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Long-Term Debt and Bank Facility Borrowings - Company's Debt (Detail) - USD ($) $ in Thousands | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Long-term debt, carrying Amount |  | $ 164,928 | $ 148,067
Current maturities of long-term debt, carrying Amount |  | 45,739 | 20,740
Long-term debt | [1] | 119,189 | 127,327
Long-term debt, fair value | [2] | 165,489 | 148,740
Current maturities of long-term debt, fair value | [2] | 45,739 | 20,740
Long-term portion of debt, fair value | [1],[2] | 119,750 | 128,000
Revolving Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Credit facility borrowings, carrying Amount |  | 29,239 | 240
Credit facility borrowings, fair value | [2] | 29,239 | 240
Term Loan |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt, carrying Amount | [1] | 135,689 | 147,827
Long-term debt, fair value | [1],[2] | $ 136,250 | $ 148,500
[1] | Carrying amounts are net of unamortized debt issuance costs of $0.6 million as of March 31, 2024 and $0.7 million as of September 30, 2023
[2] | The face amount of the Company’s variable rate long-term debt approximates fair value.

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