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Fair Value of Financial Instruments - Reconciliation of Liabilities Measured at Fair Value Using Significant Unobservable Inputs Level 3 (Parenthetical) (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Sep. 30, 2021
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Long-Term Credit Facility |  |  |  |
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |  |  |  |
Cost | $ 64,400 | $ 169,654 | $ 259,277 | $ 219,400

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- Definition Fair value measurement with unobservable inputs reconciliations recurring basis liability value at cost. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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