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Short-Term Borrowings and Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Sep. 30, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt | $ 48,693 |
Less: current portion | (2,882) | $ (3,587)
Less: unamortized portion of debt issuance costs | (510) | (595)
Long-term debt, net current portion and unamortized debt issuance costs | 45,301 | 47,498
Mortgage Facility [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 48,693 | 51,680
Mortgage Facility [Member] | Mortgage Facility Payable to Flagship Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 6,403 | 6,899
Mortgage Facility [Member] | Mortgage Facility Payable to Seacoast National Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | 17,098 | 17,675
Mortgage Facility [Member] | Mortgage facility payable to Hancock Whitney Bank [Member] |  |
Debt Instrument [Line Items] |  |
Long-term debt | $ 25,192 | $ 27,106

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