commenced | 7,296 |  |  |
Operating Lease, Cost | 13,405 | 12,910 |  |
Finance Lease, Right-of-Use Asset, Amortization | 634 | 203 |  |
Finance Lease, Interest Expense | 119 | 47 |  |
Finance Lease, Cost | 753 | 250 |  |
Short-term Lease, Cost | 1,575 | 1,163 |  |
Variable Lease, Cost | 1,286 | 827 |  |
Lease, Cost | 17,019 | 15,150 |  |
Operating Lease, Payments | 15,011 | 12,934 |  |
Finance Lease, Interest Payment on Liability | 119 | 47 |  |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 24,606 | 10,640 |  |
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | $ 2,962 | $ 1,803 |  |
Operating Lease, Weighted Average Remaining Lease Term | 5 years | 4 years 3 months 18 days |  |
Finance Lease, Weighted Average Remaining Lease Term | 4 years 2 months 12 days | 4 years 4 months 24 days |  |
Operating Lease, Weighted Average Discount Rate, Percent | 3.70% | 3.90% |  |
Finance Lease, Weighted Average Discount Rate, Percent | 4.30% | 5.10% |  |
Operating Leases, Rent Expense |  |  | $ 10,553 |
Payments for Rent | $ 14,980 | $ 14,073 |  |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accounts payable and accrued expenses | Accounts payable and accrued expenses |  |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accounts payable and accrued expenses | Accounts payable and accrued expenses |  |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other non-current liabilities | Other non-current liabilities |  |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other non-current assets | Other non-current assets |  |

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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Indicates line item in statement of financial position that includes current operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918631-209977 + Details
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- Definition 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=123391704&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Cash payments to lessor's for use of assets under operating leases. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 + Details
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- Definition Amount of short-term lease cost, excluding expense for lease with term of one month or less. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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