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Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Sep. 30, 2020
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Accounts Payable And Accrued Liabilities Current [Line Items] |  |
Accrued expenses | $ 86,594 | $ 51,616
Payroll Accruals [Member] |  |
Accounts Payable And Accrued Liabilities Current [Line Items] |  |
Accrued expenses | 42,138 | 23,142
Customer and Storage Accruals [Member] |  |
Accounts Payable And Accrued Liabilities Current [Line Items] |  |
Accrued expenses | 17,390 | 11,381
Sales and Other Taxes Payable [Member] |  |
Accounts Payable And Accrued Liabilities Current [Line Items] |  |
Accrued expenses | 8,462 | 5,829
Other Accruals [Member] |  |
Accounts Payable And Accrued Liabilities Current [Line Items] |  |
Accrued expenses | $ 18,604 | $ 11,264

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- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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