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Debt - Schedule of Long-term Debt Obligations (Parenthetical) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |
Unamortized Debt Issuance Expense | [1] | $ 4,053 | $ 6,215
Long term debt |  | $ 521,467 | 9,375
Line of Credit |  |  |
Debt Instrument [Line Items] |  |  |
Credit facility maturity date |  | Jan. 03, 2028 |
Secured Debt |  |  |
Debt Instrument [Line Items] |  |  |
Long term debt maturity repayments year one |  | $ 21,900 |
Long term debt maturity repayments year two |  | 25,000 |
Long term debt maturity repayments year three |  | 25,000 |
Long term debt maturity repayments year four |  | 418,700 |
Long term debt |  | 21,900 | 9,400
Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Long term debt |  | 499,600 |
Other Current Assets | Line of Credit |  |  |
Debt Instrument [Line Items] |  |  |
Unamortized Debt Issuance Expense |  | 2,300 | 2,300
Other Noncurrent Assets | Line of Credit |  |  |
Debt Instrument [Line Items] |  |  |
Unamortized Debt Issuance Expense |  | 5,200 | $ 7,500
Current portion of long-term debt | Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Unamortized Debt Issuance Expense |  | 400 |
Long-term Debt |  |  |
Debt Instrument [Line Items] |  |  |
Unamortized Debt Issuance Expense |  | $ 3,600 |
[1] | Of the unamortized debt issuance costs for the Senior Note s, $0.4 million was included in Current portion of long-term debt and $3.6 million was included in Long-term debt on the Consolidated Balance Sheet as of September 30, 2024. As of September 30, 2023, all unamortized debt issuance costs for the Senior Notes were included in Long-term debt on the Consolidated Balance Sheets.

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