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Short-Term Borrowings and Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Sep. 30, 2022
--- | --- | ---
Debt Instrument [Line Items] |  |
Less: current portion | $ (32,409) | $ (2,882)
Less: unamortized portion of debt issuance costs | (1,680) | (510)
Long-term debt, net current portion and unamortized debt issuance costs | 407,335 | 45,301
Mortgage Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 441,424 | 48,693
Mortgage Facility [Member] | Mortgage Facility Payable to Flagship Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 6,155 | 6,403
Mortgage Facility [Member] | Mortgage Facility Payable to Seacoast National Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 17,060 | 17,098
Mortgage Facility [Member] | Mortgage facility payable to Hancock Whitney Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 24,236 | $ 25,192
Term Loan [Member] | Term loan payable to M&T Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 392,500 |
Term Loan [Member] | Loan payable to TRANSPORT S.a.s di Taula Vittorio and C. [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 1,473 |

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